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Parathyrisina
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Athyridida
Superfamily:
Athyridoidea
Family:
Athyrididae
Formal Genus Name and Reference:
Parathyrisina Wang in Wang, Yu, & WU, 1974, p. 41
Type Species:
P. bella, OD, =Athyrisina tangnae HOU, 1963, p. 416
Images
(Click to enlarge in a new window)
Fig. 1022a-x. * P. tangnae (Hou), Guangxi, $a-d$, dorsal, ventral, lateral, and anterior views, NIGP 23624, x2$ (new), $e-x$, transverse serial sections 1.0, 2.1, 2.5, 2.9, 3.2, 3.5, 3.8, 4.3, 5.2, 5.8, 6.2, 7.25, 9.6, $10.5, 10.9, 11.3, 11.9, 12.3, 12.7, 14.5 \\mathrm{~mm}$ from ventral umbo, distance from ventral umbo to first section approximate (adapted from Wang & Rong, 1986).
Synonyms
Athyrisina, Athyrisinoides, Athyrisinoidea, Neoathyrisina
Geographic Distribution
northwestern China (western Qinling), southern China (Guangxi, Sichuan)
Age Range
Beginning Stage in Treatise Usage:
Lower Devonian (upper Pragian)
Beginning International Stage:
Pragian
Fraction Up In Beginning Stage:
50
Beginning Date:
411.46
Ending Stage in Treatise Usage:
Lower Devonian (lower Emsian)
Ending International Stage:
Emsian
Fraction Up In Ending Stage:
33
Ending Date:
405.16
Description
Small to medium, transverse subelliptical to subcircular outline, pedicle opening large, ventral sulcus and dorsal fold rounded, well developed, without radial elements, lateral slopes bearing 3 or more round costae, interior and jugum essentially as in Athyrisina
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Athyridida
Superfamily:
Athyridoidea
Family:
Athyrididae
Formal Genus Name and Reference:
Parathyrisina Wang in Wang, Yu, & WU, 1974, p. 41
Type Species:
P. bella, OD, =Athyrisina tangnae HOU, 1963, p. 416
Images
(Click to enlarge in a new window)
Fig. 1022a-x. * P. tangnae (Hou), Guangxi, $a-d$, dorsal, ventral, lateral, and anterior views, NIGP 23624, x2$ (new), $e-x$, transverse serial sections 1.0, 2.1, 2.5, 2.9, 3.2, 3.5, 3.8, 4.3, 5.2, 5.8, 6.2, 7.25, 9.6, $10.5, 10.9, 11.3, 11.9, 12.3, 12.7, 14.5 \\mathrm{~mm}$ from ventral umbo, distance from ventral umbo to first section approximate (adapted from Wang & Rong, 1986).
Synonyms
Athyrisina, Athyrisinoides, Athyrisinoidea, Neoathyrisina
Geographic Distribution
northwestern China (western Qinling), southern China (Guangxi, Sichuan)
Age Range
Beginning Stage in Treatise Usage:
Lower Devonian (upper Pragian)
Beginning International Stage:
Pragian
Fraction Up In Beginning Stage:
50
Beginning Date:
411.46
Ending Stage in Treatise Usage:
Lower Devonian (lower Emsian)
Ending International Stage:
Emsian
Fraction Up In Ending Stage:
33
Ending Date:
405.16
Description
Small to medium, transverse subelliptical to subcircular outline, pedicle opening large, ventral sulcus and dorsal fold rounded, well developed, without radial elements, lateral slopes bearing 3 or more round costae, interior and jugum essentially as in Athyrisina