94 relations: Alfred Romer, Allantois, American Museum of Natural History, Amnion, Amniote, Amphibian, Anapsid, Anthracosauria, Aquatic animal, Archeria (animal), Caecilian, Captorhinida, Captorhinidae, Carboniferous, Caseasauria, Casineria, Chorion, Chroniosuchia, Chroniosuchidae, Clade, Devonian, Diadectes, Diadectomorpha, Discosauriscus, Early Triassic, Earth, Eel, Egg, Embolomeri, Embryo, Eogyrinus, Eupelycosauria, Eureptilia, Evolutionary grade, Fossil, Friedrich von Huene, Frog, Geological period, Gephyrostegidae, Gunnar Säve-Söderbergh, Holocene, Homo sapiens, Internal fertilization, Labyrinthodontia, Larva, Lepospondyli, Leptodactylidae, Limnoscelis, Linnaean taxonomy, Lissamphibia, ..., List of reptiliomorphs, Lizard, Meddelelser om Grønland, Michael Benton, Michel Laurin, Microsauria, Mississippian (geology), Nature (journal), Newt, Order (biology), Otic notch, Parareptilia, Pareiasaur, Permian, Permian–Triassic extinction event, Phalanx bone, Phylogenetic nomenclature, Polyphyly, Premaxilla, Procolophonia, Quadrate bone, Reptile, Salamander, Sauropsida, Seymouria, Seymouriamorpha, Skull roof, Solenodonsaurus, Spiracle, Synapsid, Tailed frog, Taxonomy (biology), Temnospondyli, Terrestrial animal, Tetrapod, Tree of Life Web Project, Turtle, Tympanum (anatomy), University of Bristol, Urea, Vertebra, Viséan, Vomer, Westlothiana. Expand index (44 more) » « Shrink index
Alfred Sherwood Romer (December 28, 1894 – November 5, 1973) was an American paleontologist and biologist and a specialist in vertebrate evolution.
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).
The American Museum of Natural History (abbreviated as AMNH), located on the Upper West Side of Manhattan, New York City, is one of the largest museums in the world.
The amnion is a membrane that closely covers the embryo when first formed.
Amniotes (from Greek ἀμνίον amnion, "membrane surrounding the fetus", earlier "bowl in which the blood of sacrificed animals was caught", from ἀμνός amnos, "lamb") are a clade of tetrapod vertebrates comprising the reptiles, birds, and mammals.
Amphibians are ectothermic, tetrapod vertebrates of the class Amphibia.
An anapsid is an amniote whose skull does not have openings near the temples.
Anthracosauria is an order of extinct reptile-like amphibians that flourished during the Carboniferous and early Permian periods, although precisely which species are included depends on one's definition of the taxon.
A aquatic animal is an animal, either vertebrate or invertebrate, which lives in the water for most or all of its lifetime.
Archeria was an eel-like anthracosaur which lived in the Early Permian.
Caecilians (New Latin for "blind ones") are a group of limbless, serpentine amphibians.
Labidosaurus hamatus'' Captorhinida (older name: Cotylosauria) is a doubly paraphyletic grouping of early reptiles.
Captorhinidae (also known as cotylosaurs) is one of the earliest and most basal reptile families, all members of which are extinct.
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.
Caseasauria is one of the two main clades of early synapsids, the other being the Eupelycosauria.
Casineria is an extinct genus of tetrapod which lived about 340 million years ago in the Mississippian epoch.
The chorion is the outermost fetal membrane around the embryo in mammals, birds and reptiles.
Chroniosuchia is a group of tetrapods that lived from the Middle Permian to Late Triassic in what is now Eastern Europe, Kyrgyzstan, China and Germany.
The Chroniosuchidae are a family of semi-aquatic reptiliomorph amphibians found in sediments from the upper Permian and the upper Triassic periods, most in Russia.
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".
The Devonian is a geologic period and system of the Paleozoic, spanning 60 million years from the end of the Silurian, million years ago (Mya), to the beginning of the Carboniferous, Mya.
Diadectes (meaning crosswise-biter) is an extinct genus of large, very reptile-like amphibians that lived during the early Permian period (Artinskian-Kungurian stages of the Cisuralian epoch, between 290 and 272 million years ago).
Diadectomorpha are a clade of large reptile-like amphibians that lived in Euramerica during the Carboniferous and Early Permian periods and in Asia during Late Permian (Wuchiapingian), and are very close to the ancestry of the Amniota.
Discosauriscus was a small reptiliomorph, It lived in what is now Central and Western Europe in the Early Permian Period.
The Early Triassic is the first of three epochs of the Triassic Period of the geologic timescale.
Earth is the third planet from the Sun and the only astronomical object known to harbor life.
An eel is any ray-finned fish belonging to the order Anguilliformes, which consists of four suborders, 20 families, 111 genera and about 800 species.
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.
Embolomeri is a suborder of Reptiliomorpha.
An embryo is an early stage of development of a multicellular diploid eukaryotic organism.
Eogyrinus attheyi (from Greek eos, meaning "dawn", and gyrinos, meaning "tadpole") was one of the largest Carboniferous tetrapods, and perhaps one of the largest of its family, Eogyrinidae, at in length.
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.
Eureptilia ("true reptiles") is one of the two major clades of the Sauropsida, the other being Parareptilia.
In alpha taxonomy, a grade is a taxon united by a level of morphological or physiological complexity.
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.
Friedrich von Huene, full name Friedrich Richard von Hoinigen (March 22, 1875 – April 4, 1969) was a German paleontologist who renamed more dinosaurs in the early 20th century than anyone else in Europe.
A frog is any member of a diverse and largely carnivorous group of short-bodied, tailless amphibians composing the order Anura (Ancient Greek ἀν-, without + οὐρά, tail).
A geological period is one of several subdivisions of geologic time enabling cross-referencing of rocks and geologic events from place to place.
Gephyrostegidae is an extinct family of reptiliomorph tetrapods from the Late Carboniferous including the genera Gephyrostegus, Bruktererpeton, and Eusauropleura.
Gunnar Säve-Söderbergh (January 31, 1910 – June 8, 1948) was a Swedish palaeontologist and geologist.
The Holocene is the current geological epoch.
Homo sapiens is the systematic name used in taxonomy (also known as binomial nomenclature) for the only extant human species.
Internal fertilization is the union of an egg cell with a sperm during sexual reproduction inside the body of a parent.
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).
A larva (plural: larvae) is a distinct juvenile form many animals undergo before metamorphosis into adults.
Lepospondyli is a diverse taxon of reptiliomorph tetrapods.
The southern frogs form the Leptodactylidae, a diverse family of frogs that probably diverged from other hyloids during the Cretaceous.
Limnoscelis is a genus of large (1.5 m in total length), very reptile-like diadectomorph (a type of reptile-like amphibian) from the Early Permian of North America.
Linnaean taxonomy can mean either of two related concepts.
The Lissamphibia are a group of tetrapods that includes all modern amphibians.
A list of reptiliomorphs throughout their time.
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.
Meddelelser om Grønland ("Communications on Greenland") was a Danish scientific periodical issued by the Commission for Scientific Investigations in Greenland.
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.
Michel Laurin is a vertebrate paleontologist whose specialties include the emergence of a land-based lifestyle among vertebrates, the evolution of body size, and the origin and phylogeny of lissamphibians.
Microsauria ("small lizards") is an extinct order of amphibians from the late Carboniferous and early Permian periods.
The Mississippian (also known as Lower Carboniferous or Early Carboniferous) is a subperiod in the geologic timescale or a subsystem of the geologic record.
Nature is a British multidisciplinary scientific journal, first published on 4 November 1869.
A newt is a salamander in the subfamily Pleurodelinae, also called eft during its terrestrial juvenile phase.
In biological classification, the order (ordo) is.
Otic notches are invaginations in the posterior margin of the skull roof, one behind each orbit.
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.
Pareiasaurs (meaning "cheek lizards") are an extinct group of anapsid reptiles classified in the family Pareiasauridae.
The Permian is a geologic period and system which spans 47 million years from the end of the Carboniferous Period million years ago (Mya), to the beginning of the Triassic period 251.902 Mya.
The Permian–Triassic (P–Tr or P–T) extinction event, colloquially known as the Great Dying, the End-Permian Extinction or the Great Permian Extinction, occurred about 252 Ma (million years) ago, forming the boundary between the Permian and Triassic geologic periods, as well as the Paleozoic and Mesozoic eras.
The phalanges (singular: phalanx) are digital bones in the hands and feet of most vertebrates.
Phylogenetic nomenclature, often called cladistic nomenclature, is a method of nomenclature for taxa in biology that uses phylogenetic definitions for taxon names as explained below.
A polyphyletic group is a set of organisms, or other evolving elements, that have been grouped together but do not share an immediate common ancestor.
The premaxilla (or praemaxilla) is one of a pair of small cranial bones at the very tip of the upper jaw of many animals, usually, but not always, bearing teeth.
The Procolophonia are a suborder of herbivorous reptiles that lived from the Middle Permian till the end of the Triassic period.
The quadrate bone is part of a skull in most tetrapods, including amphibians, sauropsids (reptiles, birds), and early synapsids.
Reptiles are tetrapod animals in the class Reptilia, comprising today's turtles, crocodilians, snakes, amphisbaenians, lizards, tuatara, and their extinct relatives.
Salamanders are a group of amphibians typically characterized by a lizard-like appearance, with slender bodies, blunt snouts, short limbs projecting at right angles to the body, and the presence of a tail in both larvae and adults.
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.
Seymouria was a reptile-like tetrapod from the early Permian of North America and Europe (approximately 280 to 270 million years ago).
Seymouriamorpha were a small but widespread group of limbed vertebrates (tetrapods).
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.
Solenodonsaurus ("single-tooth lizard") is an extinct genus of reptiliomorphs that lived in what is now Czech Republic, during the Westphalian stage.
Spiracles are openings on the surface of some animals, which usually lead to respiratory systems.
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.
The tailed frogs are two species of frogs in the genus Ascaphus, the only taxon in the family Ascaphidae.
Taxonomy is the science of defining and naming groups of biological organisms on the basis of shared characteristics.
Temnospondyli (from Greek τέμνειν (temnein, "to cut") and σπόνδυλος (spondylos, "vertebra")) is a diverse subclass of extinct small to giant tetrapods—often considered primitive amphibians—that flourished worldwide during the Carboniferous, Permian, and Triassic periods.
Terrestrial animals are animals that live predominantly or entirely on land (e.g., cats, ants, spiders), as compared with aquatic animals, which live predominantly or entirely in the water (e.g., fish, lobsters, octopuses), or amphibians, which rely on a combination of aquatic and terrestrial habitats (e.g., frogs, or newts).
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.
The Tree of Life Web Project is an Internet project providing information about the diversity and phylogeny of life on Earth.
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.
The tympanum is an external hearing structure in animals such as mammals, birds, some reptiles, some amphibians and some insects.
The University of Bristol (simply referred to as Bristol University and abbreviated as Bris. in post-nominal letters, or UoB) is a red brick research university located in Bristol, United Kingdom.
Urea, also known as carbamide, is an organic compound with chemical formula CO(NH2)2.
In the vertebrate spinal column, each vertebra is an irregular bone with a complex structure composed of bone and some hyaline cartilage, the proportions of which vary according to the segment of the backbone and the species of vertebrate.
The Visean, Viséan or Visian is an age in the ICS geologic timescale or a stage in the stratigraphic column.
The vomer is one of the unpaired facial bones of the skull.
Westlothiana is a genus of reptile-like amphibian or possibly early reptile that bore a superficial resemblance to modern-day lizards.