Welcome to the Treatise on Invertebrate Paleontology!
Please enter a genera name to retrieve more information.
Prototoceras
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Ceratitida
Suborder:
Ceratitina
Superfamily:
Otocerataceae
Family:
Otoceratidae
Formal Genus Name and Reference:
Prototoceras SPATH, 1930
Type Species:
Ceratites trochoides АВІСН, 1878
Images
(Click to enlarge in a new window)
Fig. 162,5. *P. trochoides (Авісн), 5a-c, X1 (622*)
Synonyms
Geographic Distribution
Armenia
Age Range
Beginning Stage in Treatise Usage:
U.Perm.
Beginning International Stage:
Wuchiapingian
Fraction Up In Beginning Stage:
0
Beginning Date:
259.55
Ending Stage in Treatise Usage:
U.Perm.
Ending International Stage:
Changhsingian
Fraction Up In Ending Stage:
100
Ending Date:
251.9
Description
Like Otoceras but small, with fastigate venter and flared umbilical rim. Suture ceratitic and simpler
References
Spath, L. F., 1930, The Eotriassic invertebrate fauna of East Greenland: Meddel. om Grønland, Band 83, p. 1-90, pl. 1-12.
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Ceratitida
Suborder:
Ceratitina
Superfamily:
Otocerataceae
Family:
Otoceratidae
Formal Genus Name and Reference:
Prototoceras SPATH, 1930
Type Species:
Ceratites trochoides АВІСН, 1878
Images
(Click to enlarge in a new window)
Fig. 162,5. *P. trochoides (Авісн), 5a-c, X1 (622*)
Synonyms
Geographic Distribution
Armenia
Age Range
Beginning Stage in Treatise Usage:
U.Perm.
Beginning International Stage:
Wuchiapingian
Fraction Up In Beginning Stage:
0
Beginning Date:
259.55
Ending Stage in Treatise Usage:
U.Perm.
Ending International Stage:
Changhsingian
Fraction Up In Ending Stage:
100
Ending Date:
251.9
Description
Like Otoceras but small, with fastigate venter and flared umbilical rim. Suture ceratitic and simpler
References
Spath, L. F., 1930, The Eotriassic invertebrate fauna of East Greenland: Meddel. om Grønland, Band 83, p. 1-90, pl. 1-12.