Anastrophia deflexa brachiopod from the Wenlock Formation

This is Anastrophia deflexa from the Silurian aged Wenlock formation, near Dudley, England. The shell looks very similar to Plecatrypa in size and shape but does not have the prominent growth lines. It has strong, coarse ribs, a shallow sulcus and lacks a visible interarea. I have posted before about a similar species from the Waldron shale: Anastrophia internascens.

Brachial valve

Anterior

Pedicle valve

Posterior

Profile