Bifericeras
Sign in to saveBifericeras is a Lower Jurassic ammonite belonging to the family Eoderoceratidae, and sometimes placed in the subfamily Xipherceratinae. Whorls are strongly depressed, but still evolute in coiling. The early growth state is prolonged, and smooth, followed by a late growth stage with rounded, straight, bituberculate ribs.
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Encyclopedic overview
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- Biostratigraphic significance
- Distribution
- References
Bifericeras is a Lower Jurassic ammonite belonging to the family Eoderoceratidae, and sometimes placed in the subfamily Xipherceratinae. Whorls are strongly depressed, but still evolute in coiling. The early growth state is prolonged, and smooth, followed by a late growth stage with rounded, straight, bituberculate ribs.
Bifericeras was named by Buckman in 1913 and is found in Europe.
Excerpted from Wikipedia’s “Bifericeras” article, available under the CC BY-SA 4.0 licence.