Explore the prehistoric world

Prehistoric mammals

Small early relatives and unmistakable giants. Discover the extinct mammals and mammal relatives represented in Dinosgacha.

84creatures in this group
3 game stages each

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Meet the collection

Showing 49–72 of 84 creatures

Page 3 of 4

AI-generated Dinosgacha game illustration of Purgatorius, adult stage.

Mammal

Paleogene

Purgatorius

New findings led to a revision of the attribution of some teeth to the boundary between the Cretaceous and Paleocene.

Meet Purgatorius

AI-generated Dinosgacha game illustration of Eomaia, adult stage.

Mammal

Cretaceous

Eomaia

Its body features suggest it was adapted to climbing trees.

Meet Eomaia

AI-generated Dinosgacha game illustration of Repenomamus, adult stage.

Mammal

Cretaceous

Repenomamus

One specimen preserved remains of a baby Psittacosaurus inside its stomach.

Meet Repenomamus

AI-generated Dinosgacha game illustration of Castorocauda, adult stage.

Mammaliaform

Jurassic

Castorocauda

Its name refers to a "beaver tail."

Meet Castorocauda

AI-generated Dinosgacha game illustration of Docodon, adult stage.

Mammaliaform

Jurassic

Docodon

The complexity of its teeth suggests a varied diet.

Meet Docodon

AI-generated Dinosgacha game illustration of Morganucodon, adult stage.

Mammaliaform

Triassic / Jurassic

Morganucodon

Its skull was only about two or three centimeters long.

Meet Morganucodon

AI-generated Dinosgacha game illustration of Megazostrodon, adult stage.

Mammaliaform

Triassic / Jurassic

Megazostrodon

It was a tiny animal, with a long snout and specialized teeth.

Meet Megazostrodon

AI-generated Dinosgacha game illustration of Thylacine (Thylacinus cynocephalus), adult stage.

Mammal

Holocene · historic extinction

Thylacine

The thylacine was a marsupial.

Meet Thylacine

AI-generated Dinosgacha game illustration of Basilosaurus (Basilosaurus isis), adult stage.

Mammal

Late Eocene

Basilosaurus

Basilosaurus isis was an early whale with an extraordinarily long body and very small hind limbs.

Meet Basilosaurus

AI-generated Dinosgacha game illustration of Dorudon (Dorudon atrox), adult stage.

Mammal

Late Eocene

Dorudon

Dorudon atrox was a fully aquatic early whale with toothed jaws, flippers and tiny hind limbs.

Meet Dorudon

AI-generated Dinosgacha game illustration of Livyatan (Livyatan melvillei), adult stage.

Mammal

Miocene

Livyatan

Livyatan melvillei was a large predatory whale with a powerful skull and very large teeth.

Meet Livyatan

AI-generated Dinosgacha game illustration of Ambulocetus (Ambulocetus natans), adult stage.

Mammal

Eocene

Ambulocetus

Ambulocetus natans was an early whale relative with substantial limbs and large feet.

Meet Ambulocetus

AI-generated Dinosgacha game illustration of Odobenocetops (Odobenocetops peruvianus), adult stage.

Mammal

Neogene

Odobenocetops

Odobenocetops peruvianus was a toothed whale with an extraordinary walrus-like head.

Meet Odobenocetops

AI-generated Dinosgacha game illustration of Josephoartigasia (Josephoartigasia monesi), adult stage.

Mammal

Pliocene–Pleistocene

Josephoartigasia

Josephoartigasia monesi was a giant rodent with a substantial skull and large incisors.

Meet Josephoartigasia

AI-generated Dinosgacha game illustration of Nuralagus (Nuralagus rex), adult stage.

Mammal

Neogene

Nuralagus

Nuralagus rex was a large island rabbit with proportions unlike those of a modern hopping hare.

Meet Nuralagus

AI-generated Dinosgacha game illustration of Teleoceras (Teleoceras major), adult stage.

Mammal

Miocene

Teleoceras

Teleoceras was a short-legged rhinoceros with a deep barrel-shaped body.

Meet Teleoceras

AI-generated Dinosgacha game illustration of Eremotherium (Eremotherium laurillardi), adult stage.

Mammal

Pleistocene

Eremotherium

Eremotherium was a giant ground sloth with a massive body and powerful clawed forelimbs.

Meet Eremotherium

AI-generated Dinosgacha game illustration of Thalassocnus (Thalassocnus natans), adult stage.

Mammal

Miocene and Pliocene

Thalassocnus

Thalassocnus was a sloth associated with an increasingly aquatic way of life.

Meet Thalassocnus

AI-generated Dinosgacha game illustration of Simosthenurus (Simosthenurus occidentalis), adult stage.

Mammal

Pleistocene

Simosthenurus

Simosthenurus was a short-faced kangaroo with a robust body and a distinctive skull.

Meet Simosthenurus

AI-generated Dinosgacha game illustration of Palorchestes (Palorchestes azael), adult stage.

Mammal

Pleistocene

Palorchestes

Palorchestes was an unusual large marsupial with powerful forelimbs and a distinctive skull.

Meet Palorchestes

AI-generated Dinosgacha game illustration of Desmostylus (Desmostylus hesperus), adult stage.

Mammal

Miocene

Desmostylus

Desmostylus was an extinct mammal with remarkably column-like tooth cusps.

Meet Desmostylus

AI-generated Dinosgacha game illustration of Paleoparadoxia (Paleoparadoxia tabatai), adult stage.

Mammal

Miocene

Paleoparadoxia

Paleoparadoxia was a desmostylian mammal with a heavy body and unusual skeletal proportions.

Meet Paleoparadoxia

AI-generated Dinosgacha game illustration of Peltephilus (Peltephilus ferox), adult stage.

Mammal

Miocene

Peltephilus

Peltephilus was an armored mammal with a distinctive pair of horn-like structures on its skull.

Meet Peltephilus

AI-generated Dinosgacha game illustration of Machairodus (Machairodus aphanistus), adult stage.

Mammal

Miocene

Machairodus

Machairodus was a saber-toothed cat with elongated upper canines and a powerful predatory body.

Meet Machairodus

Read the introduction to prehistoric mammals →

AI-generated, stylized game illustrations. These designs and growth stages are imaginative, not scientific reconstructions. Open a profile for its fossil information and sources.