Sclerite of Holotype: GIUS 4−779 Zba./354/1 from the earliest Eifelian Chimaerothyris dombrowiensis horizon of Zbrza; side, oposite and lateral view.

Diagnoza

Centre of the sclerite crescentic in shape; lamella perforated; head with processes at both ends, in a comb-like arrangement.

Porównanie

This type of the sclerites is the most primitive in the whole subfamily.

Autekologia

Występowanie geograficzne

Set V of the Grzegorzowice Beds at Grzegorzowice; Zbrza and set VIII of the Grzegorzowice Beds at Grzegorzowice, Holy Cross Mountains, Poland.

Zasięg czasowy

Late Emsian and Early Eifelian: brachiopod Chimaerothyris dombrowiensis Zone (Polygnathus partitus Zone)

Materiały muzealne

Holotype GIUS 4−779 Zba./354/1 and 44 specimens.

Literatura

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