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Cenozoic


Paleocene

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​A gondwanathere that is found in the Australian Murgon deposits. Sudamericidae.
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A stem-litoptern that is found in the Australian Murgon deposits, having come from South America via Antarctica. Stem Litopterna.

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A relictual tritylodont therapsid, which survived through the end of the Cretaceous, evolving a specialized diet during the “fern spike”. Feeds entirely on ferns, much like a panda does on bamboo. Tritylodontidae.
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An extremely large species of Obdurodon, found in pre-glacial Antarctica. Obdurodon sp.

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Late-surviving enantiornithine. Enantiornithes.
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Eocene

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An early pangolin that lacks scales, is omnivorous like an armadillo, and still retains teeth. Pholidota.

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A relative of Kutchicetus that has a long, gharial-like snout with interlocking, needle-like teeth. Remingtonocetidae.

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A very primitive whippo that is terrestrial and more primitive than Indohyus. Stem Whippomorpha.
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A primitive basking shark, intermediate between other Lamniforms and the present species. Cetorhinidae. 
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A form transitional between other Orectolobiformes and whale sharks. Rhincodontidae.
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A “condylarth” which has evolved a specialized, tree-sloth-like lifestyle. “Condylarthra”.
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A species of primitive archeocete, descended from aquatic ancestors, which has become secondarily terrestrial after colonizing an island. Protocetidae novis.
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A Paleogene iguana from South America that rivals a Komodo Dragon in size. Iguanidae.

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A Messelasturid bird which has become a large jungle predator like an eagle in the Eocene rainforests. Messelasturidae.

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A durophagous relative of Dorudon which feeds mainly on shellfish that it plucks from the sea floor. Dorudontinae.
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An Adapiforme prosimian which is able to glide using large patagia between the limbs. Adapiformes.

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A large flighted Paleognath which has become a crane-like waterbird. Lithornithiformes.

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A large predatory tenrec which inhabited Madagascar before the arrival of feliform predators. Tenrecidae.
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Oligocene

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A small, tree-dwelling relative of Agriochoerus, which has a short face, and teeth adapted to eat coarse fruit and leaves. Agriochoeridae.
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An ancestral moa which still possesses visible wings. Dinornithiformes.
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A tiny relative of Hesperocyon, adapted to live in deserts, like a meerkat. Hesperocyoninae. 
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A primitive ostrich which has large claws on its wingtips for defence. Struthioniformes
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Miocene

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A kind of predatory skink with cutting, enlarged molariform teeth. Scincidae.
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A giant Miocene relative of the tapian, found in Australia, which reaches similar sizes to a King Cobra. Elapidae.

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A relictual, opossum-like marsupial that inhabits the harsh tundra and scrub of Antarctica, before the ice-caps have fully covered the continent. Australidelphia.
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An oversized heron adapted to feeding on terrestrial vertebrates, anything small enough to swallow. Ardeidae.
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A terrestrial Mekosuchine, inhabiting New Zealand as an apex predator. Mekosuchinae. 
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A giant, snakehead-like predatory Galaxiid, inhabiting New Zealand's waterways. ​Galaxiidae. 

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A relictual deep-sea Hybodont shark, which has survived into the Miocene since the Cretaceous. Hybodontidae.

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A desmostylian with large, walrus-like tusks used in fighting and sexual display. Desmostylia.
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A large, deep sea relative of Otodus. Otodontidae. 
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A relative of Hipparion, whose side toes have adapted into spurs for fighting. Hipparionini.
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A giant, reef-dwelling seahorse, maybe 50 centimetres long. Hippocampinae.

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Nimravid with clear adaptations towards a cheetah-like lifestyle. Nimravidae.

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A species of muntjac-like deer which squirts a noxious substance from its enlarged musk glands, as defense. Muntiacini.
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A fair-sized, South American land iguana with a tall head-casque much like that of a chameleon. Iguanidae.

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A relative of Dromornis which has a large, casque-like culmen at the top of its beak. Dromornithidae.
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A primitive sabre-toothed cat which hunts in the trees, much like a clouded leopard. Machairodontinae.

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A giant monitor inhabiting sub-saharan Africa, which is just as large and fearsome as a komodo dragon. Varanus sp.


Pliocene

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A nearly-flightless, cursorial ground hornbill, found near the rift valley of East Africa. Bucorvidae.

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A whale which is intermediate between primitive belugas and narwhals. Monodontidae.


Pleistocene

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A large, ape-like New-World monkey which has only a vestigial tail, and is quite adept on the ground, as well as in the trees. Atelidae.
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A long-legged hawk that is mostly flightless, and relies on chasing prey over the ground on its very long legs. Accipitridae.

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A dwarf rhinoceros found on some smaller Indonesian island which is less often part of Sunda Land. Rhinocerotidae.


Holocene

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A small semi-terrestrial crocodile found on Madagascar, which has large squamosal horns. Osteolaeminae.

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