Wikipedia
Kutorgina
Kutorgina is a genus of Cambrian brachiopod and is one of the earliest of the articulates, known as rhynchonelliforms.
Kutorgina has a concavo-convex shell with the smaller brachial valve dished in and the larger pedical valve broadly arched. The brachial valve has a rather prominent interarea at the back which is curved over by the prominent beak at the back of the pedical valve.
It includes the species Kutorgina elanica Malakhovskaya, 2013