Welcome to the Treatise on Invertebrate Paleontology!
Please enter a genera name to retrieve more information.
Pygmochonetes
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Chonetoidea
Family:
Anopliidae
Formal Genus Name and Reference:
Pygmochonetes Jing & HU, 1978, p. 111
Type Species:
P. jingxianensis, OD
Images
(Click to enlarge in a new window)
Fig. 251, 6a-c. *P. jingxianensis, Lower Permian, southern China, ventral valve exterior, ventral valve interior, dorsal valve internal mold, x3$ (Jing & Hu, 1978).
Synonyms
Geographic Distribution
southern China
Age Range
Beginning Stage in Treatise Usage:
Lower Permian
Beginning International Stage:
Asselian
Fraction Up In Beginning Stage:
0
Beginning Date:
298.89
Ending Stage in Treatise Usage:
Lower Permian
Ending International Stage:
Kungurian
Fraction Up In Ending Stage:
100
Ending Date:
274.37
Description
Shell small, subsemicircular, strongly concavoconvex, shell surface costellate, costellae bifurcating, intercalating laterally, spines orthomorph oblique, symmetrically arranged, ventral valve interior with low myophragm, radial rows of coarse endospines, dorsal valve interior with cardinal process pit, reduced breviseptum, at least one pair of accessory septa sometimes reaching anterior margin. Lower Permian: southern China.
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Chonetoidea
Family:
Anopliidae
Formal Genus Name and Reference:
Pygmochonetes Jing & HU, 1978, p. 111
Type Species:
P. jingxianensis, OD
Images
(Click to enlarge in a new window)
Fig. 251, 6a-c. *P. jingxianensis, Lower Permian, southern China, ventral valve exterior, ventral valve interior, dorsal valve internal mold, x3$ (Jing & Hu, 1978).
Synonyms
Geographic Distribution
southern China
Age Range
Beginning Stage in Treatise Usage:
Lower Permian
Beginning International Stage:
Asselian
Fraction Up In Beginning Stage:
0
Beginning Date:
298.89
Ending Stage in Treatise Usage:
Lower Permian
Ending International Stage:
Kungurian
Fraction Up In Ending Stage:
100
Ending Date:
274.37
Description
Shell small, subsemicircular, strongly concavoconvex, shell surface costellate, costellae bifurcating, intercalating laterally, spines orthomorph oblique, symmetrically arranged, ventral valve interior with low myophragm, radial rows of coarse endospines, dorsal valve interior with cardinal process pit, reduced breviseptum, at least one pair of accessory septa sometimes reaching anterior margin. Lower Permian: southern China.