Meristella

Meristella is an extinct genus of brachiopods found from the Late Silurian to the Late Devonian. They are characterized by a smooth oval shell and a prominent incurved beak on the pedicle valve. "Meristella" is placed in the family Meristellidae of the articulate brachiopod order Athyridida.
Related genera include "Charionella", "Meristelloides", and "Pentagonia".