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Spirinella
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferida
Superfamily:
Reticularioidea
Family:
Reticulariidae
Formal Genus Name and Reference:
Spirinella JOHNSTON, 1941, p. 161
Type Species:
S. caecistriata, OD
Images
(Click to enlarge in a new window)
Fig. 1235, 1 a-j .*S. caecistriata, lower Ludlow, New South Wales, Australia, a-e, dorsal, ventral, anterior, posterior, lateral views, X1.5, f, ornament, X16 (Strusz, 1984), g, detail of cardinalia, X5 (Strusz, 1985), h-j, dorsal, ventral, posterior views of internal mold, X1.5 (new).
Synonyms
Ectatoglossa
Geographic Distribution
Australia, western North America, Altai, China, Czech Republic
Age Range
Beginning Stage in Treatise Usage:
Silurian (upper Llandovery)
Beginning International Stage:
Telychian
Fraction Up In Beginning Stage:
0
Beginning Date:
438.59
Ending Stage in Treatise Usage:
Lower Devonian (upper Emsian)
Ending International Stage:
Emsian
Fraction Up In Ending Stage:
100
Ending Date:
394.3
Description
Medium size, equidimensional to slightly transverse, smooth, inequivalve with apsacline, curved ventral interarea, cardinal angles rounded, fold and sulcus smooth, very low, poorly defined except near weakly uniplicate commissure, flanks lacking plications, numerous closely spaced growth lamellae with marginal spine bases or papillae, moderately long, divergent dental plates, short delthyrial plate, and variably impressed muscle field, ctenophoridium and short crural plates.
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferida
Superfamily:
Reticularioidea
Family:
Reticulariidae
Formal Genus Name and Reference:
Spirinella JOHNSTON, 1941, p. 161
Type Species:
S. caecistriata, OD
Images
(Click to enlarge in a new window)
Fig. 1235, 1 a-j .*S. caecistriata, lower Ludlow, New South Wales, Australia, a-e, dorsal, ventral, anterior, posterior, lateral views, X1.5, f, ornament, X16 (Strusz, 1984), g, detail of cardinalia, X5 (Strusz, 1985), h-j, dorsal, ventral, posterior views of internal mold, X1.5 (new).
Synonyms
Ectatoglossa
Geographic Distribution
Australia, western North America, Altai, China, Czech Republic
Age Range
Beginning Stage in Treatise Usage:
Silurian (upper Llandovery)
Beginning International Stage:
Telychian
Fraction Up In Beginning Stage:
0
Beginning Date:
438.59
Ending Stage in Treatise Usage:
Lower Devonian (upper Emsian)
Ending International Stage:
Emsian
Fraction Up In Ending Stage:
100
Ending Date:
394.3
Description
Medium size, equidimensional to slightly transverse, smooth, inequivalve with apsacline, curved ventral interarea, cardinal angles rounded, fold and sulcus smooth, very low, poorly defined except near weakly uniplicate commissure, flanks lacking plications, numerous closely spaced growth lamellae with marginal spine bases or papillae, moderately long, divergent dental plates, short delthyrial plate, and variably impressed muscle field, ctenophoridium and short crural plates.