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Paulonia
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferida
Superfamily:
Ambocoelioidea
Family:
Eudoxinidae
Formal Genus Name and Reference:
Paulonia NALIVKIN, 1925, p. 267
Type Species:
Spirifer ranovensis PEETZ, 1893, p. 53, OD
Images
(Click to enlarge in a new window)
Fig. 1145, 5a-b. *P. ranovensis (Peetz), dorsal and lateral views, X2 (new).
Synonyms
Geographic Distribution
Russia, Ukraine
Age Range
Beginning Stage in Treatise Usage:
Upper Devonian (Famennian)
Beginning International Stage:
Famennian
Fraction Up In Beginning Stage:
0
Beginning Date:
371.1
Ending Stage in Treatise Usage:
Carboniferous (Tournaisian)
Ending International Stage:
Tournaisian
Fraction Up In Ending Stage:
100
Ending Date:
346.73
Description
Small to medium size, unequally biconvex, moderately transverse to equidimensional, outline rounded subpentagonal, fold and sulcus poorly to moderately developed, lateral extremities well rounded, hinge line much shorter than maximum width, entire surface with numerous fine simple costellae, microornament consisting of fine oval papillae, inner fibrous shell layer pitted, ventral interior with delthyrial plate, dorsal interior unknown.
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferida
Superfamily:
Ambocoelioidea
Family:
Eudoxinidae
Formal Genus Name and Reference:
Paulonia NALIVKIN, 1925, p. 267
Type Species:
Spirifer ranovensis PEETZ, 1893, p. 53, OD
Images
(Click to enlarge in a new window)
Fig. 1145, 5a-b. *P. ranovensis (Peetz), dorsal and lateral views, X2 (new).
Synonyms
Geographic Distribution
Russia, Ukraine
Age Range
Beginning Stage in Treatise Usage:
Upper Devonian (Famennian)
Beginning International Stage:
Famennian
Fraction Up In Beginning Stage:
0
Beginning Date:
371.1
Ending Stage in Treatise Usage:
Carboniferous (Tournaisian)
Ending International Stage:
Tournaisian
Fraction Up In Ending Stage:
100
Ending Date:
346.73
Description
Small to medium size, unequally biconvex, moderately transverse to equidimensional, outline rounded subpentagonal, fold and sulcus poorly to moderately developed, lateral extremities well rounded, hinge line much shorter than maximum width, entire surface with numerous fine simple costellae, microornament consisting of fine oval papillae, inner fibrous shell layer pitted, ventral interior with delthyrial plate, dorsal interior unknown.