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Athyrisinoides
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Atrypida
Superfamily:
Atrypoidea
Family:
Atrypinidae
Formal Genus Name and Reference:
Athyrisinoides Jiang in Xian & JIANG, 1978, p. 303
Type Species:
A. typica Chen & Wan in CHEN, 1979, p. 20, OD
Images
(Click to enlarge in a new window)
Fig. 965, 2a-c. *A. shiqianensis, middle Llandovery, dorsal, ventral, and anterior views, x1$ (Jiang, 1978)., ——Fig. 965, 2d-e. A. seclusa (Rong & Yang), middle Llandovery, serial sections, x5$ (Rong & Yang, 1981).
Synonyms
Athyrisinoidea, Neoathyrisina, Kritorhynchia
Geographic Distribution
southwestern China (Guizhou)
Age Range
Beginning Stage in Treatise Usage:
Silurian (middle Llandovery)
Beginning International Stage:
Aeronian
Fraction Up In Beginning Stage:
66
Beginning Date:
439.24
Ending Stage in Treatise Usage:
Silurian (upper Llandovery)
Ending International Stage:
Telychian
Fraction Up In Ending Stage:
100
Ending Date:
432.93
Description
Distinguished from Anabaria by coarser ribs, sharply defined, Plectatrypa-like fold, and presence of very short growth lamellae, genus is homeomorphic with some athyrisinids (Athyridida), but distinguished by dorsally directed atrypoid spiralia. Regarding the synonymy of this genus, Athyrisinoides Jiang, 1978, an atrypid, has priority. Athyrisinoides Chen & Wan, 1979, an athyridid, is a junior homonym. Chen & Wan renamed their athyridid Athyrisinoidea, but since there is only one letter difference in the names, they renamed it again as Neoathyrisina.
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Atrypida
Superfamily:
Atrypoidea
Family:
Atrypinidae
Formal Genus Name and Reference:
Athyrisinoides Jiang in Xian & JIANG, 1978, p. 303
Type Species:
A. typica Chen & Wan in CHEN, 1979, p. 20, OD
Images
(Click to enlarge in a new window)
Fig. 965, 2a-c. *A. shiqianensis, middle Llandovery, dorsal, ventral, and anterior views, x1$ (Jiang, 1978)., ——Fig. 965, 2d-e. A. seclusa (Rong & Yang), middle Llandovery, serial sections, x5$ (Rong & Yang, 1981).
Synonyms
Athyrisinoidea, Neoathyrisina, Kritorhynchia
Geographic Distribution
southwestern China (Guizhou)
Age Range
Beginning Stage in Treatise Usage:
Silurian (middle Llandovery)
Beginning International Stage:
Aeronian
Fraction Up In Beginning Stage:
66
Beginning Date:
439.24
Ending Stage in Treatise Usage:
Silurian (upper Llandovery)
Ending International Stage:
Telychian
Fraction Up In Ending Stage:
100
Ending Date:
432.93
Description
Distinguished from Anabaria by coarser ribs, sharply defined, Plectatrypa-like fold, and presence of very short growth lamellae, genus is homeomorphic with some athyrisinids (Athyridida), but distinguished by dorsally directed atrypoid spiralia. Regarding the synonymy of this genus, Athyrisinoides Jiang, 1978, an atrypid, has priority. Athyrisinoides Chen & Wan, 1979, an athyridid, is a junior homonym. Chen & Wan renamed their athyridid Athyrisinoidea, but since there is only one letter difference in the names, they renamed it again as Neoathyrisina.