''Cranioceras'' is an extinct

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...

artiodactyl The even-toed ungulates (Artiodactyla , ) are ungulates—hoofed animals—which bear weight equally on two (an even number) of their five toes: the third and fourth. The other three toes are either present, absent, vestigial, or pointing poster ...

from the

Miocene The Miocene ( ) is the first epoch (geology), geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and mea ...

to the

Pliocene The Pliocene ( ; also Pleiocene) is the epoch in the geologic time scale that extends from 5.333 million to 2.58United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territori ...

Sources

* After the Dinosaurs: The Age of Mammals (Life of the Past) by Donald R. Prothero * The Book of Life: An Illustrated History of the Evolution of Life on Earth, Second Edition by Stephen Jay Gould

External links

''Cranioceras''
in the

Paleobiology Database The Paleobiology Database is an online resource for information on the distribution and classification of fossil animals, plants, and microorganisms. History The Paleobiology Database (PBDB) originated in the NCEAS-funded Phanerozoic Marine Pale ...

Palaeomerycidae Prehistoric cervoids Miocene even-toed ungulates Prehistoric even-toed ungulate genera Miocene mammals of North America Pliocene even-toed ungulates Pliocene mammals of North America Barstovian Clarendonian Hemphillian Fossil taxa described in 1918 {{paleo-eventoedungulate-stub