Acanthoclymenia Explained

Acanthoclymenia is genus of ammonoid cephalopods belonging to the Acanthoclymeniidae family. Species belonging to this genus lived in middle and late Devonian (upper Givetian - lower Frasnian). Its fossils were found in Europe, Asia, north Africa, North America and Australia. Species of this genus had discoidal shells with flattened venter.

Species and distribution

• Acanthoclymenia neapolitana Clarke, 1898: ca 383.7 - 376.1 mya of USA (New York) and Australia.
• Acanthoclymenia forcipifer Sandberger & Sandberger, 1851: ca 378.7 - 376.9 mya of Algeria, Germany, Great Britain Kazakhstan and China (Guangxi and Guizhou).
• Acanthoclymenia genundewa Clarke, 1899: ca 383.3 - 382.7 mya of USA (New York) and Poland.
• Acanthoclymenia planorbis Sandberger & Sandberger, 1851: ca 377.5 - 376.9 mya of USA (New York).

There were more finds of this genus, but without valid description:

• Acanthoclymenia aff. genundewa Clarke, 1898: ca 378.7 - 376.9 mya of USA (West Virginia) and Russia (Southern Timan).
• Acanthoclymenia aff. neapolitana Clarke, 1898: ca 383.7 - 376.1 mya of Australia.
• Acanthoclymenia n.sp. juv. Becker et al. 2000: ca 378.7 - 377.5 mya of Russia (Southern Timan).