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Aporthophyla
Classification
Phylum:
Brachiopoda
Subphylum:
Rhynchonelliformea
Class:
Strophomenata
Order:
Strophomenida
Superfamily:
Plectambonitoidea
Family:
Taffiidae
Subfamily:
Taffiinae
Formal Genus Name and Reference:
Aporthophyla Ulrich & COOPER, 1936b, p. 625
Type Species:
A. typa, OD
Images
(Click to enlarge in a new window)
Fig. 200, 3a-d. *A. typa, Antelope Valley Formation, Llanvirn, Ikes Canyon, Nevada, a-c, latex cast of dorsal exterior, dorsal internal mold, latex cast, USNM 92866e, x1.5, d, ventral internal mold, USNM 117566, X1.5 (Cooper, 1956).
Synonyms
Geographic Distribution
North America, Asia, Australia
Age Range
Beginning Stage in Treatise Usage:
Ordovician (Arenig)
Beginning International Stage:
Floian
Fraction Up In Beginning Stage:
0
Beginning Date:
477.08
Ending Stage in Treatise Usage:
Ordovician (Llanvirn)
Ending International Stage:
Darriwilian
Fraction Up In Ending Stage:
56.9
Ending Date:
463.02
Description
Gently concavoconvex to planoconvex profile, differs from Taffia in its unequally parvicostellate ornament, smaller interarea, chilidium present, pseudodeltidium reduced or absent, strong dental plates, short ventral muscle-bounding ridges, cardinal process always present, dorsal muscle field weak: short dorsal myophragm to quarter valve length.
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Subphylum:
Rhynchonelliformea
Class:
Strophomenata
Order:
Strophomenida
Superfamily:
Plectambonitoidea
Family:
Taffiidae
Subfamily:
Taffiinae
Formal Genus Name and Reference:
Aporthophyla Ulrich & COOPER, 1936b, p. 625
Type Species:
A. typa, OD
Images
(Click to enlarge in a new window)
Fig. 200, 3a-d. *A. typa, Antelope Valley Formation, Llanvirn, Ikes Canyon, Nevada, a-c, latex cast of dorsal exterior, dorsal internal mold, latex cast, USNM 92866e, x1.5, d, ventral internal mold, USNM 117566, X1.5 (Cooper, 1956).
Synonyms
Geographic Distribution
North America, Asia, Australia
Age Range
Beginning Stage in Treatise Usage:
Ordovician (Arenig)
Beginning International Stage:
Floian
Fraction Up In Beginning Stage:
0
Beginning Date:
477.08
Ending Stage in Treatise Usage:
Ordovician (Llanvirn)
Ending International Stage:
Darriwilian
Fraction Up In Ending Stage:
56.9
Ending Date:
463.02
Description
Gently concavoconvex to planoconvex profile, differs from Taffia in its unequally parvicostellate ornament, smaller interarea, chilidium present, pseudodeltidium reduced or absent, strong dental plates, short ventral muscle-bounding ridges, cardinal process always present, dorsal muscle field weak: short dorsal myophragm to quarter valve length.