Alaskoceras
Extinct genus of molluscs
Alaskoceras is a genus of lower Ordovician coiled nautiloid cephalopods; the shell moderately expanded, ribbed, with a divergent living chamber; whorl section more broadly rounded ventrally than dorsally; siphuncle marginal at maturity, septal necks short, almost achoanitic; connecting rings thick, layered.
Alaskcoceras belongs to the Tarphycerida, and to the family Estonioceratidae. It was found in Alaska.
Sources and credits
This article is adapted from the Wikipedia article “Alaskoceras”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
Images, from Wikimedia Commons:
- Alaskoceras sewardi.jpg by Apokryltaros, CC BY-SA 4.0
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