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Sirenites
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Ceratitida
Superfamily:
Clydonitaceae
Family:
Trachyceratidae
Formal Genus Name and Reference:
Sirenites MOJSISOVICS, 1893
Type Species:
Am. senticosus Dittmar, 1866, SD Hyatt & SMITH, 1905
Images
(Click to enlarge in a new window)
Fig. 190,9. *S. (S.) senticosus (Dittmar) Carn., Alps, 9a,b, x1 (292*)
Synonyms
Geographic Distribution
Alps, Sicily, Balkan, Himalaya, Timor, Alaska, B.C., Calif., ?Mex.
Age Range
Beginning Stage in Treatise Usage:
U.Trias.(Carn..)
Beginning International Stage:
Carnian
Fraction Up In Beginning Stage:
0
Beginning Date:
237
Ending Stage in Treatise Usage:
U.Trias.(Nor.)
Ending International Stage:
Norian
Fraction Up In Ending Stage:
100
Ending Date:
205.74
Description
Compressed, with distinct furrow on venter, whorl sides flattened-convex with sigmoidal ribs that bifurcate near ventrolateral edge on a tubercle and project sharply adorally, 2 rows of tubercles on whorl side, one on umbilical shoulder. Tubercles arranged in spiral lines. Suture ammonitic
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Ceratitida
Superfamily:
Clydonitaceae
Family:
Trachyceratidae
Formal Genus Name and Reference:
Sirenites MOJSISOVICS, 1893
Type Species:
Am. senticosus Dittmar, 1866, SD Hyatt & SMITH, 1905
Images
(Click to enlarge in a new window)
Fig. 190,9. *S. (S.) senticosus (Dittmar) Carn., Alps, 9a,b, x1 (292*)
Synonyms
Geographic Distribution
Alps, Sicily, Balkan, Himalaya, Timor, Alaska, B.C., Calif., ?Mex.
Age Range
Beginning Stage in Treatise Usage:
U.Trias.(Carn..)
Beginning International Stage:
Carnian
Fraction Up In Beginning Stage:
0
Beginning Date:
237
Ending Stage in Treatise Usage:
U.Trias.(Nor.)
Ending International Stage:
Norian
Fraction Up In Ending Stage:
100
Ending Date:
205.74
Description
Compressed, with distinct furrow on venter, whorl sides flattened-convex with sigmoidal ribs that bifurcate near ventrolateral edge on a tubercle and project sharply adorally, 2 rows of tubercles on whorl side, one on umbilical shoulder. Tubercles arranged in spiral lines. Suture ammonitic