Welcome to the Treatise on Invertebrate Paleontology!
Please enter a genera name to retrieve more information.
Plectodonta
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Strophomenida
Superfamily:
Plectambonitoidea
Family:
Sowerbyellidae
Formal Genus Name and Reference:
Plectodonta KOZTOWSKI, 1929, p. 112
Type Species:
P. mariae, OD
Images
(Click to enlarge in a new window)
Fig. 226, 1a–e. *P. (P.) mariae, Taina Formation, Borshchov Group, Lochkovian, Rukhotin, Krzywcze, Podolia, Ukraine; a–c, exterior views of conjoined valves, BMNH BB 81378, ×5 (new); d, dorsal interior, BMNH B 81370, ×6; e, dorsal internal mold, BMNH BB 65810, ×8 (Cocks & Rong, 1989).
Synonyms
Geographic Distribution
cosmopolitan
Age Range
Beginning Stage in Treatise Usage:
Silurian (Přídolí)
Beginning International Stage:
Pridoli
Fraction Up In Beginning Stage:
0
Beginning Date:
422.73
Ending Stage in Treatise Usage:
Devonian (Eifelian)
Ending International Stage:
Eifelian
Fraction Up In Ending Stage:
100
Ending Date:
385.3
Description
Quadrate outline, gently concavoconvex profile, parvicostellate ornament, hinge line denticulate, small pseudodeltidium, chilidial plates, small teeth, stubby socket plates, small bilobed ventral muscle field, bema variably developed, dorsal median septum, platform absent, similar to Eoplectodonta except with stronger pseudodeltidium, less incurved beak, more quadrate, less alate valve extremities, coarse papillae on dorsal valve interior
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Strophomenida
Superfamily:
Plectambonitoidea
Family:
Sowerbyellidae
Formal Genus Name and Reference:
Plectodonta KOZTOWSKI, 1929, p. 112
Type Species:
P. mariae, OD
Images
(Click to enlarge in a new window)
Fig. 226, 1a–e. *P. (P.) mariae, Taina Formation, Borshchov Group, Lochkovian, Rukhotin, Krzywcze, Podolia, Ukraine; a–c, exterior views of conjoined valves, BMNH BB 81378, ×5 (new); d, dorsal interior, BMNH B 81370, ×6; e, dorsal internal mold, BMNH BB 65810, ×8 (Cocks & Rong, 1989).
Synonyms
Geographic Distribution
cosmopolitan
Age Range
Beginning Stage in Treatise Usage:
Silurian (Přídolí)
Beginning International Stage:
Pridoli
Fraction Up In Beginning Stage:
0
Beginning Date:
422.73
Ending Stage in Treatise Usage:
Devonian (Eifelian)
Ending International Stage:
Eifelian
Fraction Up In Ending Stage:
100
Ending Date:
385.3
Description
Quadrate outline, gently concavoconvex profile, parvicostellate ornament, hinge line denticulate, small pseudodeltidium, chilidial plates, small teeth, stubby socket plates, small bilobed ventral muscle field, bema variably developed, dorsal median septum, platform absent, similar to Eoplectodonta except with stronger pseudodeltidium, less incurved beak, more quadrate, less alate valve extremities, coarse papillae on dorsal valve interior