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Aporthophyla
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Strophomenida
Superfamily:
Plectambonitoidea
Family:
Taffiidae
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
Class:
Strophomenata
Order:
Strophomenida
Superfamily:
Plectambonitoidea
Family:
Taffiidae
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.