Diagnoza

The sclerites completely flat and irregular in shape; pores separated by thick rods and not aligned. A radial plate with rectangular blades on the ventral side of two proximal processes with caverns occurring over almost their entire surface.

Porównanie

This sclerites differ from those of other species by their flat blade, pore arrangement and the thickness of rods separating the pores. Also the pores are without smooth flanks. Radial plates have a unique development of proximal processes.

Autekologia

Występowanie geograficzne

set V of the Grzegorzowice Beds at Grzegorzowice and set VIII of the Grzegorzowice Beds at Grzegorzowice, Holy Cross Mountains, Poland

Zasięg czasowy

Late Emsian to Early Eifelian: brachiopod Chimaerothyris dombrowiensis Zone (conodont Polygnathus partitus Zone).

Materiały muzealne

Holotype GIUS 4−618 Grz./376/1 and > 1003 specimens.

Literatura

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