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Plectorhynchella
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Rhynchonellida
Superfamily:
Pugnacoidea
Family:
Plectorhynchellidae
Formal Genus Name and Reference:
Plectorhynchella Cooper & MUIR-WOOD, 1951, p. 195
Type Species:
Athyris collinensis FRECH, 1902, p. 99, OD
Images
(Click to enlarge in a new window)
Fig. 801, 1a-k. *P. collinensis (Frech), middle Famennian, Pizzo Collina Formation, Carnic Alps, Pizzo Collina, northern Italy, a-d, neotype, dorsal, ventral, anterior, and lateral views, ×1.5, e-k, serial sections 0.7, 0.8, 0.9, 1.0, 1.15, 1.3, 1.4 mm from posterior, ×7 (Ferrari & Vai, 1973).
Synonyms
Geographic Distribution
Europe, Urals, northern Africa, central Asia, western North America
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:
Upper Devonian (Famennian)
Ending International Stage:
Famennian
Fraction Up In Ending Stage:
100
Ending Date:
359.3
Description
Small, longitudinally ovate outline, ventribiconvex. Beak straight to erect, foramen rounded, hypothyrid. Dorsal sulcus and ventral fold low, wide, anterior commissure plicosulcate, umbones smooth. Costae subrounded, irregular, most pronounced in sulcus and on fold. Dental plates short, convergent to divergent ventrally, teeth short, convergent dorsally. Dorsal median septum short, thin, abruptly truncated, hinge plates divided, septalium absent, crura long, closely set. Upper Devonian (Famennian): Europe, Urals, northern Africa, central Asia, western North America.
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Rhynchonellida
Superfamily:
Pugnacoidea
Family:
Plectorhynchellidae
Formal Genus Name and Reference:
Plectorhynchella Cooper & MUIR-WOOD, 1951, p. 195
Type Species:
Athyris collinensis FRECH, 1902, p. 99, OD
Images
(Click to enlarge in a new window)
Fig. 801, 1a-k. *P. collinensis (Frech), middle Famennian, Pizzo Collina Formation, Carnic Alps, Pizzo Collina, northern Italy, a-d, neotype, dorsal, ventral, anterior, and lateral views, ×1.5, e-k, serial sections 0.7, 0.8, 0.9, 1.0, 1.15, 1.3, 1.4 mm from posterior, ×7 (Ferrari & Vai, 1973).
Synonyms
Geographic Distribution
Europe, Urals, northern Africa, central Asia, western North America
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:
Upper Devonian (Famennian)
Ending International Stage:
Famennian
Fraction Up In Ending Stage:
100
Ending Date:
359.3
Description
Small, longitudinally ovate outline, ventribiconvex. Beak straight to erect, foramen rounded, hypothyrid. Dorsal sulcus and ventral fold low, wide, anterior commissure plicosulcate, umbones smooth. Costae subrounded, irregular, most pronounced in sulcus and on fold. Dental plates short, convergent to divergent ventrally, teeth short, convergent dorsally. Dorsal median septum short, thin, abruptly truncated, hinge plates divided, septalium absent, crura long, closely set. Upper Devonian (Famennian): Europe, Urals, northern Africa, central Asia, western North America.