Welcome to the Treatise on Invertebrate Paleontology!
Please enter a genera name to retrieve more information.
Cassianella
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Pteriomorphia
Order:
Pterioida
Suborder:
Pteriina
Superfamily:
Pteriacea
Family:
Cassianellidae
Formal Genus Name and Reference:
Cassianella BEYRICH, 1862, p. 9
Type Species:
Avicula gryphaeata von MÜNSTER, 1836, p. 127, OD
Images
(Click to enlarge in a new window)
Fig. C43,4. C. beyrichi Bittner, U.Trias., S.Tyrol, 4a, LV ext., 4b, LV ligamental area with one pit, 4 c, valves in juxtaposition, ligamental areas with 2 pits, all X1 (58).
Synonyms
Geographic Distribution
cosmop.
Age Range
Beginning Stage in Treatise Usage:
Perm.(Guadalupian), Trias.
Beginning International Stage:
Roadian
Fraction Up In Beginning Stage:
0
Beginning Date:
274.37
Ending Stage in Treatise Usage:
Perm.(Guadalupian), Trias.
Ending International Stage:
Rhaetian
Fraction Up In Ending Stage:
100
Ending Date:
201.36
Description
through hinge margin, RV concave or flat, ligamental pits usually single but some duplicated, few short, transverse subumbonal hinge teeth present together with longitudinal lateral teeth, posterior ones elongate, anterior short, surface smooth or radially ribbed
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Pteriomorphia
Order:
Pterioida
Suborder:
Pteriina
Superfamily:
Pteriacea
Family:
Cassianellidae
Formal Genus Name and Reference:
Cassianella BEYRICH, 1862, p. 9
Type Species:
Avicula gryphaeata von MÜNSTER, 1836, p. 127, OD
Images
(Click to enlarge in a new window)
Fig. C43,4. C. beyrichi Bittner, U.Trias., S.Tyrol, 4a, LV ext., 4b, LV ligamental area with one pit, 4 c, valves in juxtaposition, ligamental areas with 2 pits, all X1 (58).
Synonyms
Geographic Distribution
cosmop.
Age Range
Beginning Stage in Treatise Usage:
Perm.(Guadalupian), Trias.
Beginning International Stage:
Roadian
Fraction Up In Beginning Stage:
0
Beginning Date:
274.37
Ending Stage in Treatise Usage:
Perm.(Guadalupian), Trias.
Ending International Stage:
Rhaetian
Fraction Up In Ending Stage:
100
Ending Date:
201.36
Description
through hinge margin, RV concave or flat, ligamental pits usually single but some duplicated, few short, transverse subumbonal hinge teeth present together with longitudinal lateral teeth, posterior ones elongate, anterior short, surface smooth or radially ribbed