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Ptilorhynchia
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Rhynchonellida
Superfamily:
Rhynchonelloidea
Family:
Rhynchonellidae
Formal Genus Name and Reference:
Ptilorhynchia CRICKMAY, 1933, p. 877
Type Species:
* P. plumasensis, OD
Images
(Click to enlarge in a new window)
Fig. 875, 5a-d. * P. plumasensis, Callovian, California, holotype, dorsal, lateral, anterior, posterior views, × 1 (Crickmay, 1933)., ——Fig. 875, 5 e-k. P. anadyrensis Dagys, Bathonian-Callovian, northeastern Siberia, Anadyr basin, transverse serial sections, distances in mm from first section, 1.7, 2.0, 2.3, 2.7, 3.0, 3.3, 3.8 (Dagys, 1968).
Synonyms
Ptylorhynchia
Geographic Distribution
USA (California), western Canada (British Columbia), northern Siberia, Urals, ?Bajocian, CallovianVolgian; northern Siberia, ? Slovakia, Antarctica, Argentina (mainly circum-Pacific), BerriasianAptian
Age Range
Beginning Stage in Treatise Usage:
Middle Jurassic (?Bajocian, Bathonian)
Beginning International Stage:
Bajocian
Fraction Up In Beginning Stage:
0
Beginning Date:
170.9
Ending Stage in Treatise Usage:
Lower Cretaceous (Aptian)
Ending International Stage:
Aptian
Fraction Up In Ending Stage:
100
Ending Date:
113.2
Description
Medium size, triangular to subpentagonal, subglobose, dorsibiconvex, uniplication marked with strong, short, marginal plicae, anterior commissure rarely asymmetrical, dorsal fold almost imperceptible, ventral sulcus broad, shallow, linguiform extension trapezoidal. Dental plates long, subparallel, hinge plates horizontal to dorsally deflected, dorsal septum high with well-marked septalium.
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Rhynchonellida
Superfamily:
Rhynchonelloidea
Family:
Rhynchonellidae
Formal Genus Name and Reference:
Ptilorhynchia CRICKMAY, 1933, p. 877
Type Species:
* P. plumasensis, OD
Images
(Click to enlarge in a new window)
Fig. 875, 5a-d. * P. plumasensis, Callovian, California, holotype, dorsal, lateral, anterior, posterior views, × 1 (Crickmay, 1933)., ——Fig. 875, 5 e-k. P. anadyrensis Dagys, Bathonian-Callovian, northeastern Siberia, Anadyr basin, transverse serial sections, distances in mm from first section, 1.7, 2.0, 2.3, 2.7, 3.0, 3.3, 3.8 (Dagys, 1968).
Synonyms
Ptylorhynchia
Geographic Distribution
USA (California), western Canada (British Columbia), northern Siberia, Urals, ?Bajocian, CallovianVolgian; northern Siberia, ? Slovakia, Antarctica, Argentina (mainly circum-Pacific), BerriasianAptian
Age Range
Beginning Stage in Treatise Usage:
Middle Jurassic (?Bajocian, Bathonian)
Beginning International Stage:
Bajocian
Fraction Up In Beginning Stage:
0
Beginning Date:
170.9
Ending Stage in Treatise Usage:
Lower Cretaceous (Aptian)
Ending International Stage:
Aptian
Fraction Up In Ending Stage:
100
Ending Date:
113.2
Description
Medium size, triangular to subpentagonal, subglobose, dorsibiconvex, uniplication marked with strong, short, marginal plicae, anterior commissure rarely asymmetrical, dorsal fold almost imperceptible, ventral sulcus broad, shallow, linguiform extension trapezoidal. Dental plates long, subparallel, hinge plates horizontal to dorsally deflected, dorsal septum high with well-marked septalium.