Welcome to the Molluscs subsite on Invertebrate Paleontology!
Please enter a genera name to retrieve more information.
Omphalonema
Classification
Phylum:
Mollusca
Class:
Gastropoda
Subclass:
Prosobranchia
Order:
Archaeogastropoda
Suborder:
Trochina
Superfamily:
Platyceratacea
Family:
Holopeidae
Subfamily:
Gyronematinae
Formal Genus Name and Reference:
Omphalonema GRABAU, 1936
Type Species:
O. multispiralis
Images
(Click to enlarge in a new window)
Fig. 152,3. *O. multispirale, China, X1 (48)
Synonyms
Geographic Distribution
NE.Asia
Age Range
Beginning Stage in Treatise Usage:
L.Perm.
Beginning International Stage:
Asselian
Fraction Up In Beginning Stage:
0
Beginning Date:
298.89
Ending Stage in Treatise Usage:
L.Perm.
Ending International Stage:
Kungurian
Fraction Up In Ending Stage:
100
Ending Date:
274.37
Description
Seemingly without shoulder but with ornament much like Cinclidonema, apertural characters unknown
References
Grabau, A. W., 1936, Early Fermian fossils of China, Part 2, Fauna of the Maping Limestone of Kwangsi and Kweichow: Paleont. Sinica, ser. B, v. 8, fasc. 4, p. 1-441, pl. 1-31 (Peiping).
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Gastropoda
Subclass:
Prosobranchia
Order:
Archaeogastropoda
Suborder:
Trochina
Superfamily:
Platyceratacea
Family:
Holopeidae
Subfamily:
Gyronematinae
Formal Genus Name and Reference:
Omphalonema GRABAU, 1936
Type Species:
O. multispiralis
Images
(Click to enlarge in a new window)
Fig. 152,3. *O. multispirale, China, X1 (48)
Synonyms
Geographic Distribution
NE.Asia
Age Range
Beginning Stage in Treatise Usage:
L.Perm.
Beginning International Stage:
Asselian
Fraction Up In Beginning Stage:
0
Beginning Date:
298.89
Ending Stage in Treatise Usage:
L.Perm.
Ending International Stage:
Kungurian
Fraction Up In Ending Stage:
100
Ending Date:
274.37
Description
Seemingly without shoulder but with ornament much like Cinclidonema, apertural characters unknown
References
Grabau, A. W., 1936, Early Fermian fossils of China, Part 2, Fauna of the Maping Limestone of Kwangsi and Kweichow: Paleont. Sinica, ser. B, v. 8, fasc. 4, p. 1-441, pl. 1-31 (Peiping).