Romaniceras
Genus of molluscs (fossil)
Romaniceras Temporal range: Late Cretaceous, Late Cenomanian - Late Turonian[1] PreꞒ Ꞓ O S D C P T J K Pg N | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Cephalopoda |
Subclass: | †Ammonoidea |
Order: | †Ammonitida |
Family: | †Acanthoceratidae |
Subfamily: | †Euomphaloceratinae |
Genus: | †Romaniceras Spath, 1923 |
Romaniceras is a genus of Upper Cretaceous ammonites in the Acanthoceratidae subfamily Euomphaloceratinae.[1]
The shell is rather evolute, whorl section circular to oval and Romaniceras differs from Acanthoceras in having 9 or 11 rows of tubercles, of which the ventrolateral may be clavate (i.e. elongate). The ribs of Romaniceras specimens are strong and fairly close spaced.[1][2]
References
- ^ a b c W.J. Arkell et al., 1957. Mesozoic Ammonoidea; Treatise on Invertebrate Paleontology, Part L, Mollusca 4. Geological Society of America and University of Kansas Press.
- ^ Spath, 1923
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