The type species of Lingulella (Cambrian Brachiopoda)

The poorly known type species of Lingulella, Lingula davisii M'Coy, 1851b, is redefined from new material collected from the type locality and horizon (Upper Cambrian, North Wales). Lingulella is similar to Obolus and to Ungu la in its musculature, mantle canals, and pseudointerareas, but has a thinn er shell and irregular pits over its internal surface, concentrated in the visceral areas. A dissolution method that can facilitate the study of lingu late brachiopods preserved in elastic lithologies is described, and its wid er adoption is recommended in order to reveal diagnostic morphological char acters.