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Rostrospirifer
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferida
Superfamily:
Delthyriodoidea
Family:
Hysterolitidae
Formal Genus Name and Reference:
Rostrospirifer Grabau, 1931a, p. 407
Type Species:
Spirifer tonkinensis MANSUY, 1908, p. 41, OD
Images
(Click to enlarge in a new window)
Fig. 1213, 1 a-b. *R. tonkinensis (Mansuy), lower Emsian, northern Vietnam, cast of ventral valve exterior and cast of posterior view exterior, X1 (Mansuy, 1908).
Synonyms
Neodelthyris
Geographic Distribution
southern China, northern Vietnam, New Zealand
Age Range
Beginning Stage in Treatise Usage:
Lower Devonian (Emsian)
Beginning International Stage:
Emsian
Fraction Up In Beginning Stage:
0
Beginning Date:
410.51
Ending Stage in Treatise Usage:
Lower Devonian (Emsian)
Ending International Stage:
Emsian
Fraction Up In Ending Stage:
100
Ending Date:
394.3
Description
Medium to large, transverse, with acute cardinal angles, ventral interarea curved, low, apsacline, fold and sulcus smooth, flanks with strong, simple plications, dental plates well developed, divergent, partly buried in umbonal callus, crural plates short or lacking
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferida
Superfamily:
Delthyriodoidea
Family:
Hysterolitidae
Formal Genus Name and Reference:
Rostrospirifer Grabau, 1931a, p. 407
Type Species:
Spirifer tonkinensis MANSUY, 1908, p. 41, OD
Images
(Click to enlarge in a new window)
Fig. 1213, 1 a-b. *R. tonkinensis (Mansuy), lower Emsian, northern Vietnam, cast of ventral valve exterior and cast of posterior view exterior, X1 (Mansuy, 1908).
Synonyms
Neodelthyris
Geographic Distribution
southern China, northern Vietnam, New Zealand
Age Range
Beginning Stage in Treatise Usage:
Lower Devonian (Emsian)
Beginning International Stage:
Emsian
Fraction Up In Beginning Stage:
0
Beginning Date:
410.51
Ending Stage in Treatise Usage:
Lower Devonian (Emsian)
Ending International Stage:
Emsian
Fraction Up In Ending Stage:
100
Ending Date:
394.3
Description
Medium to large, transverse, with acute cardinal angles, ventral interarea curved, low, apsacline, fold and sulcus smooth, flanks with strong, simple plications, dental plates well developed, divergent, partly buried in umbonal callus, crural plates short or lacking