A new specimen of the synziphosuran Limuloides limuloides (Woodward, 1865) from the Silurian of the Welsh Borderland

About three dozen specimens of the synziphosuran Limuloides limuloides (Woodward 1865) have been collected from Silurian strata in the Welsh Borderland since 1855, making it a rather rare component of the fauna. Most of these specimens are incomplete, mainly isolated prosomas. Here, a new specimen of the species is described from a single part (no counterpart). It is an articulated prosoma and opisthosoma, lacking a telson, and in apparently full relief. It comes from the lowermost Aston Mudstone Formation (Wenlock: Homerian, probably nassa zone), from a locality close to Aston Dingle near Bishop’s Castle, Shropshire, which is a new locality for L. limuloides , and the specimen is only the third known for this species in the Wenlock.