Class Sarcopterygii
(lobe-finned fishes and terrestrial vertebrates)

Confused by a class within a class or an order within an order? Please see our brief essay.

Scientific names for Aves taxonomy (family and below) are from The Howard and Moore Complete Checklist of the Birds of the World, Princeton University Press, copyright 2003. Used by permission.

• Parent taxa
  
  
  
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  Superclass Gnathostomata (jawed vertebrates)
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  Euteleostomi (bony vertebrates)
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  Class Sarcopterygii (lobe-finned fishes and terrestrial vertebrates)
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  Tetrapoda (tetrapods)
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  Amniota (amniotes)
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  Reptilia (reptiles)
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  Anapsida (tortoises and turtles)
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  Order Testudines (tortoises and turtles)
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  Diapsida (birds, crocodiles, lizards, snakes, and relatives)
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  Archosauria (birds and crocodiles)
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  Aves (birds)
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  Subclass Neognathae (neognath birds)
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  Infraclass Galloanserae (geese, ducks, quails, pheasants, and relatives)
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  Order Anseriformes (ducks, geese, swans, and relatives)
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  Order Galliformes (chicken-like birds)
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  Infraclass Neoaves (modern birds)
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  Family Scopidae (hamerkop)
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  Family Otididae (bustards)
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  Family Aegothelidae (owlet-frogmouths)
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  Order Caprimulgiformes (nightbirds)
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  Order Apodiformes (hummingbirds and swifts)
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  Order Balaenicipitiformes (shoebill or whale-headed stork)
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  Order Charadriiformes (shorebirds and relatives)
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  Order Ciconiiformes (storks and relatives)
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  Order Coliiformes (mousebirds)
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  Order Columbiformes (doves and pigeons)
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  Order Coraciiformes (kingfishers and relatives)
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  Order Cuculiformes (cuckoos and relatives)
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  Order Falconiformes (diurnal birds of prey)
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  Order Galbuliformes
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  Order Gaviiformes (loons)
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  Order Gruiformes (coots, cranes, and rails)
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  Order Mesitornithiformes (mesites)
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  Order Musophagiformes (turacos)
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  Order Opisthocomiformes (hoatzin)
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  Order Passeriformes (perching birds)
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  Order Pelecaniformes (pelicans, tropicbirds, cormorants, and relatives)
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  Order Phoenicopteriformes (flamingos)
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  Order Piciformes (woodpeckers and relatives)
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  Order Podicipediformes (grebes)
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  Order Procellariiformes (tube-nosed seabirds)
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  Order Psittaciformes (parrots)
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  Order Sphenisciformes (penguins)
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  Order Strigiformes (owls)
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  Order Trogoniformes (trogons)
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  Order Turniciformes (buttonquail)
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  Subclass Paleognathae (paleognath birds)
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  Order Struthioniformes (cassowaries, emus, kiwis, ostriches, and rheas)
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  Order Tinamiformes (tinamous)
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  Order Crocodilia (caimans, crocodiles, and relatives)
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  Lepidosauria (amphisbaenians, lizards, snakes, and tuataras)
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  Order Rhynchocephalia (tuataras)
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  Order Squamata (amphisbaenians, lizards, and snakes)
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  Synapsida (synapsids)
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  Mammalia (mammals)
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  Subclass Prototheria (egg-laying mammals)
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  Order Monotremata (monotremes)
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  Subclass Theria (Therian mammals)
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  Infraclass Eutheria (placental mammals)
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  Afrotheria (Afrotherian mammals)
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  Order Afrosoricida (tenrecs and golden moles)
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  Order Hyracoidea (hyraxes)
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  Order Macroscelidea (elephant-shrews)
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  Order Proboscidea (elephants)
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  Order Sirenia (dugongs, manatees, and sea cows)
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  Order Tubulidentata (aardvark)
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  Euarchontoglires (Euarchontoglirean mammals)
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  Order Dermoptera (flying lemurs)
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  Order Lagomorpha (hares, pikas, and rabbits)
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  Order Primates (primates)
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  Order Rodentia (rodents)
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  Order Scandentia (tree shrews)
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  Laurasiatheria (Laurasiatherian mammals)
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  Order Carnivora (carnivores)
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  Superorder Cetartiodactyla (cetaceans and artiodactyls)
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  Order Artiodactyla (even-toed ungulates)
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  Order Cetacea (dolphins, porpoises, and whales)
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  Order Chiroptera (bats)
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  Eulipotyphla (hedgehogs, shrews, and relatives)
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  Order Erinaceomorpha (gymnures and hedgehogs)
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  Order Soricomorpha (shrews, moles, desmans, and relatives)
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  Order Perissodactyla (horses, rhinoceroses, and tapirs)
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  Order Pholidota (pangolins)
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  Xenarthra (Xenarthrans)
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  Order Cingulata (armadillos)
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  Order Pilosa (sloths and anteaters)
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  Infraclass Metatheria (marsupial mammals)
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  Order Dasyuromorphia (dasyuroid marsupials and marsupial carnivores)
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  Order Didelphimorphia (American marsupials)
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  Order Diprotodontia (kangaroos, possums, wallabies, and relatives)
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  Order Microbiotheria (monito del monte)
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  Order Notoryctemorphia (marsupial moles)
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  Order Paucituberculata (shrew opossums)
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  Order Peramelemorphia (bandicoots and bilbies)
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  Early Therapsida (early therapsids)
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  Amphibia (amphibians)
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  Subclass Lissamphibia (amphibians)
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  Order Caudata (salamanders)
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  Order Gymnophiona (caecilians)
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  Superorder Salientia (frogs and toads)
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  Order Anura (frogs and toads)
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  Subclass Dipnoi (lungfishes)
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  Order Ceratodontiformes (Australian lungfish)
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  Order Lepidosireniformes
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  Actinistia
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  Order Coelacanthiformes (coelacanths)