MammalQuaternary
Arctodus
The large Arctodus simus is interpreted as an omnivore, rather than an exclusive specialized hunter.
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Showing 121–144 of 578 creatures
Mammal
MammalNeogene / Quaternary
American mastodon
Its molars had ridges different from the tooth surfaces of elephants and mammoths.
Meet American mastodon
MammalQuaternary
Dire wolf
The largest collection of its fossils comes from the tar pits of Rancho La Brea in Los Angeles.
Meet Dire wolf
DinosaurCretaceous
Abelisaurus
It is known mainly from a skull, one of the discoveries that helped establish the abelisaurids as a distinct group.
Meet Abelisaurus
DinosaurJurassic
Aardonyx
It was found near Rosendal, in the South African province of the Free State.
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DinosaurCretaceous
Achillobator
Its robust body and strong legs differentiated it from lighter dromaeosaurids.
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DinosaurCretaceous
Achelousaurus
Its large head ended in a hooked beak.
Meet Achelousaurus
DinosaurJurassic
Agilisaurus
Its species name honors George Louderback, who studied fossils from Sichuan.
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DinosaurCretaceous
Alamosaurus
Some isolated bones indicate that certain individuals could reach enormous sizes.
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DinosaurCretaceous
Albertaceratops
Its remains were found in the Oldman Formation, in Alberta, Canada.
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DinosaurCretaceous
Alectrosaurus
Its elongated hind legs suggest a tyrannosauroid adapted to running.
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DinosaurJurassic
Anchiornis
Its fossils come from the Tiaojishan Formation of Liaoning, China.
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DinosaurCretaceous
Ampelosaurus
As well as a long neck and tail, it had bony plates in its skin, called osteoderms.
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DinosaurCretaceous
Anchiceratops
Its head combined two long horns above the eyes with another shorter one above the nose.
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DinosaurJurassic
Anchisaurus
Its hands had a large thumb that may have helped it feed.
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DinosaurCretaceous
Anserimimus
Its arms were longer than usual among ornithomimids.
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DinosaurCretaceous
Aquilops
The bony core of its beak curved downward and had a small forward protuberance.
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DinosaurCretaceous
Archaeoceratops
The genus includes the species Archaeoceratops oshimai and Archaeoceratops yujingziensis.
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DinosaurCretaceous
Arrhinoceratops
Its name came from the idea that it lacked a nasal horn; later studies corrected that interpretation.
Meet Arrhinoceratops
DinosaurCretaceous
Avimimus
Its first scientific description was published in 1981.
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DinosaurCretaceous
Avaceratops
A skull attributed to the genus preserves bone cores of horns measuring about 25 centimeters.
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DinosaurCretaceous
Bambiraptor
The small known specimen could be young, so its adult size is uncertain.
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DinosaurJurassic
Barapasaurus
Around 300 bones from at least six individuals are known, although important parts of the skull and neck are missing.
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DinosaurJurassic
Barosaurus
It shared the Morrison Formation with sauropods such as Diplodocus, Apatosaurus and Camarasaurus.
Meet BarosaurusEach card identifies its kind of creature. Fictional characters are labeled and have their own game stories. AI-generated, stylized game illustrations. These designs and growth stages are imaginative, not scientific reconstructions.