Editor’s note: “From the vault” features fossils and other dinosaur-related historical artifacts currently stored at Dinosaur Journey Museum in Fruita, Colo. Coryphodon, an extinct herbivore, once ...

Coryphodon (IMAGE) University of Colorado at Boulder Caption A hippo-like mammal known as Coryphodon was one of several ancient mammal groups that endured twilight winters in the high Arctic 53 ...

Flowering plants and hippo-like creatures once thrived in the Arctic, where the tundra and polar bears now prevail. New research, detailed in the June issue of the journal Geology, is shedding light ...

Researchers report the discovery of several sets of fossilized tracks, likely from the brown bear-sized Coryphodon, that represent the earliest known evidence of mammals gathering near an ocean. Today ...

I OBSERVE in your issue (vol. xvii. p. 340) a note by Prof. O. C. Marsh stating that I have included in the cast of the olfactory lobes of the brain of Coryphodon that of a part of the nasal cavity ...

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This media is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this work without contacting the Smithsonian. For more ...

An extensive set of fossilised footprints shows that prehistoric large mammals were gathering by the sea millions of years earlier than we thought. Anton Wroblewski at the University of Utah and ...