Faster access than browser!
155 relations: Adaptive radiation, Alfred Romer, Allantois, Amnion, Amniotic sac, Amphibian, Anamniotes, Anapsid, Ankle, Araeoscelidia, Archaeopteryx, Archaeornithes, Archaeothyris, Archosaur, Archosauromorpha, Avemetatarsalia, Basal (phylogenetics), Bird, Blastoderm, Brachystelechidae, Captorhinida, Captorhinidae, Carboniferous, Caseasauria, Casineria, Chorion, Clade, Cladistics, Cladogenesis, Class (biology), Crocodilia, Crocodylomorpha, Crown group, Crurotarsi, Cuticle, Diapsid, Dinosaur, Ecological niche, Edwin H. Colbert, Egg, Egg white, Eggshell, Embryogenesis, Enantiornithes, Epithelium, Ernst Haeckel, Eupelycosauria, Eureptilia, Euryapsida, Eutheria, ..., Evolution of the Vertebrates, Extinction, Extraembryonic membrane, Fetus, Fish, Food chain, Fossil, Geological period, Gymnarthridae, Hesperornithes, Holocene, Ichthyornithes, Ichthyosaur, Infratemporal fenestra, Internal fertilization, Invertebrate, Jacques Gauthier, Journal of the Geological Society, Keratin, Kidney, Labyrinthodontia, Large intestine, Larva, Late Devonian extinction, Late Jurassic, Lepidosauria, Lepidosauromorpha, Limb (anatomy), Lizard, Lysorophia, Mammal, Marsupial, Mesosaur, Mesozoic, Metatheria, Michael Benton, Millerettidae, Mississippian (geology), Molecular phylogenetics, Monotreme, Neontology, Nothosaur, Ornithischia, Ostodolepidae, Otic notch, Ovoviviparity, Paleothyris, Paraphyly, Parareptilia, Pareiasaur, Pelycosaur, Pennsylvanian (geology), Phylogenetic tree, Phylogenetics, Physiology, Phytosaur, Placenta, Placodont, Plesiosauria, Procolophonoidea, Procolophonomorpha, Protoclepsydrops, Protorosauria, Protorothyrididae, Pterosaur, Rauisuchia, Reptile, Reptiliomorpha, Respiration (physiology), Rhynchocephalia, Rhynchonkos, Rhynchosaur, Rib, Robert L. Carroll, Romer's gap, Romeriida, Sacrum, Saurischia, Sauropsida, Sauropterygia, Shoulder girdle, Skull, Skull roof, Snake, Spiracle, Squamata, Sternum, Synapomorphy and apomorphy, Synapsid, Tadpole, Talus bone, Terrapin, Tetrapod, Therapsid, Theria, Theropoda, Thyroid hormones, Tortoise, Trophic level, Tuatara, Turtle, Vertebrate, Vitelline membrane, Westlothiana, Younginiformes. Expand index (105 more) »
Adaptive radiation
In evolutionary biology, adaptive radiation is a process in which organisms diversify rapidly from an ancestral species into a multitude of new forms, particularly when a change in the environment makes new resources available, creates new challenges, or opens new environmental niches.
New!!: Amniote and Adaptive radiation · See more »
Alfred Romer
Alfred Sherwood Romer (December 28, 1894 – November 5, 1973) was an American paleontologist and biologist and a specialist in vertebrate evolution.
New!!: Amniote and Alfred Romer · See more »
Allantois
The allantois (plural allantoides or allantoises) is a hollow sac-like structure filled with clear fluid that forms part of a developing amniote's conceptus (which consists of all embryonic and extra-embryonic tissues).
New!!: Amniote and Allantois · See more »
Amnion
The amnion is a membrane that closely covers the embryo when first formed.
New!!: Amniote and Amnion · See more »
Amniotic sac
The amniotic sac, commonly called the bag of waters, sometimes the membranes, is the sac in which the fetus develops in amniotes.
New!!: Amniote and Amniotic sac · See more »
Amphibian
Amphibians are ectothermic, tetrapod vertebrates of the class Amphibia.
New!!: Amniote and Amphibian · See more »
Anamniotes
The anamniotes are an informal group comprising the fishes and the amphibians, the so-called "lower vertebrates", which lay their eggs in water.
New!!: Amniote and Anamniotes · See more »
Anapsid
An anapsid is an amniote whose skull does not have openings near the temples.
New!!: Amniote and Anapsid · See more »
Ankle
The ankle, or the talocrural region, is the region where the foot and the leg meet.
New!!: Amniote and Ankle · See more »
Araeoscelidia
Araeoscelidia or Araeoscelida is a clade of extinct diapsid reptiles superficially resembling lizards, extending from the Late Carboniferous to the Early Permian.
New!!: Amniote and Araeoscelidia · See more »
Archaeopteryx
Archaeopteryx, meaning "old wing" (sometimes referred to by its German name Urvogel ("original bird" or "first bird")), is a genus of bird-like dinosaurs that is transitional between non-avian feathered dinosaurs and modern birds.
New!!: Amniote and Archaeopteryx · See more »
Archaeornithes
The Archaeornithes, classically Archæornithes, is an extinct group of the first primitive, reptile-like birds.
New!!: Amniote and Archaeornithes · See more »
Archaeothyris
Archaeothyris is an extinct genus of ophiacodontid synapsids that lived during the Late Carboniferous and is known from Nova Scotia.
New!!: Amniote and Archaeothyris · See more »
Archosaur
Archosaurs are a group of diapsid amniotes whose living representatives consist of birds and crocodilians.
New!!: Amniote and Archosaur · See more »
Archosauromorpha
Archosauromorpha (Greek for "ruling lizard forms") is a clade (or infraclass) of diapsid reptiles that first appeared during the middle Permian and became more common during the Triassic.
New!!: Amniote and Archosauromorpha · See more »
Avemetatarsalia
Avemetatarsalia (meaning "bird metatarsals") is a clade name established by British palaeontologist Michael Benton in 1999 for all crown group archosaurs that are closer to birds than to crocodiles.
New!!: Amniote and Avemetatarsalia · See more »
Basal (phylogenetics)
In phylogenetics, basal is the direction of the base (or root) of a rooted phylogenetic tree or cladogram.
New!!: Amniote and Basal (phylogenetics) · See more »
Bird
Birds, also known as Aves, are a group of endothermic vertebrates, characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton.
New!!: Amniote and Bird · See more »
Blastoderm
A blastoderm (germinal disc, blastodisc) is a single layer of embryonic epithelial tissue that makes up the blastula.
New!!: Amniote and Blastoderm · See more »
Brachystelechidae
Brachystelechidae is an extinct family of Early Permian microsaurs.
New!!: Amniote and Brachystelechidae · See more »
Captorhinida
Labidosaurus hamatus'' Captorhinida (older name: Cotylosauria) is a doubly paraphyletic grouping of early reptiles.
New!!: Amniote and Captorhinida · See more »
Captorhinidae
Captorhinidae (also known as cotylosaurs) is one of the earliest and most basal reptile families, all members of which are extinct.
New!!: Amniote and Captorhinidae · See more »
Carboniferous
The Carboniferous is a geologic period and system that spans 60 million years from the end of the Devonian Period million years ago (Mya), to the beginning of the Permian Period, Mya.
New!!: Amniote and Carboniferous · See more »
Caseasauria
Caseasauria is one of the two main clades of early synapsids, the other being the Eupelycosauria.
New!!: Amniote and Caseasauria · See more »
Casineria
Casineria is an extinct genus of tetrapod which lived about 340 million years ago in the Mississippian epoch.
New!!: Amniote and Casineria · See more »
Chorion
The chorion is the outermost fetal membrane around the embryo in mammals, birds and reptiles.
New!!: Amniote and Chorion · See more »
Clade
A clade (from κλάδος, klados, "branch"), also known as monophyletic group, is a group of organisms that consists of a common ancestor and all its lineal descendants, and represents a single "branch" on the "tree of life".
New!!: Amniote and Clade · See more »
Cladistics
Cladistics (from Greek κλάδος, cládos, i.e., "branch") is an approach to biological classification in which organisms are categorized in groups ("clades") based on the most recent common ancestor.
New!!: Amniote and Cladistics · See more »
Cladogenesis
Cladogenesis is an evolutionary splitting event where a parent species splits into two distinct species, forming a clade.
New!!: Amniote and Cladogenesis · See more »
Class (biology)
In biological classification, class (classis) is a taxonomic rank, as well as a taxonomic unit, a taxon, in that rank.
New!!: Amniote and Class (biology) · See more »
Crocodilia
Crocodilia (or Crocodylia) is an order of mostly large, predatory, semiaquatic archosaurian reptiles, known as crocodilians.
New!!: Amniote and Crocodilia · See more »
Crocodylomorpha
Crocodylomorpha is a group of archosaurs that includes the crocodilians and their extinct relatives.
New!!: Amniote and Crocodylomorpha · See more »
Crown group
In phylogenetics, the crown group of a collection of species consists of the living representatives of the collection together with their ancestors back to their most recent common ancestor as well as all of that ancestor's descendants.
New!!: Amniote and Crown group · See more »
Crurotarsi
Crurotarsi is a group of archosauriform reptiles that includes the archosaurs (represented today by birds and crocodilians) and the extinct, crocodile-like phytosaurs.
New!!: Amniote and Crurotarsi · See more »
Cuticle
A cuticle, or cuticula, is any of a variety of tough but flexible, non-mineral outer coverings of an organism, or parts of an organism, that provide protection.
New!!: Amniote and Cuticle · See more »
Diapsid
Diapsids ("two arches") are a group of amniote tetrapods that developed two holes (temporal fenestra) in each side of their skulls about 300 million years ago during the late Carboniferous period.
New!!: Amniote and Diapsid · See more »
Dinosaur
Dinosaurs are a diverse group of reptiles of the clade Dinosauria.
New!!: Amniote and Dinosaur · See more »
Ecological niche
In ecology, a niche (CanE, or) is the fit of a species living under specific environmental conditions.
New!!: Amniote and Ecological niche · See more »
Edwin H. Colbert
Edwin Harris "Ned" Colbert (September 28, 1905 – November 15, 2001)O'Connor, Anahad,, The New York Times, November 25, 2001.
New!!: Amniote and Edwin H. Colbert · See more »
Egg
An egg is the organic vessel containing the zygote in which an animal embryo develops until it can survive on its own; at which point the animal hatches.
New!!: Amniote and Egg · See more »
Egg white
Egg white is the clear liquid (also called the albumen or the glair/glaire) contained within an egg.
New!!: Amniote and Egg white · See more »
Eggshell
An eggshell is the outer covering of a hard-shelled egg and of some forms of eggs with soft outer coats.
New!!: Amniote and Eggshell · See more »
Embryogenesis
Embryogenesis is the process by which the embryo forms and develops.
New!!: Amniote and Embryogenesis · See more »
Enantiornithes
Enantiornithes is a group of extinct avialans ("birds" in the broad sense), the most abundant and diverse group known from the Mesozoic era.
New!!: Amniote and Enantiornithes · See more »
Epithelium
Epithelium is one of the four basic types of animal tissue, along with connective tissue, muscle tissue and nervous tissue.
New!!: Amniote and Epithelium · See more »
Ernst Haeckel
Ernst Heinrich Philipp August Haeckel (16 February 1834 – 9 August 1919) was a German biologist, naturalist, philosopher, physician, professor, marine biologist, and artist who discovered, described and named thousands of new species, mapped a genealogical tree relating all life forms, and coined many terms in biology, including anthropogeny, ecology, phylum, phylogeny, and Protista. Haeckel promoted and popularised Charles Darwin's work in Germany and developed the influential but no longer widely held recapitulation theory ("ontogeny recapitulates phylogeny") claiming that an individual organism's biological development, or ontogeny, parallels and summarises its species' evolutionary development, or phylogeny.
New!!: Amniote and Ernst Haeckel · See more »
Eupelycosauria
The Eupelycosauria originally referred to a suborder of 'pelycosaurs' (Reisz 1987), but has been redefined (Laurin and Reisz 1997) to designate a clade of synapsids that includes most pelycosaurs, as well as all therapsids and mammals.
New!!: Amniote and Eupelycosauria · See more »
Eureptilia
Eureptilia ("true reptiles") is one of the two major clades of the Sauropsida, the other being Parareptilia.
New!!: Amniote and Eureptilia · See more »
Euryapsida
Euryapsida is a polyphyletic (unnatural, as the various members are not closely related) group of reptiles that are distinguished by a single temporal fossa, an opening behind the orbit, under which the post-orbital and squamosal bones articulate.
New!!: Amniote and Euryapsida · See more »
Eutheria
Eutheria (from Greek εὐ-, eu- "good" or "right" and θηρίον, thēríon "beast" hence "true beasts") is one of two mammalian clades with extant members that diverged in the Early Cretaceous or perhaps the Late Jurassic.
New!!: Amniote and Eutheria · See more »
Evolution of the Vertebrates
Evolution of the Vertebrates, subtitled "A History of the Backboned Animals Through Time" is a basic paleontology textbook by Edwin H. Colbert, published by John Wiley & Sons.
New!!: Amniote and Evolution of the Vertebrates · See more »
Extinction
In biology, extinction is the termination of an organism or of a group of organisms (taxon), normally a species.
New!!: Amniote and Extinction · See more »
Extraembryonic membrane
An extraembryonic membrane is one of the membranes which assist in the development of the embryo.
New!!: Amniote and Extraembryonic membrane · See more »
Fetus
A fetus is a stage in the prenatal development of viviparous organisms.
New!!: Amniote and Fetus · See more »
Fish
Fish are gill-bearing aquatic craniate animals that lack limbs with digits.
New!!: Amniote and Fish · See more »
Food chain
A food chain is a linear network of links in a food web starting from producer organisms (such as grass or trees which use radiation from the Sun to make their food) and ending at apex predator species (like grizzly bears or killer whales), detritivores (like earthworms or woodlice), or decomposer species (such as fungi or bacteria).
New!!: Amniote and Food chain · See more »
Fossil
A fossil (from Classical Latin fossilis; literally, "obtained by digging") is any preserved remains, impression, or trace of any once-living thing from a past geological age.
New!!: Amniote and Fossil · See more »
Geological period
A geological period is one of several subdivisions of geologic time enabling cross-referencing of rocks and geologic events from place to place.
New!!: Amniote and Geological period · See more »
Gymnarthridae
Gymnarthridae is an extinct family of tuditanomorph microsaurs.
New!!: Amniote and Gymnarthridae · See more »
Hesperornithes
Hesperornithes is an extinct and highly specialized group of aquatic avialans closely related to the ancestors of modern birds.
New!!: Amniote and Hesperornithes · See more »
Holocene
The Holocene is the current geological epoch.
New!!: Amniote and Holocene · See more »
Ichthyornithes
Ichthyornithes is an extinct group of toothed avialans very closely related to the common ancestor of all modern birds.
New!!: Amniote and Ichthyornithes · See more »
Ichthyosaur
Ichthyosaurs (Greek for "fish lizard" – ιχθυς or ichthys meaning "fish" and σαυρος or sauros meaning "lizard") are large marine reptiles.
New!!: Amniote and Ichthyosaur · See more »
Infratemporal fenestra
An infratemporal fenestra, also called the lateral temporal fenestra is an opening in the skull behind the orbit in some animals.
New!!: Amniote and Infratemporal fenestra · See more »
Internal fertilization
Internal fertilization is the union of an egg cell with a sperm during sexual reproduction inside the body of a parent.
New!!: Amniote and Internal fertilization · See more »
Invertebrate
Invertebrates are animals that neither possess nor develop a vertebral column (commonly known as a backbone or spine), derived from the notochord.
New!!: Amniote and Invertebrate · See more »
Jacques Gauthier
Jacques Armand Gauthier (born June 7, 1948 in New York City) is an American vertebrate paleontologist, comparative morphologist, and systematist, and one of the founders of the use of cladistics in biology.
New!!: Amniote and Jacques Gauthier · See more »
Journal of the Geological Society
The Journal of the Geological Society is a peer-reviewed scientific journal which covers research in all aspects of the Earth sciences.
New!!: Amniote and Journal of the Geological Society · See more »
Keratin
Keratin is one of a family of fibrous structural proteins.
New!!: Amniote and Keratin · See more »
Kidney
The kidneys are two bean-shaped organs present in left and right sides of the body in vertebrates.
New!!: Amniote and Kidney · See more »
Labyrinthodontia
Labyrinthodontia (Greek, "maze-toothed") is an extinct amphibian subclass, which constituted some of the dominant animals of late Paleozoic and early Mesozoic eras (about 390 to 150 million years ago).
New!!: Amniote and Labyrinthodontia · See more »
Large intestine
The large intestine, also known as the large bowel or colon, is the last part of the gastrointestinal tract and of the digestive system in vertebrates.
New!!: Amniote and Large intestine · See more »
Larva
A larva (plural: larvae) is a distinct juvenile form many animals undergo before metamorphosis into adults.
New!!: Amniote and Larva · See more »
Late Devonian extinction
The Late Devonian extinction was one of five major extinction events in the history of the Earth's biota.
New!!: Amniote and Late Devonian extinction · See more »
Late Jurassic
The Late Jurassic is the third epoch of the Jurassic period, and it spans the geologic time from 163.5 ± 1.0 to 145.0 ± 0.8 million years ago (Ma), which is preserved in Upper Jurassic strata.
New!!: Amniote and Late Jurassic · See more »
Lepidosauria
The Lepidosauria (from Greek meaning scaled lizards) are reptiles with overlapping scales.
New!!: Amniote and Lepidosauria · See more »
Lepidosauromorpha
Lepidosauromorpha is a group of reptiles comprising all diapsids closer to lizards than to archosaurs (which include crocodiles and birds).
New!!: Amniote and Lepidosauromorpha · See more »
Limb (anatomy)
A limb (from the Old English lim), or extremity, is a jointed, or prehensile (as octopus arms or new world monkey tails), appendage of the human or other animal body.
New!!: Amniote and Limb (anatomy) · See more »
Lizard
Lizards are a widespread group of squamate reptiles, with over 6,000 species, ranging across all continents except Antarctica, as well as most oceanic island chains.
New!!: Amniote and Lizard · See more »
Lysorophia
Lysorophia is an order of aquatic Carboniferous and Permian amphibians within the extinct subclass Lepospondyli.
New!!: Amniote and Lysorophia · See more »
Mammal
Mammals are the vertebrates within the class Mammalia (from Latin mamma "breast"), a clade of endothermic amniotes distinguished from reptiles (including birds) by the possession of a neocortex (a region of the brain), hair, three middle ear bones, and mammary glands.
New!!: Amniote and Mammal · See more »
Marsupial
Marsupials are any members of the mammalian infraclass Marsupialia.
New!!: Amniote and Marsupial · See more »
Mesosaur
Mesosaurs ("middle lizards") were a group of small aquatic reptiles that lived during the early Permian period, roughly 299 to 270 million years ago.
New!!: Amniote and Mesosaur · See more »
Mesozoic
The Mesozoic Era is an interval of geological time from about.
New!!: Amniote and Mesozoic · See more »
Metatheria
Metatheria is a mammalian clade that includes all mammals more closely related to marsupials than to placentals.
New!!: Amniote and Metatheria · See more »
Michael Benton
Michael James "Mike" Benton FRS (born 8 April 1956) is a British palaeontologist, and professor of vertebrate palaeontology in the School of Earth Sciences at the University of Bristol.
New!!: Amniote and Michael Benton · See more »
Millerettidae
Millerettidae is an extinct family of parareptiles from the Middle Permian to the Late Permian period (Capitanian - Changhsingian stages) of South Africa.
New!!: Amniote and Millerettidae · See more »
Mississippian (geology)
The Mississippian (also known as Lower Carboniferous or Early Carboniferous) is a subperiod in the geologic timescale or a subsystem of the geologic record.
New!!: Amniote and Mississippian (geology) · See more »
Molecular phylogenetics
Molecular phylogenetics is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominately in DNA sequences, to gain information on an organism's evolutionary relationships.
New!!: Amniote and Molecular phylogenetics · See more »
Monotreme
Monotremes are one of the three main groups of living mammals, along with placentals (Eutheria) and marsupials (Metatheria).
New!!: Amniote and Monotreme · See more »
Neontology
Neontology is a part of biology that, in contrast to paleontology, deals with living (or, more generally, recent) organisms.
New!!: Amniote and Neontology · See more »
Nothosaur
Nothosaurs (order Nothosauroidea) were Triassic marine sauropterygian reptiles that may have lived like seals of today, catching food in water but coming ashore on rocks and beaches.
New!!: Amniote and Nothosaur · See more »
Ornithischia
Ornithischia is an extinct clade of mainly herbivorous dinosaurs characterized by a pelvic structure similar to that of birds.
New!!: Amniote and Ornithischia · See more »
Ostodolepidae
Ostodolepidae is an extinct family of tuditanomorph microsaurs.
New!!: Amniote and Ostodolepidae · See more »
Otic notch
Otic notches are invaginations in the posterior margin of the skull roof, one behind each orbit.
New!!: Amniote and Otic notch · See more »
Ovoviviparity
Ovoviviparity, ovovivipary, or ovivipary, is a mode of reproduction in animals in which embryos that develop inside eggs remain in the mother's body until they are ready to hatch.
New!!: Amniote and Ovoviviparity · See more »
Paleothyris
Paleothyris was a small, agile, anapsid romeriidan reptile which lived in the Middle Pennsylvanian epoch in Nova Scotia (approximately 312 to 304 million years ago).
New!!: Amniote and Paleothyris · See more »
Paraphyly
In taxonomy, a group is paraphyletic if it consists of the group's last common ancestor and all descendants of that ancestor excluding a few—typically only one or two—monophyletic subgroups.
New!!: Amniote and Paraphyly · See more »
Parareptilia
Parareptilia ("at the side of reptiles") is a subclass or clade of reptiles which is variously defined as an extinct group of primitive anapsids, or a more cladistically correct alternative to Anapsida.
New!!: Amniote and Parareptilia · See more »
Pareiasaur
Pareiasaurs (meaning "cheek lizards") are an extinct group of anapsid reptiles classified in the family Pareiasauridae.
New!!: Amniote and Pareiasaur · See more »
Pelycosaur
The pelycosaurs (from Greek πέλυξ pelyx 'wooden bowl' or 'axe' and σαῦρος sauros 'lizard') are an informal grouping (previously considered an order) composed of basal or primitive Late Paleozoic synapsids, sometimes erroneously referred to as "mammal-like reptiles".
New!!: Amniote and Pelycosaur · See more »
Pennsylvanian (geology)
The Pennsylvanian (also known as Upper Carboniferous or Late Carboniferous) is, in the ICS geologic timescale, the younger of two subperiods (or upper of two subsystems) of the Carboniferous Period.
New!!: Amniote and Pennsylvanian (geology) · See more »
Phylogenetic tree
A phylogenetic tree or evolutionary tree is a branching diagram or "tree" showing the evolutionary relationships among various biological species or other entities—their phylogeny—based upon similarities and differences in their physical or genetic characteristics.
New!!: Amniote and Phylogenetic tree · See more »
Phylogenetics
In biology, phylogenetics (Greek: φυλή, φῦλον – phylé, phylon.
New!!: Amniote and Phylogenetics · See more »
Physiology
Physiology is the scientific study of normal mechanisms, and their interactions, which work within a living system.
New!!: Amniote and Physiology · See more »
Phytosaur
Phytosaurs are an extinct group of large, mostly semiaquatic Late Triassic archosauriform reptiles.
New!!: Amniote and Phytosaur · See more »
Placenta
The placenta is an organ that connects the developing fetus to the uterine wall to allow nutrient uptake, thermo-regulation, waste elimination, and gas exchange via the mother's blood supply; to fight against internal infection; and to produce hormones which support pregnancy.
New!!: Amniote and Placenta · See more »
Placodont
Placodonts ("Tablet teeth") is an extinct order of marine reptiles that lived during the Triassic period, becoming extinct at the end of the period.
New!!: Amniote and Placodont · See more »
Plesiosauria
Plesiosauria (Greek: πλησίος, plesios, meaning "near to" and Sauria) or plesiosaurs are an order or clade of Mesozoic marine reptiles (marine Sauropsida), belonging to the Sauropterygia.
New!!: Amniote and Plesiosauria · See more »
Procolophonoidea
Procolophonoidea is an extinct superfamily of procolophonian parareptiles.
New!!: Amniote and Procolophonoidea · See more »
Procolophonomorpha
Procolophonomorpha is an order or clade of early reptiles that appeared during the Middle Permian.
New!!: Amniote and Procolophonomorpha · See more »
Protoclepsydrops
Protoclepsydrops is an extinct genus of early synapsids, found in Joggins, Nova Scotia.
New!!: Amniote and Protoclepsydrops · See more »
Protorosauria
Protorosauria is an extinct, possibly polyphyletic, group of archosauromorph reptiles from the latest Permian (Changhsingian stage) to the early Late Triassic (Carnian stage) of Asia, Europe, North America.
New!!: Amniote and Protorosauria · See more »
Protorothyrididae
Protorothyrididae is an extinct family of small, lizard-like reptiles.
New!!: Amniote and Protorothyrididae · See more »
Pterosaur
Pterosaurs (from the Greek πτερόσαυρος,, meaning "winged lizard") were flying reptiles of the extinct clade or order Pterosauria.
New!!: Amniote and Pterosaur · See more »
Rauisuchia
"Rauisuchia" is a group of mostly large (often) Triassic archosaurs.
New!!: Amniote and Rauisuchia · See more »
Reptile
Reptiles are tetrapod animals in the class Reptilia, comprising today's turtles, crocodilians, snakes, amphisbaenians, lizards, tuatara, and their extinct relatives.
New!!: Amniote and Reptile · See more »
Reptiliomorpha
Reptiliomorpha is a clade containing the amniotes and those tetrapods that share a more recent common ancestor with amniotes than with living amphibians (lissamphibians).
New!!: Amniote and Reptiliomorpha · See more »
Respiration (physiology)
In physiology, respiration is defined as the movement of oxygen from the outside environment to the cells within tissues, and the transport of carbon dioxide in the opposite direction.
New!!: Amniote and Respiration (physiology) · See more »
Rhynchocephalia
Rhynchocephalia is an order of lizard-like reptiles that includes only one living species of tuatara, which in turn has two subspecies (Sphenodon punctatus punctatus and Sphenodon punctatus guntheri), which only inhabit parts of New Zealand.
New!!: Amniote and Rhynchocephalia · See more »
Rhynchonkos
Rhynchonkos is an extinct genus of microsaur.
New!!: Amniote and Rhynchonkos · See more »
Rhynchosaur
Rhynchosaurs were a group of Triassic diapsid reptiles related to the archosaurs.
New!!: Amniote and Rhynchosaur · See more »
Rib
In vertebrate anatomy, ribs (costae) are the long curved bones which form the rib cage.
New!!: Amniote and Rib · See more »
Robert L. Carroll
Robert Lynn Carroll (born May 5, 1938) is a vertebrate paleontologist who specialises in Paleozoic and Mesozoic amphibians and reptiles.
New!!: Amniote and Robert L. Carroll · See more »
Romer's gap
Romer's gap is an example of an apparent gap in the tetrapod fossil record used in the study of evolutionary biology.
New!!: Amniote and Romer's gap · See more »
Romeriida
Romeriida is a clade of reptiles that consists of diapsids and the extinct protorothyridid genus Paleothyris, if not the entire family Protorothyrididae.
New!!: Amniote and Romeriida · See more »
Sacrum
The sacrum (or; plural: sacra or sacrums) in human anatomy is a large, triangular bone at the base of the spine, that forms by the fusing of sacral vertebrae S1S5 between 18 and 30years of age.
New!!: Amniote and Sacrum · See more »
Saurischia
Saurischia (meaning "reptile-hipped" from the Greek (σαῦρος) meaning 'lizard' and (ἴσχιον) meaning 'hip joint') is one of the two basic divisions of dinosaurs (the other being Ornithischia).
New!!: Amniote and Saurischia · See more »
Sauropsida
Sauropsida ("lizard faces") is a group of amniotes that includes all existing birds and other reptiles as well as their fossil ancestors and other extinct relatives.
New!!: Amniote and Sauropsida · See more »
Sauropterygia
Sauropterygia ("lizard flippers") is an extinct, diverse taxon of aquatic reptiles that developed from terrestrial ancestors soon after the end-Permian extinction and flourished during the Mesozoic before they became extinct at the end of that era.
New!!: Amniote and Sauropterygia · See more »
Shoulder girdle
The shoulder girdle or pectoral girdle is the set of bones in the appendicular skeleton which connects to the arm on each side.
New!!: Amniote and Shoulder girdle · See more »
Skull
The skull is a bony structure that forms the head in vertebrates.
New!!: Amniote and Skull · See more »
Skull roof
The skull roof, or the roofing bones of the skull, are a set of bones covering the brain, eyes and nostrils in bony fishes and all land-living vertebrates.
New!!: Amniote and Skull roof · See more »
Snake
Snakes are elongated, legless, carnivorous reptiles of the suborder Serpentes.
New!!: Amniote and Snake · See more »
Spiracle
Spiracles are openings on the surface of some animals, which usually lead to respiratory systems.
New!!: Amniote and Spiracle · See more »
Squamata
Squamata is the largest order of reptiles, comprising lizards, snakes and amphisbaenians (worm lizards), which are collectively known as squamates or scaled reptiles.
New!!: Amniote and Squamata · See more »
Sternum
The sternum or breastbone is a long flat bone located in the center of the chest.
New!!: Amniote and Sternum · See more »
Synapomorphy and apomorphy
In phylogenetics, apomorphy and synapomorphy refer to derived characters of a clade – characters or traits that are derived from ancestral characters over evolutionary history.
New!!: Amniote and Synapomorphy and apomorphy · See more »
Synapsid
Synapsids (Greek, 'fused arch'), synonymous with theropsids (Greek, 'beast-face'), are a group of animals that includes mammals and every animal more closely related to mammals than to other living amniotes.
New!!: Amniote and Synapsid · See more »
Tadpole
A tadpole (also called a pollywog) is the larval stage in the life cycle of an amphibian, particularly that of a frog or toad.
New!!: Amniote and Tadpole · See more »
Talus bone
The talus (Latin for ankle), talus bone, astragalus, or ankle bone is one of the group of foot bones known as the tarsus.
New!!: Amniote and Talus bone · See more »
Terrapin
A terrapin is one of several small species of testudines living in fresh or brackish water.
New!!: Amniote and Terrapin · See more »
Tetrapod
The superclass Tetrapoda (from Greek: τετρα- "four" and πούς "foot") contains the four-limbed vertebrates known as tetrapods; it includes living and extinct amphibians, reptiles (including dinosaurs, and its subgroup birds) and mammals (including primates, and all hominid subgroups including humans), as well as earlier extinct groups.
New!!: Amniote and Tetrapod · See more »
Therapsid
Therapsida is a group of synapsids that includes mammals and their ancestors.
New!!: Amniote and Therapsid · See more »
Theria
Theria (Greek: θηρίον, wild beast) is a subclass of mammals amongst the Theriiformes (the sister taxa to Yinotheria).
New!!: Amniote and Theria · See more »
Theropoda
Theropoda (or, from Greek θηρίον "wild beast" and πούς, ποδός "foot") or theropods are a dinosaur suborder characterized by hollow bones and three-toed limbs.
New!!: Amniote and Theropoda · See more »
Thyroid hormones
Thyroid hormones are two hormones produced and released by the thyroid gland, namely triiodothyronine (T3) and thyroxine (T4).
New!!: Amniote and Thyroid hormones · See more »
Tortoise
Tortoises are a family, Testudinidae. Testudinidae is a Family under the order Testudines and suborder Cryptodira.
New!!: Amniote and Tortoise · See more »
Trophic level
The trophic level of an organism is the position it occupies in a food chain.
New!!: Amniote and Trophic level · See more »
Tuatara
Tuatara are reptiles endemic to New Zealand.
New!!: Amniote and Tuatara · See more »
Turtle
Turtles are diapsids of the order Testudines (or Chelonii) characterized by a special bony or cartilaginous shell developed from their ribs and acting as a shield.
New!!: Amniote and Turtle · See more »
Vertebrate
Vertebrates comprise all species of animals within the subphylum Vertebrata (chordates with backbones).
New!!: Amniote and Vertebrate · See more »
Vitelline membrane
The vitelline membrane or vitelline envelope is a structure surrounding the outer surface of the plasma membrane of an ovum (the oolemma) or, in some animals (e.g., birds), the extracellular yolk and the oolemma.
New!!: Amniote and Vitelline membrane · See more »
Westlothiana
Westlothiana is a genus of reptile-like amphibian or possibly early reptile that bore a superficial resemblance to modern-day lizards.
New!!: Amniote and Westlothiana · See more »
Younginiformes
Younginiformes is a replacement name for the taxon Eosuchia, proposed by Alfred Romer in 1947.
New!!: Amniote and Younginiformes · See more »
Redirects here:
AMNIOTA, Amniota, Amniotes, Amniotic egg, Amnitric egg, Higher vertebrate, Higher vertebrates.
References
[1] https://en.wikipedia.org/wiki/Amniote
