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Coelospirella
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Athyridida
Superfamily:
Anoplothecoidea
Family:
Anaplothecidae
Formal Genus Name and Reference:
Coelospirella SU, 1976, p. 202
Type Species:
C. dongbeiensis, OD
Images
(Click to enlarge in a new window)
Fig. 1097, 3a-d. *C. dongbeiensis, Emsian, Inner Mongolia, northern China, $a$, dorsal view, NS12014, $b$, ventral view, NS12003, $c$, posterior view, NS12303; d, internal mold of ventral valve, NS12006, ×3 (Su, 1976).
Synonyms
Geographic Distribution
Inner Mongolia, northern China, Kazakhstan, eastern Russia
Age Range
Beginning Stage in Treatise Usage:
upper Silurian (Přídoli)
Beginning International Stage:
Pridoli
Fraction Up In Beginning Stage:
0
Beginning Date:
422.73
Ending Stage in Treatise Usage:
Lower Devonian (Emsian)
Ending International Stage:
Emsian
Fraction Up In Ending Stage:
100
Ending Date:
394.3
Description
Small, plano- to concavoconvex shells, resembling Navispira but with weak ribs that do not bifurcate, internally short dental plates were reported, but additional information (provided by Su Yangzheng, 2001) confirms that dental plates are absent and that spiralium and jugum are as in Coelospira. Said to differ from Coelospira by lacking bifurcating ribs, from Bifida in convexity, from Anoplotheca by its muscle area and vascular marking, from Coelospirina by convexity, type of cardinal process, and nature of ventral muscle field. [Poorly represented and known, requires revision.]
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Athyridida
Superfamily:
Anoplothecoidea
Family:
Anaplothecidae
Formal Genus Name and Reference:
Coelospirella SU, 1976, p. 202
Type Species:
C. dongbeiensis, OD
Images
(Click to enlarge in a new window)
Fig. 1097, 3a-d. *C. dongbeiensis, Emsian, Inner Mongolia, northern China, $a$, dorsal view, NS12014, $b$, ventral view, NS12003, $c$, posterior view, NS12303; d, internal mold of ventral valve, NS12006, ×3 (Su, 1976).
Synonyms
Geographic Distribution
Inner Mongolia, northern China, Kazakhstan, eastern Russia
Age Range
Beginning Stage in Treatise Usage:
upper Silurian (Přídoli)
Beginning International Stage:
Pridoli
Fraction Up In Beginning Stage:
0
Beginning Date:
422.73
Ending Stage in Treatise Usage:
Lower Devonian (Emsian)
Ending International Stage:
Emsian
Fraction Up In Ending Stage:
100
Ending Date:
394.3
Description
Small, plano- to concavoconvex shells, resembling Navispira but with weak ribs that do not bifurcate, internally short dental plates were reported, but additional information (provided by Su Yangzheng, 2001) confirms that dental plates are absent and that spiralium and jugum are as in Coelospira. Said to differ from Coelospira by lacking bifurcating ribs, from Bifida in convexity, from Anoplotheca by its muscle area and vascular marking, from Coelospirina by convexity, type of cardinal process, and nature of ventral muscle field. [Poorly represented and known, requires revision.]