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Xenospirifer
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferida
Superfamily:
Delthyriodoidea
Family:
Delthyrididae
Formal Genus Name and Reference:
Xenospirifer Hou & XIAN, 1975, p. 69
Type Species:
* Spirifer (Plectospirifer) fongi GRABAU, 1931b, p. 380, OD
Images
(Click to enlarge in a new window)
Fig. 1212, 3a-d. *X. fongi (Grabau), Eifelian, southern China, ventral, dorsal, anterior, and side views, × 1.5 (new).
Synonyms
Geographic Distribution
Salair, western Siberian plain, southern China
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:
Middle Devonian (Eifelian)
Ending International Stage:
Eifelian
Fraction Up In Ending Stage:
100
Ending Date:
385.3
Description
Medium to large, equidimensional with subquadrate cardinal angles, ventral interarea long, curved, apsacline, fold and sulcus distinct, flanks with few strong, rounded, simple plications, concentric lamellae crossed by short radial spines or rows of granules anteriorly, long dental plates present, ctenophoridium present
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferida
Superfamily:
Delthyriodoidea
Family:
Delthyrididae
Formal Genus Name and Reference:
Xenospirifer Hou & XIAN, 1975, p. 69
Type Species:
* Spirifer (Plectospirifer) fongi GRABAU, 1931b, p. 380, OD
Images
(Click to enlarge in a new window)
Fig. 1212, 3a-d. *X. fongi (Grabau), Eifelian, southern China, ventral, dorsal, anterior, and side views, × 1.5 (new).
Synonyms
Geographic Distribution
Salair, western Siberian plain, southern China
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:
Middle Devonian (Eifelian)
Ending International Stage:
Eifelian
Fraction Up In Ending Stage:
100
Ending Date:
385.3
Description
Medium to large, equidimensional with subquadrate cardinal angles, ventral interarea long, curved, apsacline, fold and sulcus distinct, flanks with few strong, rounded, simple plications, concentric lamellae crossed by short radial spines or rows of granules anteriorly, long dental plates present, ctenophoridium present