Faster access than browser!
104 relations: Acanthocephala, Acoela, Acoelomorpha, Adam Sedgwick (zoologist), Ambulacraria, Animal, Annelid, Anus, Arthropod, Aschelminth, Élie Metchnikoff, Berthold Hatschek, Bilateria, Body plan, Brachiopod, Bryozoa, Cambroernid, Cephalization, Cephalochordate, Chaetognatha, Chordate, Cilium, Clade, Cnidaria, Coelom, Craniate, Ctenophora, Cycloneuralia, Deuterostome, Dicyemida, Ecdysozoa, Echinoderm, Ectoderm, Ediacaran, Embryo, Embryo fossil, Embryological origins of the mouth and anus, Endoderm, Entoprocta, Ernst Haeckel, Extinction, Flatworm, Gastrointestinal tract, Gastrotrich, Germ layer, Gnathifera (clade), Gnathostomulid, Helminths, Hemichordate, Holocene, ..., Hydrostatic skeleton, Hyolitha, Kimberella, Kinorhyncha, Larva, Libbie Hyman, Limnognathia, Lophotrochozoa, Loricifera, Ludwig von Graff, Mesoderm, Mesozoa, Mollusca, Most recent common ancestor, Mouth, Muscle, Nematode, Nematoida, Nematomorpha, Nemertea, Nemertodermatida, Nephrozoa, Onychophora, Orthonectida, Panarthropoda, ParaHoxozoa, Peristalsis, Phoronid, Phylogenetic tree, Phylum, Placozoa, Platytrochozoa, Platyzoa, Priapulida, Proarticulata, Protostome, Rotifer, Saccorhytus, Salinella, Scalidophora, Sense, Spiralia, Sponge, Symbion, Tactopoda, Tardigrade, Taxonomy (biology), Triploblasty, Tunicate, Urbilaterian, Vernanimalcula, Vetulicolia, Xenacoelomorpha, Xenoturbella. Expand index (54 more) »
Acanthocephala
Acanthocephala (Greek ἄκανθος, akanthos, thorn + κεφαλή, kephale, head) is a phylum of parasitic worms known as acanthocephalans, thorny-headed worms, or spiny-headed worms, characterized by the presence of an eversible proboscis, armed with spines, which it uses to pierce and hold the gut wall of its host.
New!!: Bilateria and Acanthocephala · See more »
Acoela
The Acoela or acoels are a class of small and simple invertebrates in the phylum Xenacoelomorpha which resemble flatworms.
New!!: Bilateria and Acoela · See more »
Acoelomorpha
Acoelomorpha is a subphylum of very simple and small soft-bodied animals with planula-like features which live in marine or brackish waters.
New!!: Bilateria and Acoelomorpha · See more »
Adam Sedgwick (zoologist)
Adam Sedgwick FRS (28 September 1854 – 27 February 1913) was a British zoologist and Professor of Zoology and Comparative Anatomy, Imperial College, London, and a great nephew of the renowned geologist Adam Sedgwick.
New!!: Bilateria and Adam Sedgwick (zoologist) · See more »
Ambulacraria
Ambulacraria or Coelomopora is a clade of invertebrate phyla which includes echinoderms and hemichordates; a member of this group is called an ambulacrarian.
New!!: Bilateria and Ambulacraria · See more »
Animal
Animals are multicellular eukaryotic organisms that form the biological kingdom Animalia.
New!!: Bilateria and Animal · See more »
Annelid
The annelids (Annelida, from Latin anellus, "little ring"), also known as the ringed worms or segmented worms, are a large phylum, with over 22,000 extant species including ragworms, earthworms, and leeches.
New!!: Bilateria and Annelid · See more »
Anus
The anus (from Latin anus meaning "ring", "circle") is an opening at the opposite end of an animal's digestive tract from the mouth.
New!!: Bilateria and Anus · See more »
Arthropod
An arthropod (from Greek ἄρθρον arthron, "joint" and πούς pous, "foot") is an invertebrate animal having an exoskeleton (external skeleton), a segmented body, and paired jointed appendages.
New!!: Bilateria and Arthropod · See more »
Aschelminth
The Aschelminthes (also known as Aeschelminthes "Nemathelminthes" "Nematodes"), closely associated with the Platyhelminthes, are an obsolete phylum of pseudocoelomate and other similar animals that are no longer considered closely related and have been promoted to phyla in their own right.
New!!: Bilateria and Aschelminth · See more »
Élie Metchnikoff
Ilya Ilyich Mechnikov (Илья́ Ильи́ч Ме́чников, also written as Élie Metchnikoff; 15 July 1916) was a Russian zoologist best known for his pioneering research in immunology.
New!!: Bilateria and Élie Metchnikoff · See more »
Berthold Hatschek
Berthold Hatschek (3 April 1854 – 18 January 1941) was an Austrian zoologist remembered for embryological and morphological studies of invertebrates.
New!!: Bilateria and Berthold Hatschek · See more »
Bilateria
The Bilateria or bilaterians, or triploblasts, are animals with bilateral symmetry, i.e., they have a head (anterior) and a tail (posterior) as well as a back (dorsal) and a belly (ventral); therefore they also have a left side and a right side.
New!!: Bilateria and Bilateria · See more »
Body plan
A body plan, Bauplan (German plural Baupläne), or ground plan is a set of morphological features common to many members of a phylum of animals.
New!!: Bilateria and Body plan · See more »
Brachiopod
Brachiopods, phylum Brachiopoda, are a group of lophotrochozoan animals that have hard "valves" (shells) on the upper and lower surfaces, unlike the left and right arrangement in bivalve molluscs.
New!!: Bilateria and Brachiopod · See more »
Bryozoa
Bryozoa (also known as the Polyzoa, Ectoprocta or commonly as moss animals) are a phylum of aquatic invertebrate animals.
New!!: Bilateria and Bryozoa · See more »
Cambroernid
The cambroernids are a clade containing the eldoniids and Herpetogaster-like forms.
New!!: Bilateria and Cambroernid · See more »
Cephalization
Cephalization is an evolutionary trend in which, over many generations, the mouth, sense organs, and nerve ganglia become concentrated at the front end of an animal, producing a head region.
New!!: Bilateria and Cephalization · See more »
Cephalochordate
A cephalochordate (from Greek: κεφαλή, "head" and χορδή, "chord") is an animal in the chordate subphylum, Cephalochordata.
New!!: Bilateria and Cephalochordate · See more »
Chaetognatha
Chaetognatha, meaning bristle-jaws, and commonly known as arrow worms, is a phylum of predatory marine worms which are a major component of plankton worldwide.
New!!: Bilateria and Chaetognatha · See more »
Chordate
A chordate is an animal belonging to the phylum Chordata; chordates possess a notochord, a hollow dorsal nerve cord, pharyngeal slits, an endostyle, and a post-anal tail, for at least some period of their life cycle.
New!!: Bilateria and Chordate · See more »
Cilium
A cilium (the plural is cilia) is an organelle found in eukaryotic cells.
New!!: Bilateria and Cilium · 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!!: Bilateria and Clade · See more »
Cnidaria
Cnidaria is a phylum containing over 10,000 species of animals found exclusively in aquatic (freshwater and marine) environments: they are predominantly marine species.
New!!: Bilateria and Cnidaria · See more »
Coelom
The coelom is the main body cavity in most animals and is positioned inside the body to surround and contain the digestive tract and other organs.
New!!: Bilateria and Coelom · See more »
Craniate
A craniate is a member of the Craniata (sometimes called the Craniota), a proposed clade of chordate animals with a skull of hard bone or cartilage.
New!!: Bilateria and Craniate · See more »
Ctenophora
Ctenophora (singular ctenophore, or; from the Greek κτείς kteis 'comb' and φέρω pherō 'to carry'; commonly known as comb jellies) is a phylum of invertebrate animals that live in marine waters worldwide.
New!!: Bilateria and Ctenophora · See more »
Cycloneuralia
Cycloneuralia is a clade of ecdysozoan animals including the Scalidophora (Kinorhynchans, Loriciferans, Priapulids) and the Nematoida (nematodes, Nematomorphs).
New!!: Bilateria and Cycloneuralia · See more »
Deuterostome
Deuterostomes (taxonomic term: Deuterostomia; meaning "second mouth" in Greek) are any members of a superphylum of animals.
New!!: Bilateria and Deuterostome · See more »
Dicyemida
Dicyemida, also known as Rhombozoa, is a phylum of tiny parasites that live in the renal appendages of cephalopods.
New!!: Bilateria and Dicyemida · See more »
Ecdysozoa
Ecdysozoa is a group of protostome animals, including Arthropoda (insects, chelicerata, crustaceans, and myriapods), Nematoda, and several smaller phyla.
New!!: Bilateria and Ecdysozoa · See more »
Echinoderm
Echinoderm is the common name given to any member of the phylum Echinodermata (from Ancient Greek, ἐχῖνος, echinos – "hedgehog" and δέρμα, derma – "skin") of marine animals.
New!!: Bilateria and Echinoderm · See more »
Ectoderm
Ectoderm is one of the three primary germ layers in the very early embryo.
New!!: Bilateria and Ectoderm · See more »
Ediacaran
The Ediacaran Period, spans 94 million years from the end of the Cryogenian Period 635 million years ago (Mya), to the beginning of the Cambrian Period 541 Mya.
New!!: Bilateria and Ediacaran · See more »
Embryo
An embryo is an early stage of development of a multicellular diploid eukaryotic organism.
New!!: Bilateria and Embryo · See more »
Embryo fossil
Fossil embryos are the preserved remains of unhatched or unborn organisms.
New!!: Bilateria and Embryo fossil · See more »
Embryological origins of the mouth and anus
The embryological origin of the mouth and anus is an important characteristic, and forms the morphological basis for separating bilaterian animals into two natural groupings: the protostomes and deuterostomes.
New!!: Bilateria and Embryological origins of the mouth and anus · See more »
Endoderm
Endoderm is one of the three primary germ layers in the very early embryo.
New!!: Bilateria and Endoderm · See more »
Entoprocta
Entoprocta, whose name means "anus inside", is a phylum of mostly sessile aquatic animals, ranging from long.
New!!: Bilateria and Entoprocta · 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!!: Bilateria and Ernst Haeckel · See more »
Extinction
In biology, extinction is the termination of an organism or of a group of organisms (taxon), normally a species.
New!!: Bilateria and Extinction · See more »
Flatworm
The flatworms, flat worms, Platyhelminthes, Plathelminthes, or platyhelminths (from the Greek πλατύ, platy, meaning "flat" and ἕλμινς (root: ἑλμινθ-), helminth-, meaning "worm") are a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates.
New!!: Bilateria and Flatworm · See more »
Gastrointestinal tract
The gastrointestinal tract (digestive tract, digestional tract, GI tract, GIT, gut, or alimentary canal) is an organ system within humans and other animals which takes in food, digests it to extract and absorb energy and nutrients, and expels the remaining waste as feces.
New!!: Bilateria and Gastrointestinal tract · See more »
Gastrotrich
The gastrotrichs (phylum Gastrotricha), commonly referred to as hairybacks, are a group of microscopic (0.06-3.0 mm), worm-like, pseudocoelomate animals, and are widely distributed and abundant in freshwater and marine environments.
New!!: Bilateria and Gastrotrich · See more »
Germ layer
A germ layer is a primary layer of cells that form during embryogenesis.
New!!: Bilateria and Germ layer · See more »
Gnathifera (clade)
Gnathifera is an assemblage of phyla of platyzoans comprising the rotifers (Bdelloidea, Monogononta, Seisonidae), acanthocephalans, and gnathostomulids.
New!!: Bilateria and Gnathifera (clade) · See more »
Gnathostomulid
Gnathostomulids, or jaw worms, are a small phylum of nearly microscopic marine animals.
New!!: Bilateria and Gnathostomulid · See more »
Helminths
Helminths, also commonly known as parasitic worms, are large multicellular parasites, which can generally be seen with the naked eye when they are mature.
New!!: Bilateria and Helminths · See more »
Hemichordate
Hemichordata is a phylum of marine deuterostome animals, generally considered the sister group of the echinoderms.
New!!: Bilateria and Hemichordate · See more »
Holocene
The Holocene is the current geological epoch.
New!!: Bilateria and Holocene · See more »
Hydrostatic skeleton
A hydrostatic skeleton, or hydroskeleton, is a skeleton supported by fluid pressure.
New!!: Bilateria and Hydrostatic skeleton · See more »
Hyolitha
Hyoliths are animals with small conical shells, known as fossils from the Palaeozoic Era.
New!!: Bilateria and Hyolitha · See more »
Kimberella
Kimberella is a monospecific genus of bilaterian known only from rocks of the Ediacaran period.
New!!: Bilateria and Kimberella · See more »
Kinorhyncha
Kinorhyncha (I move, ῥύγχος "snout") is a phylum of small (1 mm or less) marine invertebrates that are widespread in mud or sand at all depths as part of the meiobenthos.
New!!: Bilateria and Kinorhyncha · See more »
Larva
A larva (plural: larvae) is a distinct juvenile form many animals undergo before metamorphosis into adults.
New!!: Bilateria and Larva · See more »
Libbie Hyman
Libbie Henrietta Hyman (December 6, 1888 – August 3, 1969), was a U.S. zoologist.
New!!: Bilateria and Libbie Hyman · See more »
Limnognathia
Limnognathia maerski is a microscopic platyzoan animal, discovered living in homothermic springs on Disko Island, Greenland in 1994, that has variously been assigned as a class or subphylum in the phylum Gnathifera or as a phylum in a Gnathifera superphylum, named Micrognathozoa.
New!!: Bilateria and Limnognathia · See more »
Lophotrochozoa
Lophotrochozoa ("crest/wheel animals") is a clade of protostome animals within the Spiralia.
New!!: Bilateria and Lophotrochozoa · See more »
Loricifera
Loricifera (from Latin, lorica, corselet (armour) + ferre, to bear) is a phylum of very small to microscopic marine cycloneuralian sediment-dwelling animals with 37 described species, in nine genera.
New!!: Bilateria and Loricifera · See more »
Ludwig von Graff
Ludwig Graff de Pancsova (2 January 1851 – 6 February 1924), more known as Ludwig von Graff, was an Austrian zoologist born in Pancsova.
New!!: Bilateria and Ludwig von Graff · See more »
Mesoderm
In all bilaterian animals, the mesoderm is one of the three primary germ layers in the very early embryo.
New!!: Bilateria and Mesoderm · See more »
Mesozoa
The Mesozoa (singular: mesozoon) are minuscule, worm-like parasites of marine invertebrates.
New!!: Bilateria and Mesozoa · See more »
Mollusca
Mollusca is a large phylum of invertebrate animals whose members are known as molluscs or mollusksThe formerly dominant spelling mollusk is still used in the U.S. — see the reasons given in Gary Rosenberg's.
New!!: Bilateria and Mollusca · See more »
Most recent common ancestor
In biology and genealogy, the most recent common ancestor (MRCA, also last common ancestor (LCA), or concestor) of any set of organisms is the most recent individual from which all the organisms are directly descended.
New!!: Bilateria and Most recent common ancestor · See more »
Mouth
In animal anatomy, the mouth, also known as the oral cavity, buccal cavity, or in Latin cavum oris, is the opening through which many animals take in food and issue vocal sounds.
New!!: Bilateria and Mouth · See more »
Muscle
Muscle is a soft tissue found in most animals.
New!!: Bilateria and Muscle · See more »
Nematode
The nematodes or roundworms constitute the phylum Nematoda (also called Nemathelminthes).
New!!: Bilateria and Nematode · See more »
Nematoida
Nematoida is a grouping of animals, including the roundworms and horsehair worms.
New!!: Bilateria and Nematoida · See more »
Nematomorpha
Nematomorpha (sometimes called Gordiacea, and commonly known as horsehair worms or Gordian worms) are a phylum of parasitoid animals superficially similar to nematode worms in morphology, hence the name.
New!!: Bilateria and Nematomorpha · See more »
Nemertea
Nemertea is a phylum of invertebrate animals also known as "ribbon worms" or "proboscis worms".
New!!: Bilateria and Nemertea · See more »
Nemertodermatida
Nemertodermatida is a class of Acoela, comprising about ten species of millimetre-sized 'tubellariform', mostly interstitial worms.
New!!: Bilateria and Nemertodermatida · See more »
Nephrozoa
Nephrozoa is a major clade of bilaterians, divided into the protostomes and the deuterostomes, containing almost all animal phyla and over a million extant species.
New!!: Bilateria and Nephrozoa · See more »
Onychophora
Onychophora (from Ancient Greek, onyches, "claws"; and pherein, "to carry"), commonly known as velvet worms (due to their velvety texture and somewhat wormlike appearance) or more ambiguously as peripatus (after the first described genus, Peripatus), is a phylum of elongate, soft-bodied, many-legged panarthropods.
New!!: Bilateria and Onychophora · See more »
Orthonectida
Orthonectida is a small phylum of poorly known parasites of marine invertebrates that are among the simplest of multi-cellular organisms.
New!!: Bilateria and Orthonectida · See more »
Panarthropoda
Panarthropoda is a proposed animal clade combining the extant phyla Arthropoda, Tardigrada and Onychophora, Not all studies support it, but most do, including neuroanatomical, mitogenomic and palaeontological studies.
New!!: Bilateria and Panarthropoda · See more »
ParaHoxozoa
The ParaHoxozoa are a proposed basal Diploblast/Eumetazoa clade as sister of the Ctenophora.
New!!: Bilateria and ParaHoxozoa · See more »
Peristalsis
Peristalsis is a radially symmetrical contraction and relaxation of muscles that propagates in a wave down a tube, in an anterograde direction.
New!!: Bilateria and Peristalsis · See more »
Phoronid
Phoronids (scientific name Phoronida, sometimes called horseshoe worms) are a small phylum of marine animals that filter-feed with a lophophore (a "crown" of tentacles), and build upright tubes of chitin to support and protect their soft bodies.
New!!: Bilateria and Phoronid · 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!!: Bilateria and Phylogenetic tree · See more »
Phylum
In biology, a phylum (plural: phyla) is a level of classification or taxonomic rank below Kingdom and above Class.
New!!: Bilateria and Phylum · See more »
Placozoa
The Placozoa are a basal form of free-living (non-parasitic) multicellular organism.
New!!: Bilateria and Placozoa · See more »
Platytrochozoa
The Platytrochozoa are a proposed basal Spiralia clade of animals as sister of the Gnathifera.
New!!: Bilateria and Platytrochozoa · See more »
Platyzoa
The paraphyletic "Platyzoa" are a group of protostome unsegmented animals proposed by Thomas Cavalier-Smith in 1998.
New!!: Bilateria and Platyzoa · See more »
Priapulida
Priapulida (priapulid worms, from Gr. πριάπος, priāpos 'Priapus' + Lat. -ul-, diminutive), sometimes referred to as penis worms, is a phylum of unsegmented marine worms.
New!!: Bilateria and Priapulida · See more »
Proarticulata
Proarticulata is an extinct phylum of very early, superficially bilaterally symmetrical animals known from fossils found in the Ediacaran (Vendian) marine deposits, and dates to approximately.
New!!: Bilateria and Proarticulata · See more »
Protostome
Protostomia (from Greek πρωτο- proto- "first" and στόμα stoma "mouth") is a clade of animals.
New!!: Bilateria and Protostome · See more »
Rotifer
The rotifers (Rotifera, commonly called wheel animals) make up a phylum of microscopic and near-microscopic pseudocoelomate animals.
New!!: Bilateria and Rotifer · See more »
Saccorhytus
Saccorhytus (from Latin saccus "bag" and Ancient Greek ῥύτις rhytis "wrinkle") is an extinct genus of animal belonging to the superphylum Deuterostomia, which is represented by a single species, Saccorhytus coronarius (from Latin attributive coronarius " crown").
New!!: Bilateria and Saccorhytus · See more »
Salinella
Salinella salve is a dubious species of very simple animal that may not exist, but which some have named as the sole member of the phylum Monoblastozoa.
New!!: Bilateria and Salinella · See more »
Scalidophora
Scalidophora is a group of marine pseudocoelomate protostomes that was proposed on morphological grounds to unite three phyla: the Kinorhyncha, the Priapulida and the Loricifera.
New!!: Bilateria and Scalidophora · See more »
Sense
A sense is a physiological capacity of organisms that provides data for perception.
New!!: Bilateria and Sense · See more »
Spiralia
The Spiralia are a morphologically diverse clade of protostome animals, including within their number the molluscs, annelids, platyhelminths and other taxa.
New!!: Bilateria and Spiralia · See more »
Sponge
Sponges, the members of the phylum Porifera (meaning "pore bearer"), are a basal Metazoa clade as sister of the Diploblasts.
New!!: Bilateria and Sponge · See more »
Symbion
Symbion is the name of a genus of aquatic animals, less than 0.5 mm wide, found living attached to the bodies of cold-water lobsters.
New!!: Bilateria and Symbion · See more »
Tactopoda
Tactopoda is a proposed clade of protostome animals that includes the phyla Tardigrada and Euarthropoda, supported by various morphological observations.
New!!: Bilateria and Tactopoda · See more »
Tardigrade
Tardigrades (also known colloquially as water bears, or moss piglets) are water-dwelling, eight-legged, segmented micro-animals.
New!!: Bilateria and Tardigrade · See more »
Taxonomy (biology)
Taxonomy is the science of defining and naming groups of biological organisms on the basis of shared characteristics.
New!!: Bilateria and Taxonomy (biology) · See more »
Triploblasty
Triploblasty is a condition of the blastula in which there are three primary germ layers: the ectoderm, mesoderm, and endoderm.
New!!: Bilateria and Triploblasty · See more »
Tunicate
A tunicate is a marine invertebrate animal, a member of the subphylum Tunicata, which is part of the Chordata, a phylum which includes all animals with dorsal nerve cords and notochords.
New!!: Bilateria and Tunicate · See more »
Urbilaterian
The urbilaterian (from German ur- 'original') is the hypothetical last common ancestor of the bilaterian clade, i.e., all animals having a bilateral symmetry.
New!!: Bilateria and Urbilaterian · See more »
Vernanimalcula
Vernanimalcula guizhouena is an acritarch dating from; it was between 0.1 and 0.2 mm across (roughly the width of one or two human hairs).
New!!: Bilateria and Vernanimalcula · See more »
Vetulicolia
VetulicoliaThe taxon name, Vetulocolia, is derived from the type genus, Vetulicola, which is a compound Latin word composed of vetuli "old" and cola "inhabitant".
New!!: Bilateria and Vetulicolia · See more »
Xenacoelomorpha
Xenacoelomorpha is a basal bilaterian phylum of small and very simple animals, grouping the xenoturbellids with the acoelomorphs.
New!!: Bilateria and Xenacoelomorpha · See more »
Xenoturbella
Xenoturbella is a genus of very simple bilaterians up to a few centimeters long.
New!!: Bilateria and Xenoturbella · See more »
Redirects here:
Bilatarian, Bilatera, Bilateral animal, Bilateral animals, Bilaterian, Bilaterians, Triploblasts.
References
[1] https://en.wikipedia.org/wiki/Bilateria
