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Leptaenopyxis
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Strophomenida
Superfamily:
Strophomenoidea
Family:
Rafinesquinidae
Formal Genus Name and Reference:
Leptaenopyxis Havlíček, 1963, p. 224, Yujiangia XU, 1991, p. 314
Type Species:
Leptaena bouei BARRANDE, 1848, p. 237, OD
Images
(Click to enlarge in a new window)
Fig. 153,2a–d. *L. (L.) bouei (BARRANDE ), Koneprusy Limestone, Pragian, Koneprusy, Czech Republic; a,b, dorsal, anterior views of conjoined valves, NM CF385, ×1; c, ventral internal mold, OMR VH 372b, ×1; d, dorsal internal mold, OMR VH 372a, ×1 (Havlícek, 1967).——Fig. 153,2e. L. (L.) intermedia (HOU & XIAN), Yukiang Formation, lower Emsian, Liujiang, Heng Xian County, southern Guangxi Province, China; dorsal view of conjoined valves, NIGP 87820, × 1 (Xu, 1991).
Synonyms
Yujiangia
Geographic Distribution
Europe, Asia
Age Range
Beginning Stage in Treatise Usage:
Devonian (Pragian)
Beginning International Stage:
Pragian
Fraction Up In Beginning Stage:
0
Beginning Date:
412.4
Ending Stage in Treatise Usage:
Devonian (Emsian)
Ending International Stage:
Emsian
Fraction Up In Ending Stage:
100
Ending Date:
394.3
Description
Transverse, subquadrate outline, concavoconvex profile with anterior margin usually concave, lateral margins raised ventrally above disc before dorsal geniculation, costellate ornament with well-developed rugae, short pseudodeltidium, chilidium, ventral muscle field subcircular, bounded by ridges, dorsal muscle field bounded by variably developed ridges, dorsal median septum usually present, diaphragm variable.
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Strophomenida
Superfamily:
Strophomenoidea
Family:
Rafinesquinidae
Formal Genus Name and Reference:
Leptaenopyxis Havlíček, 1963, p. 224, Yujiangia XU, 1991, p. 314
Type Species:
Leptaena bouei BARRANDE, 1848, p. 237, OD
Images
(Click to enlarge in a new window)
Fig. 153,2a–d. *L. (L.) bouei (BARRANDE ), Koneprusy Limestone, Pragian, Koneprusy, Czech Republic; a,b, dorsal, anterior views of conjoined valves, NM CF385, ×1; c, ventral internal mold, OMR VH 372b, ×1; d, dorsal internal mold, OMR VH 372a, ×1 (Havlícek, 1967).——Fig. 153,2e. L. (L.) intermedia (HOU & XIAN), Yukiang Formation, lower Emsian, Liujiang, Heng Xian County, southern Guangxi Province, China; dorsal view of conjoined valves, NIGP 87820, × 1 (Xu, 1991).
Synonyms
Yujiangia
Geographic Distribution
Europe, Asia
Age Range
Beginning Stage in Treatise Usage:
Devonian (Pragian)
Beginning International Stage:
Pragian
Fraction Up In Beginning Stage:
0
Beginning Date:
412.4
Ending Stage in Treatise Usage:
Devonian (Emsian)
Ending International Stage:
Emsian
Fraction Up In Ending Stage:
100
Ending Date:
394.3
Description
Transverse, subquadrate outline, concavoconvex profile with anterior margin usually concave, lateral margins raised ventrally above disc before dorsal geniculation, costellate ornament with well-developed rugae, short pseudodeltidium, chilidium, ventral muscle field subcircular, bounded by ridges, dorsal muscle field bounded by variably developed ridges, dorsal median septum usually present, diaphragm variable.