Welcome to the Treatise on Invertebrate Paleontology!
Please enter a genera name to retrieve more information.
Pergamidia
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Pteriomorphia
Order:
Pterioida
Suborder:
Pteriina
Superfamily:
Pteriacea
Family:
Pergamidiidae
Formal Genus Name and Reference:
Pergamidia BITTNER, 1891, p. 103
Type Species:
*P. eumenea, SD DIENER, 1923, p. 135
Images
(Click to enlarge in a new window)
Fig. C44,2a,b. *P. eumenea, Anatolia, 2 a, b, RV ext. and hinge, X0.6 (56), Fig. C44, 2 c, d. P. attalea Bittner, Anatolia, 2 c, d, RV, side and ant. views showing byssal gape, X0.7 (Bittner, 1892), Fig. C44,2e. P. timorensis Krumbeck, Timor, LV hinge, X3 (487)
Synonyms
Geographic Distribution
Anatolia, Yunnan, 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
Equivalve, subovate, and not oblique or else mytiliform, higher than long, well inflated, with only slightly protruding, prosogyrous umbones, beaks terminally placed except for dorsoventrally extended anterior auricle well demarcated from body, byssal gape correspondingly extended, variable in width, ligamental area subinternal, extending to both sides of beak, ligamental pit triangular, broad, posterior to beak, surface with irregular concentric rugae, some species with narrow radial ribs on anterior region
References
Bittner, Alexander, 1891, Triaspetrefakten aus Balia in Kleinasien: K. K. Geol. Reichsanst. Wien, Jahrb., v. 41, p. 97-116, pl. 1-3.
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Pteriomorphia
Order:
Pterioida
Suborder:
Pteriina
Superfamily:
Pteriacea
Family:
Pergamidiidae
Formal Genus Name and Reference:
Pergamidia BITTNER, 1891, p. 103
Type Species:
*P. eumenea, SD DIENER, 1923, p. 135
Images
(Click to enlarge in a new window)
Fig. C44,2a,b. *P. eumenea, Anatolia, 2 a, b, RV ext. and hinge, X0.6 (56), Fig. C44, 2 c, d. P. attalea Bittner, Anatolia, 2 c, d, RV, side and ant. views showing byssal gape, X0.7 (Bittner, 1892), Fig. C44,2e. P. timorensis Krumbeck, Timor, LV hinge, X3 (487)
Synonyms
Geographic Distribution
Anatolia, Yunnan, 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
Equivalve, subovate, and not oblique or else mytiliform, higher than long, well inflated, with only slightly protruding, prosogyrous umbones, beaks terminally placed except for dorsoventrally extended anterior auricle well demarcated from body, byssal gape correspondingly extended, variable in width, ligamental area subinternal, extending to both sides of beak, ligamental pit triangular, broad, posterior to beak, surface with irregular concentric rugae, some species with narrow radial ribs on anterior region
References
Bittner, Alexander, 1891, Triaspetrefakten aus Balia in Kleinasien: K. K. Geol. Reichsanst. Wien, Jahrb., v. 41, p. 97-116, pl. 1-3.