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Neoretzia
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Athyridida
Superfamily:
Retzioidea
Family:
Neoretziidae
Formal Genus Name and Reference:
Neoretzia DAGYS, 1963, p. 130
Type Species:
Retzia superbescens Bittner, 1890, p. 281, OD, =Waldhemia superba Suess in DAVIDSON, 1856, p. 48
Images
(Click to enlarge in a new window)
Fig. 1085, 1a-s. *N. superba (Suess), Rhaetian, $a$, holotype, ventral view, Hirtenberg, Austria, MGBW 3828, x1.3$ (Pearson, 1977), $b-d$, dorsal, ventral, and lateral views, northern Caucasus, IGiG 47/2443, x1$ (Dagys, 1963, photographs courtesy of the late A. S. Dagys), e-r, transverse serial sections $0.3, 0.8, 1.8, 3.3, 3.7, 4.2, 4.5$, $4.9, 6.1, 6.9, 7.6, 8.3, 8.6, 9.1 \\mathrm{~mm}$ from ventral umbo, distance from ventral umbo to first section approximate, northern Caucasus (adapted from Dagys, 1963), s, jugum, lateral view, northern Caucasus, approximately x1.8$ (Dagys, 1974).
Synonyms
Waldhemia
Geographic Distribution
Slovakia, Austria, Hungary, Romania, Crimea, Iran, Caucasus, Himalayas, Pamir, southern and western China (Tibet)
Age Range
Beginning Stage in Treatise Usage:
Middle Triassic (Anisian)
Beginning International Stage:
Anisian
Fraction Up In Beginning Stage:
0
Beginning Date:
246.7
Ending Stage in Treatise Usage:
Upper Triassic (upper Norian)
Ending International Stage:
Norian
Fraction Up In Ending Stage:
100
Ending Date:
205.74
Description
Subequally biconvex, elongate oval shells with few subangular costae, ventral valve beak nearly straight, foramen in permesothyridid position, internally similar to Retzia but without dental plates and with much thicker cardinal flanges and hinge plates, jugum very posteriorly situated, projecting anteroventrally as a complex stem that rejoins primary lamellae on ventral half
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Athyridida
Superfamily:
Retzioidea
Family:
Neoretziidae
Formal Genus Name and Reference:
Neoretzia DAGYS, 1963, p. 130
Type Species:
Retzia superbescens Bittner, 1890, p. 281, OD, =Waldhemia superba Suess in DAVIDSON, 1856, p. 48
Images
(Click to enlarge in a new window)
Fig. 1085, 1a-s. *N. superba (Suess), Rhaetian, $a$, holotype, ventral view, Hirtenberg, Austria, MGBW 3828, x1.3$ (Pearson, 1977), $b-d$, dorsal, ventral, and lateral views, northern Caucasus, IGiG 47/2443, x1$ (Dagys, 1963, photographs courtesy of the late A. S. Dagys), e-r, transverse serial sections $0.3, 0.8, 1.8, 3.3, 3.7, 4.2, 4.5$, $4.9, 6.1, 6.9, 7.6, 8.3, 8.6, 9.1 \\mathrm{~mm}$ from ventral umbo, distance from ventral umbo to first section approximate, northern Caucasus (adapted from Dagys, 1963), s, jugum, lateral view, northern Caucasus, approximately x1.8$ (Dagys, 1974).
Synonyms
Waldhemia
Geographic Distribution
Slovakia, Austria, Hungary, Romania, Crimea, Iran, Caucasus, Himalayas, Pamir, southern and western China (Tibet)
Age Range
Beginning Stage in Treatise Usage:
Middle Triassic (Anisian)
Beginning International Stage:
Anisian
Fraction Up In Beginning Stage:
0
Beginning Date:
246.7
Ending Stage in Treatise Usage:
Upper Triassic (upper Norian)
Ending International Stage:
Norian
Fraction Up In Ending Stage:
100
Ending Date:
205.74
Description
Subequally biconvex, elongate oval shells with few subangular costae, ventral valve beak nearly straight, foramen in permesothyridid position, internally similar to Retzia but without dental plates and with much thicker cardinal flanges and hinge plates, jugum very posteriorly situated, projecting anteroventrally as a complex stem that rejoins primary lamellae on ventral half