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Didymoceras

genus

Sensitive Classification

Fossils are sensitive in nature and should not be collected unless it is done legally and responsibly. Vertebrate fossils are illegal to collect on public lands.

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Didymoceras is an extinct genus of ammonite cephalopod from the Late Cretaceous epoch (approximately 76 Ma). It is one of the most bizarrely shaped genera, with a shell that spirals upwards into a loose, hooked tip. It is thought to have drifted in the water vertically, moving up and down. The generic name is Latin for "paired horns". Its taxonomic place is often in flux, being placed in either Turrilitidae, Nostoceratidae, or its own family, Didymoceratidae. Species included in the genus are the following: Didymoceras angulatum (Meek and Hayden, 1860) Didymoceras binodosum Kennedy and Cobban, 1993 Didymoceras californicum Anderson, 1958 Didymoceras cheyenense (Meek and Hayden, 1856) Didymoceras cheyennense (Meek and Hayden, 1856) Didymoceras cochleatus (Meek and Hayden, 1858) Didymoceras…