Mohawk Valley Fossils

Oepikina

The figure below shows the distribution of samples containing the strophomenid brachiopod Oepikina. The genus name is sometimes spelled Öpikina.

Oepikina is an uncommon strophomenid brachiopod in the MRV strata. It is very easily confused with the brachipods Rafinesquina and Strophomena.

Oepikina Salmon, 1942 [*Oepikina septata ].: Concavo-convex, with convex or gently geniculate pedicle valve and dorsally geniculate brachial valve; unequally parvicostellate, pseudodeltidium small. Teeth commonly crenulate or tuberculate, dental plates widely divergent; trans-muscle septa strongly developed and high anteriorly, dorsal subperipheral rim conspicuous.
M. Ord. - U. Ord., cosmopolitan.

Family Strophemenidae King, 1846: Concavo-convex to resupinate, rarely geniculate or rugate; apical foramen in adult shells small or (less commonly) closed, shells exceptionally attached by cementation; chilidium well developed, pseudodeltidium usually present but exceptionally resorbed in adult shells. Teeth simple, dental plates usually present; ventral muscle scar variable in outline; notothyrial platform anchor-shaped, dorsal adductor impressions subcircular to oval, traversed by 2 pairs of variable developed ridges (trans-muscle septa); mantle canal systems poorly preserved, but probably saccate in both valves of many genera.
M. Ord. - L. Dev.

Order Strophomenida Opik, 1934

Treatise on Invertebrate Paleontology, H389-390