Amphoracrinus cf. gilbertsoni Phillips.
Matrix free Crinoid calyx from an old collection. Nice preservation and detail. These were the very first fossils I ever collected as a schoolboy back in 1968. The famous crinoid beds in Salthill quarry have been protected by SSSI status for decades now.
Lower carboniferous, Viséan.
Salthill Quarry, Clitheroe, Lancashire.
Calyx : 3.5 x 3 cm.