Welcome to the Treatise on Invertebrate Paleontology!
Please enter a genera name to retrieve more information.
Tancredia
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Veneroida
Superfamily:
Tellinacea
Family:
Tancrediidae
Formal Genus Name and Reference:
Tancredia LYCETT, 1850, p. 407
Type Species:
T. donaciformis; SD MORRIS & LYCETT, 1855, p. 91
Images
(Click to enlarge in a new window)
Fig. E123,4a-e. *T . (T.) donaciformjs LYCETT, M.Jur.(Aalen.), France; 4a-e, LV ext., both valves dorsal, RV int., LV int. and into mold showing pallial line, all X1 (Benecke, 1905). --Fig. E123,4f,g. T. (T.) coxj CHAVAN, U.Jur.(U.Oxford.), France; 4f,g, RV int., LV int., X10 (Chavan, 1950)
Synonyms
Geographic Distribution
cosmop.
Age Range
Beginning Stage in Treatise Usage:
U.Trias.
Beginning International Stage:
Carnian
Fraction Up In Beginning Stage:
0
Beginning Date:
237
Ending Stage in Treatise Usage:
L.Cret.
Ending International Stage:
Albian
Fraction Up In Ending Stage:
100
Ending Date:
100.5
Description
Subtrigonal, with anterior end of shell tapering to more or less acute extremity, subequilateral to strongly inequilateral, posterior margins commonly gaping, adductor scars circular or oval, subequal, placed in rather dorsal position, pallial line remote from ventral margin, bending abruptly upward posteriorly
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Veneroida
Superfamily:
Tellinacea
Family:
Tancrediidae
Formal Genus Name and Reference:
Tancredia LYCETT, 1850, p. 407
Type Species:
T. donaciformis; SD MORRIS & LYCETT, 1855, p. 91
Images
(Click to enlarge in a new window)
Fig. E123,4a-e. *T . (T.) donaciformjs LYCETT, M.Jur.(Aalen.), France; 4a-e, LV ext., both valves dorsal, RV int., LV int. and into mold showing pallial line, all X1 (Benecke, 1905). --Fig. E123,4f,g. T. (T.) coxj CHAVAN, U.Jur.(U.Oxford.), France; 4f,g, RV int., LV int., X10 (Chavan, 1950)
Synonyms
Geographic Distribution
cosmop.
Age Range
Beginning Stage in Treatise Usage:
U.Trias.
Beginning International Stage:
Carnian
Fraction Up In Beginning Stage:
0
Beginning Date:
237
Ending Stage in Treatise Usage:
L.Cret.
Ending International Stage:
Albian
Fraction Up In Ending Stage:
100
Ending Date:
100.5
Description
Subtrigonal, with anterior end of shell tapering to more or less acute extremity, subequilateral to strongly inequilateral, posterior margins commonly gaping, adductor scars circular or oval, subequal, placed in rather dorsal position, pallial line remote from ventral margin, bending abruptly upward posteriorly