Welcome to the Treatise on Invertebrate Paleontology!
Please enter a genera name to retrieve more information.
Toquimia
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Strophomenida
Superfamily:
Plectambonitoidea
Family:
Leptellinidae
Formal Genus Name and Reference:
Toquimia Ulrich & COOPER, 1936b, p. 626
Type Species:
T. kirki, OD
Images
(Click to enlarge in a new window)
Fig. 212, 2a-c. * T. kirki, upper Pogonip Group, Llanvirn, Ikes Canyon, Nevada, $a$, interarea of conjoined valves, USNM 117567h, x3$, $b$, latex of ventral internal mold, USNM 117567a, x1.5$, $c$, latex of dorsal internal mold, USNM 117567d, x2$ (Cooper, 1956).
Synonyms
Geographic Distribution
cosmopolitan
Age Range
Beginning Stage in Treatise Usage:
Ordovician (Llanvirn)
Beginning International Stage:
Dapingian
Fraction Up In Beginning Stage:
0
Beginning Date:
471.26
Ending Stage in Treatise Usage:
Ordovician (?Caradoc)
Ending International Stage:
Katian
Fraction Up In Ending Stage:
66.7
Ending Date:
447.72
Description
Gently concavoconvex to planoconvex profile initially, but resupination develops anteriorly in larger specimens, unequally parvicostellate ornament, large pseudodeltidium, small chilidium variably developed, large but poorly impressed ventral muscle field, ventral subperipheral rim, bulbous cardinal process with massive central component, small lateral processes, short, erect socket ridges, weak myophragm extending anteriorly into thin, low median septum, mantle canals often well impressed, similar to Apatomorpha but with weak platform
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Strophomenida
Superfamily:
Plectambonitoidea
Family:
Leptellinidae
Formal Genus Name and Reference:
Toquimia Ulrich & COOPER, 1936b, p. 626
Type Species:
T. kirki, OD
Images
(Click to enlarge in a new window)
Fig. 212, 2a-c. * T. kirki, upper Pogonip Group, Llanvirn, Ikes Canyon, Nevada, $a$, interarea of conjoined valves, USNM 117567h, x3$, $b$, latex of ventral internal mold, USNM 117567a, x1.5$, $c$, latex of dorsal internal mold, USNM 117567d, x2$ (Cooper, 1956).
Synonyms
Geographic Distribution
cosmopolitan
Age Range
Beginning Stage in Treatise Usage:
Ordovician (Llanvirn)
Beginning International Stage:
Dapingian
Fraction Up In Beginning Stage:
0
Beginning Date:
471.26
Ending Stage in Treatise Usage:
Ordovician (?Caradoc)
Ending International Stage:
Katian
Fraction Up In Ending Stage:
66.7
Ending Date:
447.72
Description
Gently concavoconvex to planoconvex profile initially, but resupination develops anteriorly in larger specimens, unequally parvicostellate ornament, large pseudodeltidium, small chilidium variably developed, large but poorly impressed ventral muscle field, ventral subperipheral rim, bulbous cardinal process with massive central component, small lateral processes, short, erect socket ridges, weak myophragm extending anteriorly into thin, low median septum, mantle canals often well impressed, similar to Apatomorpha but with weak platform