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Cimomia
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Nautiloidea
Order:
Nautilida
Superfamily:
Nautilaceae
Family:
Hercoglossidae
Formal Genus Name and Reference:
Cimomia CONRAD, 1866
Type Species:
Nautilus burtini GALEOTTI, 1837, OD
Images
(Click to enlarge in a new window)
Fig. 336,3. C. vincenti Miller, Paleoc., Afr., x0.5 (226)
Synonyms
Nautilus (Javanoceras), Cymomia, Cymmomea, Cimonia
Geographic Distribution
cosmop.
Age Range
Beginning Stage in Treatise Usage:
U.Jur.
Beginning International Stage:
Oxfordian
Fraction Up In Beginning Stage:
0
Beginning Date:
161.53
Ending Stage in Treatise Usage:
Oligo.
Ending International Stage:
Chattian
Fraction Up In Ending Stage:
100
Ending Date:
23.04
Description
Subglobular to subdiscoidal, nautiliconic, whorls broadly rounded laterally and ventrally, umbilicus small, umbilical shoulders low, broadly rounded, surface smooth except for growth lines, suture with broad, shallow, rounded ventral saddle, broad, shallow lateral lobe, narrower and higher rounded lateral saddle near umbilical shoulder, and broad, rounded lobe on umbilical wall, siphuncle small, variable in position but never marginal
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Nautiloidea
Order:
Nautilida
Superfamily:
Nautilaceae
Family:
Hercoglossidae
Formal Genus Name and Reference:
Cimomia CONRAD, 1866
Type Species:
Nautilus burtini GALEOTTI, 1837, OD
Images
(Click to enlarge in a new window)
Fig. 336,3. C. vincenti Miller, Paleoc., Afr., x0.5 (226)
Synonyms
Nautilus (Javanoceras), Cymomia, Cymmomea, Cimonia
Geographic Distribution
cosmop.
Age Range
Beginning Stage in Treatise Usage:
U.Jur.
Beginning International Stage:
Oxfordian
Fraction Up In Beginning Stage:
0
Beginning Date:
161.53
Ending Stage in Treatise Usage:
Oligo.
Ending International Stage:
Chattian
Fraction Up In Ending Stage:
100
Ending Date:
23.04
Description
Subglobular to subdiscoidal, nautiliconic, whorls broadly rounded laterally and ventrally, umbilicus small, umbilical shoulders low, broadly rounded, surface smooth except for growth lines, suture with broad, shallow, rounded ventral saddle, broad, shallow lateral lobe, narrower and higher rounded lateral saddle near umbilical shoulder, and broad, rounded lobe on umbilical wall, siphuncle small, variable in position but never marginal