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Parandiceras
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Ammonitida
Superfamily:
Perisphinctaceae
Family:
Neocomitidae
Formal Genus Name and Reference:
Parandiceras SPATH, 1939a, p. 76
Type Species:
P. rota, OD
Images
(Click to enlarge in a new window)
Fig. 36, 3a, b. *P. rota, Pakistan, X0.5 (Spath, 1939a)
Synonyms
Geographic Distribution
Pakistan, Argentina
Age Range
Beginning Stage in Treatise Usage:
Lower Cretaceous (Berriasian or Lower Valanginian)
Beginning International Stage:
Berriasian
Fraction Up In Beginning Stage:
0
Beginning Date:
143.1
Ending Stage in Treatise Usage:
Lower Cretaceous (Berriasian or Lower Valanginian)
Ending International Stage:
Valanginian
Fraction Up In Ending Stage:
45
Ending Date:
135.41
Description
Very evolute, compressed, ribs fine, simple or bifurcating at midside, ending in small ventrolateral tubercles bordering narrow venter with narrow groove, with shallow constrictions
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Ammonitida
Superfamily:
Perisphinctaceae
Family:
Neocomitidae
Formal Genus Name and Reference:
Parandiceras SPATH, 1939a, p. 76
Type Species:
P. rota, OD
Images
(Click to enlarge in a new window)
Fig. 36, 3a, b. *P. rota, Pakistan, X0.5 (Spath, 1939a)
Synonyms
Geographic Distribution
Pakistan, Argentina
Age Range
Beginning Stage in Treatise Usage:
Lower Cretaceous (Berriasian or Lower Valanginian)
Beginning International Stage:
Berriasian
Fraction Up In Beginning Stage:
0
Beginning Date:
143.1
Ending Stage in Treatise Usage:
Lower Cretaceous (Berriasian or Lower Valanginian)
Ending International Stage:
Valanginian
Fraction Up In Ending Stage:
45
Ending Date:
135.41
Description
Very evolute, compressed, ribs fine, simple or bifurcating at midside, ending in small ventrolateral tubercles bordering narrow venter with narrow groove, with shallow constrictions