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Krumbeckiella
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Pteriomorphia
Order:
Pterioida
Suborder:
Pteriina
Superfamily:
Pteriacea
Family:
Pergamidiidae
Formal Genus Name and Reference:
Krumbeckiella ICHIKAWA, 1958, p. 196
Type Species:
Timoria timorensis Krumbeck, SD ICHIKAWA, 1958, p. 196
Images
(Click to enlarge in a new window)
Fig. C44,1, *K. timorensis (Krumвеск), 1 a, b, RV ext., RV hinge region int., X1 (487)"
Synonyms
Geographic Distribution
Timor
Age Range
Beginning Stage in Treatise Usage:
U.Trias.(Nor.)
Beginning International Stage:
Norian
Fraction Up In Beginning Stage:
0
Beginning Date:
227.3
Ending Stage in Treatise Usage:
U.Trias.(Nor.)
Ending International Stage:
Norian
Fraction Up In Ending Stage:
100
Ending Date:
205.74
Description
Almost equivalve, moderately inflated, obliquely ovate, longer than high, umbones narrow, more or less anteriorly placed, slightly protruding, prosogyrous, ligamental area of moderate breadth in each valve, mainly posterior to beak, ligamental pit fairly broad, oblique, anterior margin with deep sinus extending below ligamental area and giving rise to sharply margined lunule and earlike projection of hinge margin, lunule broader in RV than in LV, where its margin is affected by byssal gape, surface smooth, but loss of outer layers commonly exposes finely ribbed inner ostracum
References
Ichikawa, Koichiro, 1958, Zur Taxionomia und Phylogenie der triadschen "Pteriidae" (Lamellibranch.): Palaeontographica, v. 3, Abt. A, p. 131-212, pl. 21-24.
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Pteriomorphia
Order:
Pterioida
Suborder:
Pteriina
Superfamily:
Pteriacea
Family:
Pergamidiidae
Formal Genus Name and Reference:
Krumbeckiella ICHIKAWA, 1958, p. 196
Type Species:
Timoria timorensis Krumbeck, SD ICHIKAWA, 1958, p. 196
Images
(Click to enlarge in a new window)
Fig. C44,1, *K. timorensis (Krumвеск), 1 a, b, RV ext., RV hinge region int., X1 (487)"
Synonyms
Geographic Distribution
Timor
Age Range
Beginning Stage in Treatise Usage:
U.Trias.(Nor.)
Beginning International Stage:
Norian
Fraction Up In Beginning Stage:
0
Beginning Date:
227.3
Ending Stage in Treatise Usage:
U.Trias.(Nor.)
Ending International Stage:
Norian
Fraction Up In Ending Stage:
100
Ending Date:
205.74
Description
Almost equivalve, moderately inflated, obliquely ovate, longer than high, umbones narrow, more or less anteriorly placed, slightly protruding, prosogyrous, ligamental area of moderate breadth in each valve, mainly posterior to beak, ligamental pit fairly broad, oblique, anterior margin with deep sinus extending below ligamental area and giving rise to sharply margined lunule and earlike projection of hinge margin, lunule broader in RV than in LV, where its margin is affected by byssal gape, surface smooth, but loss of outer layers commonly exposes finely ribbed inner ostracum
References
Ichikawa, Koichiro, 1958, Zur Taxionomia und Phylogenie der triadschen "Pteriidae" (Lamellibranch.): Palaeontographica, v. 3, Abt. A, p. 131-212, pl. 21-24.