Article: Llandovery stropheodontids from the Welsh Borderland

Eleven species and two subspecies in six genera of stropheodontid brachiopods are described from the Upper Llandovery (Lower Silurian) of the Welsh Borderland. Five species and one subspecies are new: Leptostrophia ostrina, L. voraginis and subspecies palustris, Amphistrophia whittardi, Pholidostrophia salopiensis, and Megastrophia ethica; the latter is also made the type of a new subgenus Eomegastrophia. New information has been gained on the phylogeny of the family.