About: Brevicoceratidae   Sponge Permalink

An Entity of Type : owl:Thing, within Data Space : 134.155.108.49:8890 associated with source dataset(s)

The Brevicoceratidae, named by Flower, 1941, is a family of oncocerids that contains genera characterized by exogastric (or rarely endogastric) gyrocones, brevicones, and torticones (Sweet, 1964 K209) that tend to develop vestigial actinosiphonate deposits and subtriangular transverse sections. The Brevicoceratidae are derived from Oonoceras (Oncoceratidae) and range from the Middle Silurian to the Upper Devonian.

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  • Brevicoceratidae
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  • The Brevicoceratidae, named by Flower, 1941, is a family of oncocerids that contains genera characterized by exogastric (or rarely endogastric) gyrocones, brevicones, and torticones (Sweet, 1964 K209) that tend to develop vestigial actinosiphonate deposits and subtriangular transverse sections. The Brevicoceratidae are derived from Oonoceras (Oncoceratidae) and range from the Middle Silurian to the Upper Devonian.
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  • (Flower, 1941)
  • Brevicoceratidae
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  • Family
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  • Order
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  • Brevicoceratidae
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  • The Brevicoceratidae, named by Flower, 1941, is a family of oncocerids that contains genera characterized by exogastric (or rarely endogastric) gyrocones, brevicones, and torticones (Sweet, 1964 K209) that tend to develop vestigial actinosiphonate deposits and subtriangular transverse sections. The Brevicoceratidae are derived from Oonoceras (Oncoceratidae) and range from the Middle Silurian to the Upper Devonian. Brevicoceratidae is named for the Middle Devonian genus, Brevicoceras, from North America. All told there are some 17 named genera. The family begins with Oxgonioceras in the Middle Silurian, sole recognized representative of that time, and reaches its greatest diversity with 12 genera in the Middle Devonian. The Brevicoceratidae were reduced to four genera in the Upper Devonian, when they became extinct.
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