Euomphaloceras is an early Upper Cretaceous ammonite genus, (Cephalopoda, Ammonoidea), included in the Acanthoceratinae until established as the type genus for the Euomphaloceratinae by Cooper, 1978.
The shell is very evolute, all whorls exposed, and rather depressed, with prominent umbilical and ventrolateral tubercles on some or all main ribs. The Venter broad and flat with three rows of tubercles that are more numerous than the ventrolateral ones. May have shallow ventral constrictions. Derivation is from an evolute Acathoceras.
Referencesedit
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.
This Ammonitina-related article is a stub. You can help Wikipedia by expanding it.
euomphaloceras, early, upper, cretaceous, ammonite, genus, cephalopoda, ammonoidea, included, acanthoceratinae, until, established, type, genus, euomphaloceratinae, cooper, 1978, temporal, range, late, cenomanian, preꞒ, scientific, classification, domain, euka. Euomphaloceras is an early Upper Cretaceous ammonite genus Cephalopoda Ammonoidea included in the Acanthoceratinae until established as the type genus for the Euomphaloceratinae by Cooper 1978 EuomphalocerasTemporal range late Cenomanian PreꞒ Ꞓ O S D C P T J K Pg N Scientific classification Domain Eukaryota Kingdom Animalia Phylum Mollusca Class Cephalopoda Subclass Ammonoidea Order Ammonitida Family Acanthoceratidae Subfamily Euomphaloceratinae Genus EuomphalocerasSpath 1923 The shell is very evolute all whorls exposed and rather depressed with prominent umbilical and ventrolateral tubercles on some or all main ribs The Venter broad and flat with three rows of tubercles that are more numerous than the ventrolateral ones May have shallow ventral constrictions Derivation is from an evolute Acathoceras References editW J Arkell et al 1957 Mesozoic Ammonoidea Treatise on Invertebrate Paleontology Part L Mollusca 4 Geological Society of America and University of Kansas Press nbsp This Ammonitina related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Euomphaloceras amp oldid 1166001339, wikipedia, wiki, book, books, library,
