Marine reptileJurassic
Cryptoclidus
Its fine teeth suggest a diet of soft aquatic prey, such as fish and cephalopods.
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Showing 289–312 of 578 creatures
Marine reptile
Marine reptileJurassic
Liopleurodon
It was a marine reptile from the Jurassic, long before the last dinosaurs of the Cretaceous.
Meet Liopleurodon
Marine reptileCretaceous
Kronosaurus
Its name refers to Cronus, the titan of Greek mythology.
Meet Kronosaurus
Marine reptileJurassic
Ichthyosaurus
Mary Anning helped discover and bring attention to its fossils in nineteenth-century England.
Meet Ichthyosaurus
Marine reptileJurassic
Ophthalmosaurus
Its hydrodynamic body was reminiscent of that of a dolphin.
Meet Ophthalmosaurus
Marine reptileJurassic
Stenopterygius
The largest specimens reached approximately four meters in length.
Meet Stenopterygius
Marine reptileTriassic
Shonisaurus
Remains of numerous individuals have been found in the Luning Formation of Nevada.
Meet Shonisaurus
Marine reptileTriassic
Nothosaurus
Although its name means "false lizard", it was not a dinosaur.
Meet Nothosaurus
Marine reptileTriassic
Placodus
It inhabited warm seas of regions that today correspond to central Europe and China.
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ReptileTriassic
Tanystropheus
Some of its long bones were first thought to be part of a wing; they were later recognized as neck bones.
Meet Tanystropheus
SynapsidPermian
Dimetrodon
Many of its fossils come from the Red Beds of Texas and Oklahoma.
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SynapsidCarboniferous / Permian
Edaphosaurus
It ate plants, unlike its fellow sail-backed synapsid Dimetrodon.
Meet Edaphosaurus
SynapsidPermian
Cotylorhynchus
It was one of the large land vertebrates of its time.
Meet Cotylorhynchus
SynapsidPermian
Inostrancevia
It is known from several skulls and two nearly complete skeletons.
Meet Inostrancevia
SynapsidPermian
Estemmenosuchus
Its striking cranial protuberances could have been used for display between individuals.
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SynapsidPermian / Triassic
Lystrosaurus
It had two tusks and a tough, horn-covered beak suited to cutting plants.
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SynapsidPermian
Dicynodon
It had a tough, horn-covered beak and two tusks, which may have helped it dig up food.
Meet Dicynodon
ReptileTriassic
Postosuchus
It had a robust skeleton, a high skull and a long tail.
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ReptileTriassic
Desmatosuchus
It was one of the largest aetosaurs, with specimens measuring about five meters in length.
Meet Desmatosuchus
ReptileCretaceous
Sarcosuchus
Many skeletal parts are known, including bony plates, jaws and a nearly complete skull.
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ReptileCretaceous
Deinosuchus
Its fossils have been found both in the United States and in northern Mexico.
Meet Deinosuchus
ReptileCretaceous
Kaprosuchus
It is known from a nearly complete skull from Niger's Echkar Formation.
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ReptilePaleogene
Titanoboa
It is among the largest snakes discovered in the fossil record.
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AmphibianPermian
Prionosuchus
Its long snout and sharp teeth are reminiscent of those of a gharial, although it was an amphibian.
Meet PrionosuchusEach 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.