Animal Animals are multicellular, eukaryotic organisms in the biological kingdom Animalia. With few exceptions, animals consume organic material, breathe oxygen, are able to move, can reproduce sexually, and go through an ontogenetic stage ...

s are

multicellular A multicellular organism is an organism that consists of more than one cell, in contrast to unicellular organism. All species of animals, land plants and most fungi are multicellular, as are many algae, whereas a few organisms are partially ...

eukaryotic Eukaryotes () are organisms whose cells have a nucleus. All animals, plants, fungi, and many unicellular organisms, are Eukaryotes. They belong to the group of organisms Eukaryota or Eukarya, which is one of the three domains of life. Bacte ...

organisms in the

biological kingdom In biology, a kingdom is the second highest taxonomic rank, just below domain. Kingdoms are divided into smaller groups called phyla. Traditionally, some textbooks from the United States and Canada used a system of six kingdoms (Animalia, Plant ...

Animalia. With few exceptions, animals consume organic material, breathe oxygen, are able to move, reproduce sexually, 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 (fro ...

, during

embryonic development An embryo is an initial stage of development of a multicellular organism. In organisms that reproduce sexually, embryonic development is the part of the life cycle that begins just after fertilization of the female egg cell by the male sperm ...

. 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 * H ...

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

insects Insects (from Latin ') are pancrustacean 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 j ...

—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. Another name for food web is consumer-resource system. Ecologists can broadly lump all life forms into one o ...

s. The study of animals is called

zoology Zoology ()The pronunciation of zoology as is usually regarded as nonstandard, though it is not uncommon. is the branch of biology that studies the animal kingdom, including the structure, embryology, evolution, classification, habits, an ...

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

taxonomy Taxonomy is the practice and science of categorization or classification. A taxonomy (or taxonomical classification) is a scheme of classification, especially a hierarchical classification, in which things are organized into groups or types. ...

, 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 and inv ...

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

By common name

List of animal names In the English language, 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 ''The Book of Saint Al ...

(male, female, young, and group)

By aspect

List of common household pests This is a list of common household pests – undesired animals that have a history of living, invading, causing damage, eating human foods, acting as disease vectors or causing other harms in human habitation. Mammals *Mice ** Field mice ** Hous ...

* List of animal sounds *

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, indicating their overall neural complexity. The second list shows the number of neurons i ...

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 Herbivores are animals that eat plants. Herbivory is a form of consumption in which a heterotrophic organism consumes other organisms, principally autotrophsCampbell, N. A. (1996) ''Biology'' (4th edition) Benjamin Cummings, New York such as pl ...

List of omnivores An omnivore () is an animal that has the ability to eat and survive on both plant and animal matter. Obtaining energy and nutrients from plant and animal matter, omnivores digest carbohydrates, protein, fat, and fiber, and metabolize the nut ...

* 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= Arthropo ...

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

By extinction

List of extinct animals This page features lists of extinct species, organisms that have become extinct, either in the wild or completely disappeared from Earth. In actual theoretical practice, a species not definitely located in the wild in the last fifty years of cur ...

List of extinct birds Around 129 species of birds have become extinct since 1500, and the rate of extinction seems to be increasing. The situation is exemplified by Hawaii, where 30% of all known recently extinct bird taxa originally lived. Other areas, such as Gua ...

List of extinct mammals Recently extinct mammals are defined by the International Union for Conservation of Nature (IUCN) as any mammals that have become extinct since the year 1500 CE. Since then, roughly 80 mammal species have become extinct. Extinction of tax ...

** List of extinct cetaceans * List of extinct butterflies

By region

Lists of amphibians by region Lists of amphibians by region are lists of amphibians in a given continent, country or smaller region. Africa *Democratic Republic of the Congo *Ghana *Guinea-Bissau *Ivory Coast ** Daloa *Madagascar *Seychelles Asia *Bhutan *China **Hong Kon ...

Lists of birds by region The following are the regional bird lists by continent. For another list see :Lists of birds by location Africa Northern Africa * Algeria * Egypt * Libya * Morocco * Sudan * Tunisia * Western Sahara * Canary Islands (ES) * Ceuta (ES) * ...

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 The following are the regional reptiles lists by continent. Continent Africa *Canary Islands *Democratic Republic of the Congo *Egypt *Ghana *Lesotho *Madagascar *Morocco Asia *South Asia *Korean Peninsula *Afghanistan *China *India ** Kazira ...

By individual (real or fictional)

Real

List of individual cats This is a list of famous cats which achieved some degree of popularity either in their own right or by association with someone famous. Before the modern era * Nedjem or Nojem ( Egyptian: ''nḏm'' "Sweet One" or "Sweetie"), 15th century BC. The ...

List of oldest cats This is a list of the oldest cats in the world, listed by reported age, all of whom have attained the minimum age of 25 years. Aging in cats depends on breed, size and diet. Some of the ages reported here are approximate. Others are based on est ...

* List of giant squids *

List of individual elephants *Abul-Abbas, Charlemagne's elephant *Arjuna, lead elephant of the Mysore Dasara procession and carries the idol of the deity Chamundeshwari on the Golden Howdah *Balarama, preceded Arjuna (see above); Golden Howdah-carrier between 1999 and 2011 * ...

List of historical horses This list includes actual horses that exist in the historical record. For fictional horses, see: List of fictional horses. Racehorses A * Adios Butler: famous harness racer * Affirmed: U.S. Triple Crown winner (1978) * Ajax: 18 consecutive ...

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

List of individual bears The following is a list of individual bears 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 Bear''. Between 1980 and his death in 20 ...

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

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 * Albert Ross, an albatross believed to have bee ...

* List of individual bovines * List of individual cetaceans *

List of individual dogs This is a list of individual famous actual dogs; for famous dogs from fiction, see List of fictional dogs. Actors Advertising * Axelrod, Basset Hound, appeared in commercials and print ads for Flying "A" Service Station advertisements in ...

List of oldest dogs This is a list of the oldest verified dogs in the world, listed by age, all of whom have attained the minimum age of 20. Aging in dogs depends on breed, size and diet. Longest living dogs verified by age See also * List of oldest cats * Lis ...

List of individual monkeys This annotated list of individual monkeys includes monkeys who are in some way famous or notable. The list does not include notable apes, or fictional primates. Monkey actors * Binx - (white-headed capuchin) Appeared in '' Ace Ventura: Pet De ...

* List of individual pigs *

List of wealthiest animals The list of wealthiest animals in the world include animals that have inherited or earned over 1 million U.S. dollars. Through inheritance Animals are not legal persons and cannot directly own property. Animals typically "inherit" money thr ...

Fictional

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 bird ...

List of fictional cats A ''list'' is any set of items in a row. List or lists may also refer to: People * List (surname) Organizations * List College, an undergraduate division of the Jewish Theological Seminary of America * SC Germania List, German rugby unio ...

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 Pizza Time Theatre. She spoke in a thick French ac ...

By taxonomical classification

Phyla

The animal Kingdom contains some 35 extant phyla.

Basal animals Marine life, sea life, or ocean life is the plants, animals and other organisms that live in the salt water of seas or oceans, or the brackish water of coastal estuaries. At a fundamental level, marine life affects the nature of the planet. ...

are delineated according to the following

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

Porifera Sponges, the members of the phylum Porifera (; meaning 'pore bearer'), are a basal animal clade as a sister of the diploblasts. They are multicellular organisms that have bodies full of pores and channels allowing water to circulate through t ...

Diploblast Eumetazoa (), also known as diploblasts, Epitheliozoa, or Histozoa, are a proposed basal animal clade as a sister group of the Porifera (sponges). The basal eumetazoan clades are the Ctenophora and the ParaHoxozoa. Placozoa is now also seen ...

Ctenophora Ctenophora (; ctenophore ; ) comprise 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 ...

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

Placozoa The Placozoa are a basal form of marine free-living (non-parasitic) multicellular organism. They are the simplest in structure of all animals. Three genera have been found: the classical ''Trichoplax adhaerens'', '' Hoilungia hongkongensis'', a ...

Cnidaria Cnidaria () is a phylum under kingdom Animalia containing over 11,000 species of aquatic animals found both in freshwater and marine environments, predominantly the latter. Their distinguishing feature is cnidocytes, specialized cells that ...

Bilateria The Bilateria or bilaterians are animals with bilateral symmetry as an embryo, i.e. having a left and a right side that are mirror images of each other. This also means they have a head and a tail (anterior-posterior axis) as well as a belly and ...

/ Triploblast

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 (physical ...

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. Its sister clade is the Xenacoelomorpha. The Ambulacraria (conventionally deutero ...

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 me ...

Deuterostome Deuterostomia (; in Greek) are animals typically characterized by their anus forming before their mouth during embryonic development. The group's sister clade is Protostomia, animals whose digestive tract development is more varied. Some ...

s * Phylum

Proarticulata Proarticulata is a proposed phylum of extinct, 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.e. ...

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

is basal

Deuterostomia Deuterostomia (; in Greek) are animals typically characterized by their anus forming before their mouth during embryonic development. The group's sister clade is Protostomia, animals whose digestive tract development is more varied. Some exa ...

* Phylum

Chordata A chordate () is an animal of the phylum Chordata (). All chordates possess, at some point during their larval or adult stages, five synapomorphies, or primary physical characteristics, that distinguish them from all the other taxa. These fi ...

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 53 ...

(unranked) ** Phylum Hemichordata ** Phylum

Echinoderm An echinoderm () is any member of the phylum Echinodermata (). The adults are recognisable by their (usually five-point) radial symmetry, and include starfish, brittle stars, sea urchins, sand dollars, and sea cucumbers, as well as the ...

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 ...

=
Ecdysozoa Ecdysozoa () is a group of protostome animals, including Arthropoda ( insects, chelicerata, crustaceans, and myriapods), Nematoda, and several smaller phyla. They were first defined by Aguinaldo ''et al.'' in 1997, based mainly on phylogenetic ...

= * Phylum Saccorhytida? † *

Cycloneuralia Cycloneuralia is a clade of ecdysozoan animals including the Scalidophora (Kinorhynchans, Loriciferans, Priapulids) and the Nematoida (nematodes, Nematomorphs). It may be paraphyletic, or may be a sister group to Panarthropoda. Or perhaps Pa ...

(unranked) **

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. The three phyla have four characters in common — chitinous cu ...

(unranked) *** Phylum

Kinorhyncha Kinorhyncha ( grc, κινέω, kīnéō, I move, ' "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 also called mud dragons. Modern species are or less, ...

*** Phylum Loricifera *** Phylum Priapulida **

Nematoida Nematoida is a grouping of animals, including the roundworms The nematodes ( or grc-gre, Νηματώδη; la, Nematoda) or roundworms constitute the phylum Nematoda (also called Nemathelminthes), with plant-parasitic nematodes also known ...

(unranked) *** Phylum

Nematoda The nematodes ( or grc-gre, Νηματώδη; la, Nematoda) or roundworms constitute the phylum Nematoda (also called Nemathelminthes), with plant-parasitic nematodes also known as eelworms. They are a diverse animal phylum inhabiting a broa ...

*** 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 proposed animal clade containing the extant phyla Arthropoda, Tardigrada (water bears) and Onychophora (velvet worms). Panarthropods also include extinct marine legged worms known as lobopodians ("Lobopodia"), a paraphyletic ...

(unranked) ** Phylum

Onychophora Onychophora (from grc, ονυχής, , "claws"; and , , "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 ...

Tactopoda Tactopoda is a proposed clade of protostome animals that includes the phyla Tardigrada and Euarthropoda, supported by various morphological observations. The cladogram below shows the relationships implied by this hypothesis. The competing hyp ...

(unranked) *** Phylum

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

*** Phylum

Arthropoda Arthropods (, (gen. ποδός)) are invertebrate animals with an exoskeleton, a segmented body, and paired jointed appendages. Arthropods form the phylum Arthropoda. They are distinguished by their jointed limbs and cuticle made of chitin ...

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

= * Gnathifera ** Phylum Gnathostomulida ** 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 recent study recovered Mesoz ...

** 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 Mesozoa, ...

** Phylum Orthonectida * Rouphozoa ** Phylum Gastrotricha ** Phylum

Platyhelminthes The flatworms, flat worms, Platyhelminthes, or platyhelminths (from the Greek πλατύ, ''platy'', meaning "flat" and ἕλμινς (root: ἑλμινθ-), ''helminth-'', meaning "worm") are a phylum of relatively simple bilaterian, unsegm ...

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, bra ...

** Phylum Hyolitha † ** Phylum Annelida ** Phylum Brachiopoda ** Phylum

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

** 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 of mostly sessile aquatic animals, ranging from long. Mature individuals are goblet-shaped, on relatively long stalks. They have a "crown" of solid tentacles whose cilia generate water currents that ...

** Phylum

Mollusca Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is es ...

** Phylum

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

** Phylum Phoronida

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 This is a list of common names of fish. While some common names refer to a single species, others may be used for an entire group of species, such as a genus or family, and still others have been used confusingly for multiple unrelated species or ...

Amphibians

* List of amphibians

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 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 considered inval ...

List of plesiosaur genera This list of plesiosaurs is a comprehensive listing of all genera that have ever been included in the order Plesiosauria, excluding purely vernacular terms. The list includes all commonly accepted genera, but also genera that are now considered inv ...

List of dinosaur genera Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago, although the exact origin and timing of the evolution of dinosaurs is the subject o ...

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: ** Snake#Taxonomy ** List of reptile genera#Order Squamata **List of snakes by common name ** List of sn ...

* List of snake genera *

List of boine species and subspecies This is a list of all extant genera, species and subspecies of the snakes of the subfamily Boinae, otherwise referred to as boines or true boas. It follows the taxonomy currently provided by ITIS, which is based on the continuing work of Roy McDia ...

* List of erycine species and subspecies *

List of pythonid species and subspecies This is a list of all extant genera, species, and subspecies of the snakes of the family Pythonidae, otherwise referred to as pythonids or pythons. It follows the taxonomy currently provided by ITIS,which is based on the continuing work of Roy McD ...

* 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 genera, species and subspecies of the subfamily Crotalinae, otherwise referred to as crotalines, pit vipers, or pitvipers, and including rattlesnakes ''Crotalus'' and ''Sistrurus''. This list follows the taxonomy as of ...

* List of viperine species and subspecies * List of anomalepidid species and subspecies * List of leptotyphlopid species and subspecies *

List of typhlopid species and subspecies This is a list of all genera, species and subspecies of the family Typhlopidae, otherwise referred to as typical blind snakes, or typhlopids. It follows the taxonomy currently provided by ITIS, which is based on the continuing work of Dr. Roy McDi ...

List of Testudines families There are fourteen extant family (biology), families of the order (biology), order Testudines, an order of reptile. The testudines are some of the most ancient reptiles alive, with only the tuataras considered more primitive. There are approximatel ...

(tortoises, turtles and terrapins)

References

{{Reflist

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

Deuterostomia Deuterostomia (; in Greek) are animals typically characterized by their anus forming before their mouth during embryonic development. The group's sister clade is Protostomia, animals whose digestive tract development is more varied. Some exa ...

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 ...

= Ecdysozoa Ecdysozoa () is a group of protostome animals, including Arthropoda ( insects, chelicerata, crustaceans, and myriapods), Nematoda, and several smaller phyla. They were first defined by Aguinaldo ''et al.'' in 1997, based mainly on phylogenetic ...

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

Chordata

Fish

Amphibians

Reptiles

References

=
Ecdysozoa Ecdysozoa () is a group of protostome animals, including Arthropoda ( insects, chelicerata, crustaceans, and myriapods), Nematoda, and several smaller phyla. They were first defined by Aguinaldo ''et al.'' in 1997, based mainly on phylogenetic ...

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