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Sibirites
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Ceratitida
Superfamily:
Noritaceae
Family:
Sibiritidae
Formal Genus Name and Reference:
Sibirites MOJSISOVICS, 1886
Type Species:
S. pretiosus
Images
(Click to enlarge in a new window)
Fig. 178,3. *S. pretiosus, 3a,b, x1 (294*)
Synonyms
Geographic Distribution
Sib.
Age Range
Beginning Stage in Treatise Usage:
L.Trias.(U.Scyth.)
Beginning International Stage:
Olenekian
Fraction Up In Beginning Stage:
0
Beginning Date:
249.88
Ending Stage in Treatise Usage:
L.Trias.(U.Scyth.)
Ending International Stage:
Olenekian
Fraction Up In Ending Stage:
100
Ending Date:
246.7
Description
Evolute, with subtabulate venter, whorl sides with sigmoidal ribs that thicken at ventral shoulders, ribs form adorally projected chevrons on venter, incompletely fused along mid-line. Suture ceratitic, with 2 lateral lobes.
References
Mojsisovics, E. V., 1886, Arktische Triasfaunen: Mem. Acad. Imp. Sci. Nat. St. Petersbourg, ser. 7, tome 33, p. 1-159, pl. 1-20.
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Ceratitida
Superfamily:
Noritaceae
Family:
Sibiritidae
Formal Genus Name and Reference:
Sibirites MOJSISOVICS, 1886
Type Species:
S. pretiosus
Images
(Click to enlarge in a new window)
Fig. 178,3. *S. pretiosus, 3a,b, x1 (294*)
Synonyms
Geographic Distribution
Sib.
Age Range
Beginning Stage in Treatise Usage:
L.Trias.(U.Scyth.)
Beginning International Stage:
Olenekian
Fraction Up In Beginning Stage:
0
Beginning Date:
249.88
Ending Stage in Treatise Usage:
L.Trias.(U.Scyth.)
Ending International Stage:
Olenekian
Fraction Up In Ending Stage:
100
Ending Date:
246.7
Description
Evolute, with subtabulate venter, whorl sides with sigmoidal ribs that thicken at ventral shoulders, ribs form adorally projected chevrons on venter, incompletely fused along mid-line. Suture ceratitic, with 2 lateral lobes.
References
Mojsisovics, E. V., 1886, Arktische Triasfaunen: Mem. Acad. Imp. Sci. Nat. St. Petersbourg, ser. 7, tome 33, p. 1-159, pl. 1-20.