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Cyrtinopsis
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferida
Superfamily:
Delthyriodoidea
Family:
Cyrtinopsidae
Formal Genus Name and Reference:
Cyrtinopsis SCUPIN, 1896, p. 247
Type Species:
Spirifer undosus SCHNUR, 1853, p. 204, OD
Images
(Click to enlarge in a new window)
Fig. 1225, 1a-f. *C. undosa (Schnur), Eifelian, Germany, a-d, dorsal, anterior, posterior, and lateral views, X1, e, microornament, X3, f, transverse section of ventral valve, X5 (Boucot, 1957a).
Synonyms
Geographic Distribution
Europe, Salair, Russia (GornoAltay), western USA (Nevada), Australia, New Zealand
Age Range
Beginning Stage in Treatise Usage:
Lower Devonian (Lochkovian)
Beginning International Stage:
Lochkovian
Fraction Up In Beginning Stage:
0
Beginning Date:
419
Ending Stage in Treatise Usage:
Middle Devonian (Eifelian)
Ending International Stage:
Eifelian
Fraction Up In Ending Stage:
100
Ending Date:
385.3
Description
Medium to large, transverse, cardinal angles acute, ventral interarea moderately high, flat to curved, catacline or apsacline, with open delthyrium, fold and sulcus smooth, flanks with strong plications, capillae take form of crenulations crossed by fila, dental plates and median septum forming spondylium, bilobed cardinal process, becoming striate ctenophoridium in some.
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferida
Superfamily:
Delthyriodoidea
Family:
Cyrtinopsidae
Formal Genus Name and Reference:
Cyrtinopsis SCUPIN, 1896, p. 247
Type Species:
Spirifer undosus SCHNUR, 1853, p. 204, OD
Images
(Click to enlarge in a new window)
Fig. 1225, 1a-f. *C. undosa (Schnur), Eifelian, Germany, a-d, dorsal, anterior, posterior, and lateral views, X1, e, microornament, X3, f, transverse section of ventral valve, X5 (Boucot, 1957a).
Synonyms
Geographic Distribution
Europe, Salair, Russia (GornoAltay), western USA (Nevada), Australia, New Zealand
Age Range
Beginning Stage in Treatise Usage:
Lower Devonian (Lochkovian)
Beginning International Stage:
Lochkovian
Fraction Up In Beginning Stage:
0
Beginning Date:
419
Ending Stage in Treatise Usage:
Middle Devonian (Eifelian)
Ending International Stage:
Eifelian
Fraction Up In Ending Stage:
100
Ending Date:
385.3
Description
Medium to large, transverse, cardinal angles acute, ventral interarea moderately high, flat to curved, catacline or apsacline, with open delthyrium, fold and sulcus smooth, flanks with strong plications, capillae take form of crenulations crossed by fila, dental plates and median septum forming spondylium, bilobed cardinal process, becoming striate ctenophoridium in some.