Welcome to the Treatise on Invertebrate Paleontology!
Please enter a genera name to retrieve more information.
Retziella
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Athyridida
Superfamily:
Retzielloidea
Family:
Retziellidae
Formal Genus Name and Reference:
Retziella NIKIFOROVA, 1937a, p. 57
Type Species:
Retzia (Retziella) weberi, OD
Images
(Click to enlarge in a new window)
Fig. 1076a-w. *R. weberi (Nikiforova), Přídolí, central Asia, southern Tian Shan, Fergana, $a-d$, holotype, dorsal, ventral, lateral, and anterior views, VSEGEI W2456/50327, V. N. Weber Collection, 1885, X2 (Nikiforova, 1937a, photographs courtesy of T. L. Modzalevskaya), $e-l$, serial sections, NIGP 121423$1, m$, lateral view of sectioned specimen showing approximate position of serial sections, $n-v$, serial sections, NIGP 121423-1, $w$, lateral view of sectioned specimen showing approximate position of serial sections (adapted from Rong & others, 1994). - Fig. 1076x-y. R. minor (HAYASAKA), upper Ludlow-lower Přídolí, Yunnan, ventral and lateral views of reconstructed jugum, approximately x3$ (Rong & others, 1994).
Synonyms
Protathyrisina, Athyrisina minor, Stegospira, Gannania
Geographic Distribution
Kyrgyzstan, Tajikistan, China (Jilin, Inner Mongolia, Gansu, Sichuan, Yunnan, Guangxi), northern Vietnam, southwestern Tian Shan, ?North Korea, ?central Pamir, ?Afghanistan, ?eastern Iran, ?New Zealand
Age Range
Beginning Stage in Treatise Usage:
Silurian (upper Wenlock)
Beginning International Stage:
Homerian
Fraction Up In Beginning Stage:
50
Beginning Date:
428.68
Ending Stage in Treatise Usage:
Lower Devonian (lower Lochkovian)
Ending International Stage:
Lochkovian
Fraction Up In Ending Stage:
40
Ending Date:
416.36
Description
"Shell with variably developed ventral sulcus and dorsal fold, both usually ribbed or plicate, well-developed apical septalium, shallow and partially covered by platelike crural bases and supported by short septum."
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Athyridida
Superfamily:
Retzielloidea
Family:
Retziellidae
Formal Genus Name and Reference:
Retziella NIKIFOROVA, 1937a, p. 57
Type Species:
Retzia (Retziella) weberi, OD
Images
(Click to enlarge in a new window)
Fig. 1076a-w. *R. weberi (Nikiforova), Přídolí, central Asia, southern Tian Shan, Fergana, $a-d$, holotype, dorsal, ventral, lateral, and anterior views, VSEGEI W2456/50327, V. N. Weber Collection, 1885, X2 (Nikiforova, 1937a, photographs courtesy of T. L. Modzalevskaya), $e-l$, serial sections, NIGP 121423$1, m$, lateral view of sectioned specimen showing approximate position of serial sections, $n-v$, serial sections, NIGP 121423-1, $w$, lateral view of sectioned specimen showing approximate position of serial sections (adapted from Rong & others, 1994). - Fig. 1076x-y. R. minor (HAYASAKA), upper Ludlow-lower Přídolí, Yunnan, ventral and lateral views of reconstructed jugum, approximately x3$ (Rong & others, 1994).
Synonyms
Protathyrisina, Athyrisina minor, Stegospira, Gannania
Geographic Distribution
Kyrgyzstan, Tajikistan, China (Jilin, Inner Mongolia, Gansu, Sichuan, Yunnan, Guangxi), northern Vietnam, southwestern Tian Shan, ?North Korea, ?central Pamir, ?Afghanistan, ?eastern Iran, ?New Zealand
Age Range
Beginning Stage in Treatise Usage:
Silurian (upper Wenlock)
Beginning International Stage:
Homerian
Fraction Up In Beginning Stage:
50
Beginning Date:
428.68
Ending Stage in Treatise Usage:
Lower Devonian (lower Lochkovian)
Ending International Stage:
Lochkovian
Fraction Up In Ending Stage:
40
Ending Date:
416.36
Description
"Shell with variably developed ventral sulcus and dorsal fold, both usually ribbed or plicate, well-developed apical septalium, shallow and partially covered by platelike crural bases and supported by short septum."