{{Automatic taxobox | fossil_range = {{fossil range|Sinemurian|ref=<ref name="Sepkoski Ceph">{{cite journal | last = Sepkoski| first = Jack| title= Sepkoski's Online Genus Database| year = 2002| url = http://strata.geology.wisc.edu/jack/showgenera.php?taxon=231&rank=class| access-date = 2014-05-28 }}</ref>}} | image = | taxon = Crucilobiceras | authority = Buckman, 1920 | subdivision_ranks = Species | subdivision = *''C. cf. cheltiense'' *''C. densinodulum'' *''C. ornatilobatum'' }}
'''''Crucilobiceras''''' is an ammonoid cephalopod genus from the Lower Jurassic<ref name="Sepkoski Ceph">{{cite journal | last = Sepkoski| first = Jack| title= Sepkoski's Online Genus Database| year = 2002| url = http://strata.geology.wisc.edu/jack/showgenera.php?taxon=231&rank=class| access-date = 2014-05-28 }}</ref> belonging to the eoderoceratoidean family Eoderoceratidae. ''Cruciliboceras'' has an evolute shell, such that all whorls are well exposed, with persistent radial ribbing and with spines or tubercles on the outer, ventral, rim, and in some, tubercles in the inner, umbilical, rim. The genus ''Crucilobiceras'' is commonly found along the Jurassic Coast of England.
'''''Metaderoceras''''', named by Leonard Spath in 1925, is a jr. synonym for ''Crucilobiceras'' named by S.S. Buckman in 1920 according to Arkell ''et al.'', in the Treatise on Invertebrate Paleontology (1957).
==References== ;Notes {{Reflist}} ;Bibliography *Arkell ''et al.'', 1957. Mesozoic Ammonoidea, in Treatise on Invertebrate Paleontology, (Part L); Geological Soc. of America and University of Kansas press *Donovan, Callomon and Howarth 1981 Classification of the Jurassic Ammonitina; Systematics Association. [https://web.archive.org/web/20110716054651/http://rogov.zwz.ru/Donovan%2C%20Callomon%2C%201981_J%20Ammon.PDF]
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Category:Early Jurassic ammonites of Europe Category:Ammonites of Europe Category:Fossil taxa described in 1920 Category:Ammonitida genera Category:Eoderoceratoidea
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