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Hoernesia
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Pteriomorphia
Order:
Pterioida
Suborder:
Pteriina
Superfamily:
Pteriacea
Family:
Bakevelliidae
Formal Genus Name and Reference:
Hoernesia LAUBE, 1866, p. 52
Type Species:
Mytulites socialis von Schlotheim, 1823, p. 112, SD TATE, 1868, p. 67
Images
(Click to enlarge in a new window)
Fig. C41,1. *H. socialis (von SchlothE1m), M.Trias., Ger., la-c, LV ext., RV ext., ant. teeth of LV, all X1 (Philippi, 1898), 1d, LV int. showing posterior tooth, X1 (Credner, 1851).
Synonyms
Geographic Distribution
Eu.-Asia
Age Range
Beginning Stage in Treatise Usage:
Trias.
Beginning International Stage:
Induan
Fraction Up In Beginning Stage:
0
Beginning Date:
251.9
Ending Stage in Treatise Usage:
M.Jur.
Ending International Stage:
Callovian
Fraction Up In Ending Stage:
100
Ending Date:
161.53
Description
Elongate-trapeziform, only slightly oblique, highly inequivalve, LV strongly convex, with broad, protruding umbonal region, RV feebly convex to concave, valve margins commonly not in single plane, anterior wing well defined
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Pteriomorphia
Order:
Pterioida
Suborder:
Pteriina
Superfamily:
Pteriacea
Family:
Bakevelliidae
Formal Genus Name and Reference:
Hoernesia LAUBE, 1866, p. 52
Type Species:
Mytulites socialis von Schlotheim, 1823, p. 112, SD TATE, 1868, p. 67
Images
(Click to enlarge in a new window)
Fig. C41,1. *H. socialis (von SchlothE1m), M.Trias., Ger., la-c, LV ext., RV ext., ant. teeth of LV, all X1 (Philippi, 1898), 1d, LV int. showing posterior tooth, X1 (Credner, 1851).
Synonyms
Geographic Distribution
Eu.-Asia
Age Range
Beginning Stage in Treatise Usage:
Trias.
Beginning International Stage:
Induan
Fraction Up In Beginning Stage:
0
Beginning Date:
251.9
Ending Stage in Treatise Usage:
M.Jur.
Ending International Stage:
Callovian
Fraction Up In Ending Stage:
100
Ending Date:
161.53
Description
Elongate-trapeziform, only slightly oblique, highly inequivalve, LV strongly convex, with broad, protruding umbonal region, RV feebly convex to concave, valve margins commonly not in single plane, anterior wing well defined