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Lepismatina
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferinida
Superfamily:
Pennospiriferinoidea
Family:
Lepismatinidae
Formal Genus Name and Reference:
Lepismatina WANG, 1955, p. 353
Type Species:
L. hsui, OD
Images
(Click to enlarge in a new window)
Fig. 1284, 2a-i. *L. hsui, Middle Triassic, China; a–e, holotype, ventral, dorsal, anterior, posterior, and lateral views, ×2 (new); f–i, transverse sections, approximately ×3 (Yang & Xu, 1966).
Synonyms
Costispiriferina
Geographic Distribution
China, Middle Triassic, western Tethys, Upper Triassic
Age Range
Beginning Stage in Treatise Usage:
Middle Triassic
Beginning International Stage:
Anisian
Fraction Up In Beginning Stage:
0
Beginning Date:
246.7
Ending Stage in Treatise Usage:
Upper Triassic
Ending International Stage:
Rhaetian
Fraction Up In Ending Stage:
100
Ending Date:
201.36
Description
Small, transversely subquadrate in outline, strongly inequivalved with high, subpyramidal ventral and low, weakly convex dorsal valves, ventral interarea high, flattened, apsacline to procline, maximum width at subangular cardinal extremities, fold and sulcus smooth, rounded, lateral slopes with few rounded plicae, microornament of regularly spaced, imbricate growth lamellae and fine, dense granules, dental adminicula moderately long, apically fused by callus to high long median septum, ctenophoridium short, broad, jugum complete with posteriorly directed process
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferinida
Superfamily:
Pennospiriferinoidea
Family:
Lepismatinidae
Formal Genus Name and Reference:
Lepismatina WANG, 1955, p. 353
Type Species:
L. hsui, OD
Images
(Click to enlarge in a new window)
Fig. 1284, 2a-i. *L. hsui, Middle Triassic, China; a–e, holotype, ventral, dorsal, anterior, posterior, and lateral views, ×2 (new); f–i, transverse sections, approximately ×3 (Yang & Xu, 1966).
Synonyms
Costispiriferina
Geographic Distribution
China, Middle Triassic, western Tethys, Upper Triassic
Age Range
Beginning Stage in Treatise Usage:
Middle Triassic
Beginning International Stage:
Anisian
Fraction Up In Beginning Stage:
0
Beginning Date:
246.7
Ending Stage in Treatise Usage:
Upper Triassic
Ending International Stage:
Rhaetian
Fraction Up In Ending Stage:
100
Ending Date:
201.36
Description
Small, transversely subquadrate in outline, strongly inequivalved with high, subpyramidal ventral and low, weakly convex dorsal valves, ventral interarea high, flattened, apsacline to procline, maximum width at subangular cardinal extremities, fold and sulcus smooth, rounded, lateral slopes with few rounded plicae, microornament of regularly spaced, imbricate growth lamellae and fine, dense granules, dental adminicula moderately long, apically fused by callus to high long median septum, ctenophoridium short, broad, jugum complete with posteriorly directed process