Bifericeras
Bifericeras Temporal range: | |
---|---|
Scientific classification | |
Kingdom: | |
Phylum: | Mollusca |
Class: | |
Subclass: | |
Order: | |
Superfamily: | |
Family: | |
Genus: | Bifericeras Buckman, 1913 |
Species | |
|
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.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.