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Myophoria
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Palaeoheterodonta
Order:
Trigonioida
Superfamily:
Trigoniacea
Family:
Myophoriidae
Formal Genus Name and Reference:
Myophoria Bronn in ALBERTI, 1834, p. 54
Type Species:
Trigonellites vulgaris von Schlotheim, 1820, p. 192, SD HERRMANNSEN, 1847, p. 80
Images
(Click to enlarge in a new window)
Fig. D63,1. *M. vulgaris (VON SCHLOTHE1M), M. Trias. (Muschelkalk), Ger.; la,b, RV ext. and int., X2; Ie, LV int., X2 (HohenstE1n, 1913)
Synonyms
Trigonellites, Cryptina, Trigonella, Miophoria
Geographic Distribution
Eu.-Asia-N.A
Age Range
Beginning Stage in Treatise Usage:
L.Trias.
Beginning International Stage:
Induan
Fraction Up In Beginning Stage:
0
Beginning Date:
251.9
Ending Stage in Treatise Usage:
U.Trias.
Ending International Stage:
Rhaetian
Fraction Up In Ending Stage:
100
Ending Date:
201.36
Description
Trigonally ovate, very inequilateral, diagonal or marginal carina pronounced; no escutch- eon; flank with one to few narrow radial ribs, impersistent in some specimens, with smooth, commonly shallowly concave interspaces; area smooth or with impersistent ribs; left valve with median tooth strong, simple or obscurely bifid, an- terior tooth moderately strong, marginal, and posterior tooth obscure; right valve with strong, triangular anterior tooth, bifid in some forms, but posterior tooth obscure; main teeth smooth or transversely striated, striation confined to umbonal end in some specimens; myophorous buttress well developed.
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Palaeoheterodonta
Order:
Trigonioida
Superfamily:
Trigoniacea
Family:
Myophoriidae
Formal Genus Name and Reference:
Myophoria Bronn in ALBERTI, 1834, p. 54
Type Species:
Trigonellites vulgaris von Schlotheim, 1820, p. 192, SD HERRMANNSEN, 1847, p. 80
Images
(Click to enlarge in a new window)
Fig. D63,1. *M. vulgaris (VON SCHLOTHE1M), M. Trias. (Muschelkalk), Ger.; la,b, RV ext. and int., X2; Ie, LV int., X2 (HohenstE1n, 1913)
Synonyms
Trigonellites, Cryptina, Trigonella, Miophoria
Geographic Distribution
Eu.-Asia-N.A
Age Range
Beginning Stage in Treatise Usage:
L.Trias.
Beginning International Stage:
Induan
Fraction Up In Beginning Stage:
0
Beginning Date:
251.9
Ending Stage in Treatise Usage:
U.Trias.
Ending International Stage:
Rhaetian
Fraction Up In Ending Stage:
100
Ending Date:
201.36
Description
Trigonally ovate, very inequilateral, diagonal or marginal carina pronounced; no escutch- eon; flank with one to few narrow radial ribs, impersistent in some specimens, with smooth, commonly shallowly concave interspaces; area smooth or with impersistent ribs; left valve with median tooth strong, simple or obscurely bifid, an- terior tooth moderately strong, marginal, and posterior tooth obscure; right valve with strong, triangular anterior tooth, bifid in some forms, but posterior tooth obscure; main teeth smooth or transversely striated, striation confined to umbonal end in some specimens; myophorous buttress well developed.