Animal Animals are multicellular, eukaryotic organisms in the Biology, biological Kingdom (biology), kingdom Animalia (). With few exceptions, animals heterotroph, consume organic material, Cellular respiration#Aerobic respiration, breathe oxygen, ...

s are

multicellular A multicellular organism is an organism that consists of more than one cell (biology), cell, unlike unicellular organisms. All species of animals, Embryophyte, land plants and most fungi are multicellular, as are many algae, whereas a few organism ...

eukaryotic The eukaryotes ( ) constitute the Domain (biology), domain of Eukaryota or Eukarya, organisms whose Cell (biology), cells have a membrane-bound cell nucleus, nucleus. All animals, plants, Fungus, fungi, seaweeds, and many unicellular organisms ...

organisms in the biological kingdom Animalia. With few exceptions, animals consume organic material, breathe oxygen, are able to move,

reproduce sexually Sexual reproduction is a type of reproduction that involves a complex Biological life cycle, life cycle in which a gamete (haploid reproductive cells, such as a sperm or egg cell) with a single set of chromosomes combines with another gamete to p ...

, and grow from a hollow sphere of cells, the

blastula Blastulation is the stage in early animal embryonic development that produces the blastula. In mammalian development, the blastula develops into the blastocyst with a differentiated inner cell mass and an outer trophectoderm. The blastula (fr ...

, during

embryonic development In developmental biology, animal embryonic development, also known as animal embryogenesis, is the developmental stage of an animal embryo. Embryonic development starts with the fertilization of an egg cell (ovum) by a sperm, sperm cell (spermat ...

. Over 1.5 million

living Living or The Living may refer to: Common meanings *Life, a condition that distinguishes organisms from inorganic objects and dead organisms ** Living species, one that is not extinct *Personal life, the course of an individual human's life * ...

animal species have been described—of which around 1 million are

insects Insects (from Latin ') are hexapod invertebrates of the class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body (head, thorax and abdomen), three pairs of jointed ...

—but it has been estimated there are over 7 million in total. Animals range in size from 8.5 millionths of a metre to long and have complex interactions with each other and their environments, forming intricate

food web A food web is the natural interconnection of food chains and a graphical representation of what-eats-what in an ecological community. Position in the food web, or trophic level, is used in ecology to broadly classify organisms as autotrophs or he ...

s. The study of animals is called

zoology Zoology ( , ) is the scientific study of animals. Its studies include the anatomy, structure, embryology, Biological classification, classification, Ethology, habits, and distribution of all animals, both living and extinction, extinct, and ...

. Animals may be listed or indexed by many criteria, including

taxonomy image:Hierarchical clustering diagram.png, 280px, Generalized scheme of taxonomy Taxonomy is a practice and science concerned with classification or categorization. Typically, there are two parts to it: the development of an underlying scheme o ...

, status as

endangered species An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction. Endangered species may be at risk due to factors such as habitat loss, poaching, inv ...

, their geographical location, and their portrayal and/or naming in human culture.

By common name

List of animal names In the English language, many animals have different names depending on whether they are male, female, young, domesticated, or in groups. The best-known source of many English words used for collective groupings of animals is ''Book of St. Alba ...

(male, female, young, and group)

By aspect

* List of common household pests * List of animal sounds * List of animals by number of legs *

List of animals by number of neurons The following are two lists of animals ordered by the size of their nervous system. The first list shows number of neurons in their entire nervous system. The second list shows the number of neurons in the structure that has been found to be rep ...

Largest and heaviest animals The largest animal currently alive is the blue whale. The maximum recorded weight was 190 tonnes (209 US tons) for a specimen measuring , whereas longer ones, up to , have been recorded but not weighed.Wood, Gerald ''The Guinness Book of Animal F ...

By domestication

List of domesticated animals This page gives a list of domesticated animals, also including a list of domestication of animals, animals which are or may be currently undergoing the process of domestication and animals that have an extensive relationship with humans beyond simp ...

By eating behaviour

* List of herbivorous animals * List of omnivores * List of carnivores

By endangered status

IUCN Red List endangered species (Animalia) On 19 August 2018, the IUCN Red List of Threatened Species identified 4584 endangered species, subspecies, stocks and subpopulations. Annelida Clitellata Megadrilaceae = Megascolecidae= = Moniligastridae= Opisthopora = Octochaetidae= A ...

** United States Fish and Wildlife Service list of endangered species

By extinction

List of extinct animals * List of extinct birds * List of extinct mammals ** List of extinct cetaceans * List of extinct butterflies

By region

* Lists of amphibians by region * Lists of birds by region *

Lists of mammals by region Lists of mammals by region cover mammals found in different parts of the world. They are organized by continent, region, and country, and in some places by sub-national region. Most are full species lists, while those for Australia and the Caribbea ...

Lists of reptiles by region A list is a set of discrete items of information collected and set forth in some format for utility, entertainment, or other purposes. A list may be memorialized in any number of ways, including existing only in the mind of the list-maker, bu ...

By individual (real or fictional)

Real

List of individual cats This is a list of individual cats who have achieved some degree of popularity or notability. Before the modern era * Nedjem or Nojem (Egyptian language, Egyptian: ''nḏm'' "Sweet One" or "Sweetie"), 15th century BC. The cat of Puimre, second p ...

** List of longest-living cats * List of giant squids *

List of individual elephants The following is a list of culturally or scientifically notable elephants. Actors * Chirakkal Kalidasan, one of the tallest elephants in Kerala, also notable for acting in some films, including the 2017 epic film, ''Baahubali 2: The Conc ...

* List of historical horses ** List of leading Thoroughbred racehorses * List of individual apes *

List of individual bears The following is a list of individual bears ( other than individual giant pandas) which garnered national or worldwide attention: Actors * Bart the Bear, a male Alaskan Kodiak bear, played the leading role in the 1988 wilderness drama, '' The Be ...

List of giant pandas This is a partial list of giant pandas, both alive and deceased. The giant panda is a conservation-reliant species, conservation-reliant vulnerable species. Wild population estimates of the bear vary; one estimate shows that there are about 1,590 ...

List of individual birds This is a list of well-known real birds. For famous fictional birds, see list of fictional birds. * Águia Vitória, a bald eagle who serves as the mascot for Portuguese football club S.L. Benfica * Alex (parrot), Alex, a grey parrot wh ...

* List of individual bovines *

List of individual cetaceans Cetaceans are the animals commonly known as whales, dolphins, and porpoises. This list includes individuals from real life or fiction, where fictional individuals are indicated by their source. It is arranged roughly taxonomy (biology), taxonomic ...

List of individual dogs The following is a list of individual dogs. Actors Advertising * Alex the dog, Banjo, portrayed Carlos, an Irish Setter-Golden Retriever mix and star of Stroh Brewery Company, Stroh's beer advertising in the 1980s. Also mentioned in the 1 ...

** List of longest-living dogs * List of individual hippopotamids * List of individual monkeys * List of individual pigs * List of wolves * List of wealthiest animals

Fictional

* List of fictional arthropods *

List of fictional bears This is a list of fictional bears that appear in video games, film, television, animation, comics and literature. This also includes pandas, but not the unrelated red panda species. The list is limited to notable, named characters. This list is a ...

List of fictional birds This list of fictional birds is subsidiary to the list of fictional animals. Ducks, penguins and birds of prey are not included here, and are listed separately at List of fictional ducks, List of fictional penguins, and List of fictional birds o ...

** List of fictional penguins *

List of fictional dogs This list of fictional dogs is subsidiary to the list of fictional animals. It is restricted to notable dog characters from the world of fiction. For real/famous dogs, see List of individual dogs, List of dogs. For mythological dogs, see :Mytholo ...

** List of fictional wolves * List of fictional felines ** List of fictional big cats * List of fictional frogs and toads * List of fictional horses *

List of fictional pachyderms This list of fictional pachyderms is a subsidiary to the List of fictional ungulates. Characters from various fictional works are organized by medium. Outside strict biological classification, the term " pachyderm" is commonly used to describe ...

List of fictional pigs This article contains a list of pigs in various categories of fiction, including pigs and warthogs. Advertising mascots and Animatronics * Madame Oink, an early guest star at Chuck E. Cheese's, Chuck E. Cheese's Pizza Time Theatre. She spoke in ...

* List of fictional primates * List of fictional snakes * List of fictional turtles * List of fictional worms

By taxonomical classification

Phyla

The animal Kingdom contains some 35 extant phyla.

Basal animals Marine life, sea life or ocean life is the collective ecological communities that encompass all aquatic animals, aquatic plant, plants, algae, marine fungi, fungi, marine protists, protists, single-celled marine microorganisms, microorganisms ...

are delineated according to the following

cladogram A cladogram (from Greek language, Greek ''clados'' "branch" and ''gramma'' "character") is a diagram used in cladistics to show relations among organisms. A cladogram is not, however, an Phylogenetic tree, evolutionary tree because it does not s ...

Porifera Sponges or sea sponges are primarily marine invertebrates of the animal phylum Porifera (; meaning 'pore bearer'), a Basal (phylogenetics) , basal clade and a sister taxon of the Eumetazoa , diploblasts. They are sessility (motility) , sessile ...

Diploblast Diploblasty is a condition of the blastula in which there are two primary germ layers: the ectoderm and endoderm. Diploblastic organisms are organisms which develop from such a blastula, and include Cnidaria and Ctenophora, formerly grouped t ...

Ctenophora Ctenophora (; : ctenophore ) is a phylum of marine invertebrates, commonly known as comb jellies, that inhabit sea waters worldwide. They are notable for the groups of cilia they use for swimming (commonly referred to as "combs"), and they are ...

ParaHoxozoa ParaHoxozoa (or Parahoxozoa) is a clade of animals that consists of Bilateria, Placozoa, and Cnidaria. Phylogeny The relationship of Parahoxozoa relative to the two other animal lineages Ctenophora and Porifera is debated. Some phylogenomic ...

Placozoa Placozoa ( ; ) is a phylum of free-living (non-parasitic) marine invertebrates. They are blob-like animals composed of aggregations of cells. Moving in water by ciliary motion, eating food by Phagocytosis, engulfment, reproducing by Fission (biol ...

Cnidaria Cnidaria ( ) is a phylum under kingdom Animalia containing over 11,000 species of aquatic invertebrates found both in fresh water, freshwater and marine environments (predominantly the latter), including jellyfish, hydroid (zoology), hydroids, ...

Bilateria Bilateria () is a large clade of animals characterised by bilateral symmetry during embryonic development. This means their body plans are laid around a longitudinal axis with a front (or "head") and a rear (or "tail") end, as well as a left� ...

Triploblast Triploblasty is a condition of the gastrula in which there are three primary germ layers: the ectoderm, mesoderm, and endoderm. Germ cells are set aside in the embryo at the blastula stage, and are incorporated into the gonads during organogenes ...

Xenacoelomorpha Xenacoelomorpha () is a small phylum of bilaterian invertebrate animals, consisting of two sister groups: xenoturbellids and acoelomorphs. This new phylum was named in February 2011 and suggested based on morphological synapomorphies (physica ...

Nephrozoa Nephrozoa is a proposed major clade of bilaterian animals. Under this hypothesis, Xenacoelomorpha forms the earliest diverging branch of Bilateria, with all other bilaterians placed in Nephrozoa. It contrasts with the Xenambulacraria hypothesis, ...

Protostome Protostomia () is the clade of animals once thought to be characterized by the formation of the organism's mouth before its anus during embryonic development. This nature has since been discovered to be extremely variable among Protostomia's memb ...

Deuterostome Deuterostomes (from Greek: ) are bilaterian animals of the superphylum Deuterostomia (), typically characterized by their anus forming before the mouth during embryonic development. Deuterostomia comprises three phyla: Chordata, Echinodermata, ...

s * Phylum

Proarticulata Proarticulata is a proposed phylum of extinct, near-bilaterally symmetrical animals known from fossils found in the Ediacaran (Vendian) marine deposits, and dates to approximately . The name comes from the Greek () = "before" and Articulata, i. ...

† Disputed if this is in or out of Bilateria and Phylum

is basal

Superphylum
Deuterostomia Deuterostomes (from Ancient Greek, Greek: ) are bilaterian animals of the superphylum Deuterostomia (), typically characterized by their anus forming before the mouth during embryogenesis, embryonic development. Deuterostomia comprises three Phyl ...

* Phylum

Chordata A chordate ( ) is a bilaterian animal belonging to the phylum Chordata ( ). All chordates possess, at some point during their larval or adult stages, five distinctive physical characteristics (Apomorphy and synapomorphy, synapomorphies) th ...

Ambulacraria Ambulacraria , or Coelomopora , is a clade of invertebrate phyla that includes echinoderms and hemichordates; a member of this group is called an ambulacrarian. Phylogenetic analysis suggests the echinoderms and hemichordates separated around ...

** Phylum

Hemichordata Hemichordata ( ) is a phylum which consists of triploblastic, eucoelomate, and bilaterally symmetrical marine deuterostome animals, generally considered the sister group of the echinoderms. They appear in the Lower or Middle Cambrian and incl ...

** Phylum

Echinoderm An echinoderm () is any animal of the phylum Echinodermata (), which includes starfish, brittle stars, sea urchins, sand dollars and sea cucumbers, as well as the sessile sea lilies or "stone lilies". While bilaterally symmetrical as ...

ata ** Phylum Cambroernida†

Protostomia Protostomia () is the clade of animals once thought to be characterized by the formation of the organism's mouth before its anus during embryonic development. This nature has since been discovered to be extremely variable among Protostomia's memb ...

= Superphylum
Ecdysozoa Ecdysozoa () is a group of protostome animals, including Arthropoda (insects, chelicerates (including arachnids), crustaceans, and myriapods), Nematoda, and several smaller phylum (biology), phyla. The grouping of these animal phyla into a single ...

= * Phylum

Saccorhytida Saccorhytida is an extinct phylum of Cambrian animals possibly belonging to the superphylum Ecdysozoa. It contains three monotypic genera: its namesake '' Saccorhytus'', the dubious '' Clypecella'' and '' Beretella''. All three genera are found ...

?† *

Cycloneuralia Cycloneuralia is a proposed clade of ecdysozoan animals including the Scalidophora ( Kinorhynchans, Loriciferans, Priapulids), the Nematoida (nematodes, Nematomorphs), and the extinct Palaeoscolecida. It may be paraphyletic, or may be a si ...

Scalidophora Scalidophora is a group of marine pseudocoelomate ecdysozoans that was proposed on morphological grounds to unite three phyla: the Kinorhyncha, the Priapulida and the Loricifera. The three phyla have four characters in common — chitinous cuti ...

*** Phylum

Kinorhyncha Kinorhyncha (, ' "snout") is a phylum of small marine invertebrates that are widespread in mud or sand at all depths as part of the meiobenthos. They are commonly called mud dragons. Modern species are or less, but Cambrian forms could reac ...

*** Phylum

Loricifera Loricifera (from Latin, ''wikt:lorica, lorica'', corselet (armour) + ''ferre'', to bear) is a phylum of very small to microscopic marine cycloneuralian sediment-dwelling animals with 43 described species and approximately 100 more that hav ...

*** Phylum

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. The name of the phylum relates to the Greek god of fertilit ...

Nematoida Nematoida is a clade of pseudocoelomate free living or parasitic animals. It consists of phyla Nematoda and Nematomorpha. The two groups share a number of features in common; the presence of a cloaca in both sexes, aflagellate sperm, and a cuti ...

*** Phylum

Nematoda The nematodes ( or ; ; ), roundworms or eelworms constitute the phylum Nematoda. Species in the phylum inhabit a broad range of environments. Most species are free-living, feeding on microorganisms, but many are parasitism, parasitic. Parasitic ...

*** Phylum

Nematomorpha Nematomorpha (sometimes called Gordiacea, and commonly known as horsehair worms, hairsnakes, or Gordian worms) are a phylum of parasitoid animals superficially similar to nematode worms in morphology, hence the name. Most species range in size f ...

Panarthropoda Panarthropoda is a clade comprising the greatest diversity of animal groups. It contains the extant phyla Arthropoda (Euarthropoda), Tardigrada (water bears) and Onychophora (velvet worms), although the precise relationships among these remained ...

** Phylum

Onychophora Onychophora (from , , "claws"; and , , "to carry"), commonly known as velvet worms (for their velvety texture and somewhat wormlike appearance) or more ambiguously as peripatus (after the first described genus, ''Peripatus''), is a phylum of el ...

** Tactopoda *** Phylum

Tardigrada Tardigrades (), known colloquially as water bears or moss piglets, are a phylum of eight-legged Segmentation (biology), segmented micro-animals. They were first described by the German zoologist Johann August Ephraim Goeze in 1773, who calle ...

*** Phylum

Arthropoda Arthropods ( ) are invertebrates in the phylum Arthropoda. They possess an exoskeleton with a cuticle made of chitin, often mineralised with calcium carbonate, a body with differentiated ( metameric) segments, and paired jointed appendages. ...

=
Spiralia The Spiralia are a morphologically diverse clade of protostome animals, including within their number the molluscs, annelids, platyhelminths and other Taxon, taxa. The term ''Spiralia'' is applied to those phyla that exhibit canonical spiral clea ...

= * Gnathifera ** Phylum

Gnathostomulida Gnathostomulids, or jaw worms, are a small phylum of nearly microscopic marine animals. They inhabit sand and mud beneath shallow coastal waters and can survive in relatively anoxic environments. They were first recognised and described in 1956. ...

** Phylum Rotifera *

Mesozoa The Mesozoa are minuscule, worm-like parasites of marine invertebrates. Generally, these tiny, elusive creatures consist of a somatoderm (outer layer) of ciliated cells surrounding one or more reproductive cells. A 2017 study recovered Mesozoa ...

** Phylum

Dicyemida Dicyemida, also known as Rhombozoa, is a phylum of tiny parasites that live in the renal appendages of cephalopods. Taxonomy Classification is controversial. Traditionally, dicyemids have been grouped with the Orthonectida in the phylum Mes ...

** Phylum

Orthonectida Orthonectida () is a small phylum (biology), phylum of poorly known parasites of marine invertebrates that are among the simplest of multi-cellular organisms. Members of this phylum are known as orthonectids. Biology The adults, which are the se ...

* Rouphozoa ** Phylum

Gastrotricha The gastrotrichs (phylum Gastrotricha), common name, commonly referred to as hairybellies or hairybacks, are a group of Microscopic scale, microscopic (0.06–3.0 mm), cylindrical, acoelomate animals, and are widely distributed and abundant ...

** Phylum

Platyhelminthes Platyhelminthes (from the Greek πλατύ, ''platy'', meaning "flat" and ἕλμινς (root: ἑλμινθ-), ''helminth-'', meaning "worm") is a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates commonly called f ...

* Superphylum

Lophotrochozoa Lophotrochozoa (, "crest/wheel animals") is a clade of protostome animals within the Spiralia. The taxon was established as a monophyletic group based on molecular evidence. The clade includes animals like annelids, molluscs, bryozoans, and brach ...

** Phylum

Hyolitha Hyoliths are animals with small conical surface, conical Exoskeleton, shells, known from fossils from the Palaeozoic era. They are at least considered as being lophotrochozoan, and possibly being lophophorates, a group which includes the brachio ...

† ** Phylum

Annelida The annelids (), also known as the segmented worms, are animals that comprise the phylum Annelida (; ). The phylum contains over 22,000 extant species, including ragworms, earthworms, and leeches. The species exist in and have adapted to variou ...

** Phylum

Brachiopoda Brachiopods (), phylum (biology), phylum Brachiopoda, are a phylum of animals that have hard "valves" (shells) on the upper and lower surfaces, unlike the left and right arrangement in bivalve molluscs. Brachiopod valves are hinged at the rear e ...

** Phylum

Bryozoa Bryozoa (also known as the Polyzoa, Ectoprocta or commonly as moss animals) are a phylum of simple, aquatic animal, aquatic invertebrate animals, nearly all living in sedentary Colony (biology), colonies. Typically about long, they have a spe ...

** Phylum

Cycliophora ''Symbion'' is a genus of commensal aquatic animals, less than 0.5 mm wide, found living attached to the mouthparts of cold-water lobsters. They have sac-like bodies, and three distinctly different forms in different parts of their two-sta ...

** Phylum

Entoprocta Entoprocta (), or Kamptozoa , is a phylum (biology), phylum of mostly Sessility (zoology), sessile aquatic animals, ranging from long. Mature individuals are goblet-shaped, on relatively long stalks. They have a "crown" of solid tentacles whos ...

** Phylum

Mollusca Mollusca is a phylum of protostome, protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant taxon, extant species of molluscs are recognized, making it the second-largest animal phylum ...

** Phylum

Nemertea Nemertea is a phylum of animals also known as ribbon worms or proboscis worms, consisting of about 1300 known species. Most ribbon worms are very slim, usually only a few millimeters wide, although a few have relatively short but wide bodies. ...

** Phylum

Phoronida Phoronids ( taxonomic 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 ...

Chordata

* List of chordate orders

Fish

List of fish families This is a list of fish families sorted alphabetically by scientific name. There are 525 families in the list. __NOTOC__ A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - R - S - T - U - V - W - X - Y - Z - ...

* List of fish common names

Amphibians

List of amphibians Amphibians are ectothermic, tetrapod vertebrates of the class Amphibia. All living amphibians belong to the group Lissamphibia. They inhabit a wide variety of habitats, with most species living within terrestrial, fossorial, arboreal or fresh ...

Reptiles

List of reptiles Reptiles are tetrapod animals in the class Reptilia, comprising today's turtles, crocodilians, snakes, amphisbaenians, lizards, tuatara, and their extinct relatives. The study of these traditional reptile orders, historically combined with that ...

* List of ichthyosaur genera *

List of pterosaur genera This list of pterosaurs is a comprehensive listing of all Genus, genera that have ever been included in the order Pterosauria, excluding purely vernacular terms. The list includes all commonly accepted genera, but also genera that are now considere ...

* List of plesiosaur genera * List of dinosaur genera *

List of snakes List of snakes refers to a variety of different articles and different criteria. These are listed below. Lists General lists * General lists: ** ** ** List of snakes by common name ** List of snakes by scientific name Lists by special criter ...

* List of snake genera * List of boine species and subspecies * List of erycine species and subspecies *

List of pythonid species and subspecies This is a list of all extant Genus, genera, species, and subspecies of the snakes of the Family (biology), family Pythonidae, otherwise referred to as pythonids or true pythons. It follows the Taxonomy (biology)#Alpha and beta taxonomy, taxonomy c ...

* List of tropidophiid species and subspecies * List of uropeltid species and subspecies *

List of crotaline species and subspecies This is a list of all sure Genus, genera, species and subspecies of the Family (biology), subfamily Crotalinae, otherwise referred to as crotalines, pit vipers, or pitvipers, and including rattlesnakes ''Crotalus'' and ''Sistrurus''. This list fo ...

List of viperine species and subspecies This is a list of all Genus, genera, species and subspecies of the subfamily Viperinae, otherwise referred to as viperines, true vipers, pitless vipers or Old World vipers. It follows the taxonomy of McDiarmid et al. (1999)McDiarmid RW, Campbell JA ...

* List of anomalepidid species and subspecies * List of leptotyphlopid species and subspecies * List of typhlopid species and subspecies * List of Testudines families (tortoises, turtles and terrapins)

References

{{Reflist Animals

By common name

By aspect

By domestication

By eating behaviour

By endangered status

By extinction

By region

By individual (real or fictional)

Real

Fictional

By taxonomical classification

Phyla

Superphylum Deuterostomia Deuterostomes (from Ancient Greek, Greek: ) are bilaterian animals of the superphylum Deuterostomia (), typically characterized by their anus forming before the mouth during embryogenesis, embryonic development. Deuterostomia comprises three Phyl ...

Protostomia Protostomia () is the clade of animals once thought to be characterized by the formation of the organism's mouth before its anus during embryonic development. This nature has since been discovered to be extremely variable among Protostomia's memb ...

= Superphylum Ecdysozoa Ecdysozoa () is a group of protostome animals, including Arthropoda (insects, chelicerates (including arachnids), crustaceans, and myriapods), Nematoda, and several smaller phylum (biology), phyla. The grouping of these animal phyla into a single ...

= Spiralia The Spiralia are a morphologically diverse clade of protostome animals, including within their number the molluscs, annelids, platyhelminths and other Taxon, taxa. The term ''Spiralia'' is applied to those phyla that exhibit canonical spiral clea ...

Chordata

Fish

Amphibians

Reptiles

References

Superphylum
Deuterostomia Deuterostomes (from Ancient Greek, Greek: ) are bilaterian animals of the superphylum Deuterostomia (), typically characterized by their anus forming before the mouth during embryogenesis, embryonic development. Deuterostomia comprises three Phyl ...

= Superphylum
Ecdysozoa Ecdysozoa () is a group of protostome animals, including Arthropoda (insects, chelicerates (including arachnids), crustaceans, and myriapods), Nematoda, and several smaller phylum (biology), phyla. The grouping of these animal phyla into a single ...

=
Spiralia The Spiralia are a morphologically diverse clade of protostome animals, including within their number the molluscs, annelids, platyhelminths and other Taxon, taxa. The term ''Spiralia'' is applied to those phyla that exhibit canonical spiral clea ...