Welcome to the Treatise on Invertebrate Paleontology!
Please enter a genera name to retrieve more information.
Leptodus
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Lyttonioidea
Family:
Lyttoniidae
Formal Genus Name and Reference:
Leptodus KAYSER, 1883, p. 161
Type Species:
L. richthofeni, OD
Images
(Click to enlarge in a new window)
Fig. 455, 3a, b. *L. richthofeni, Upper Permian, Lo-Ping, China, $a$, ventral view of partly exfoliated ventral valve, $X_{1}, b$, tilted view of partly exfoliated ventral valve, x2$ (Cooper & Grant, 1974)., Fig. $455, 3 c, d$. L. nobilis Waagen, Upper Permian, Pakistan, $c$, ventral valve with attachment flap, x1, } d$, partly conjoined valves attached to species of Enteletes, X1 (Grant, 1976).
Synonyms
Lyttonia, Gubleria, Spinolyttonia, Juxoldhamina, Semigublerina
Geographic Distribution
Eurasia, USA (Texas), Australia
Age Range
Beginning Stage in Treatise Usage:
Permian
Beginning International Stage:
Asselian
Fraction Up In Beginning Stage:
0
Beginning Date:
298.89
Ending Stage in Treatise Usage:
Permian
Ending International Stage:
Changhsingian
Fraction Up In Ending Stage:
100
Ending Date:
251.9
Description
Ventral valve scoop shaped, normally transversely oval, attached by beak and everted posterior flap, septa in ventral interior arcuate, normally sharp, tending to vertical disposition, muscle scars large, bounded laterally by high, medianly concave ridges, dorsal adductor scars elongate and impressed well anterior of hinge region, bilobed cardinal process elongate narrow
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Lyttonioidea
Family:
Lyttoniidae
Formal Genus Name and Reference:
Leptodus KAYSER, 1883, p. 161
Type Species:
L. richthofeni, OD
Images
(Click to enlarge in a new window)
Fig. 455, 3a, b. *L. richthofeni, Upper Permian, Lo-Ping, China, $a$, ventral view of partly exfoliated ventral valve, $X_{1}, b$, tilted view of partly exfoliated ventral valve, x2$ (Cooper & Grant, 1974)., Fig. $455, 3 c, d$. L. nobilis Waagen, Upper Permian, Pakistan, $c$, ventral valve with attachment flap, x1, } d$, partly conjoined valves attached to species of Enteletes, X1 (Grant, 1976).
Synonyms
Lyttonia, Gubleria, Spinolyttonia, Juxoldhamina, Semigublerina
Geographic Distribution
Eurasia, USA (Texas), Australia
Age Range
Beginning Stage in Treatise Usage:
Permian
Beginning International Stage:
Asselian
Fraction Up In Beginning Stage:
0
Beginning Date:
298.89
Ending Stage in Treatise Usage:
Permian
Ending International Stage:
Changhsingian
Fraction Up In Ending Stage:
100
Ending Date:
251.9
Description
Ventral valve scoop shaped, normally transversely oval, attached by beak and everted posterior flap, septa in ventral interior arcuate, normally sharp, tending to vertical disposition, muscle scars large, bounded laterally by high, medianly concave ridges, dorsal adductor scars elongate and impressed well anterior of hinge region, bilobed cardinal process elongate narrow