Diagnoza

Main perforate plates from the outer ring of tentacles tongue shaped. Ventral side smooth.

Porównanie

This species differs from P. hunsrueckiana by a delicate structure of its plates and by the presence of short, instead of long, processes on the distal plates. From P. delicata it differs by the outline of the main plates from tentacles and the lack of ridges on their ventral surfaces.

Autekologia

Występowanie geograficzne

Sets XIII–XIX of the Skały Beds at Skały and outcrop III at Śniadka, Holy Cross Mountains, Poland

Zasięg czasowy

Late Eifelian to Early Givetian.

Materiały muzealne

Holotype GIUS 4−802 Ska./826/4 and > 13650 specimens.

Literatura

Boczarowski, A. 2001. Isolated sclerites of Devonian non-pelmatozoan echinoderms. Palaeontologia Polonica 59, 3–220.