Goniodont, holotype GIUS 4−618 Grz./378/10 from the earliest Eifelian,Chimaerothyris dombrowiensis horizon, set VIII of Grzegorzowice, outer view

Diagnoza

Small goniodonts with parabolic contour at the distal margin and only weakly incised, and wavy proximal margin. The teeth corners tapering and rounded. Goniodonts length exceeds their width.

Porównanie

This species differs from others of the genus by the parabolic outline of small goniodont with weakly incised distal margin, and not numerous (12–18) denticles. The specimen from the Early Givetian of the Rhenish Slate Mountains differs from E. romaneki in lacking tapering corners, having a shallower incision on the distal margin, and being shorter than wide.

Autekologia

Występowanie geograficzne

Set  VIII  of  the  Grzegorzowice  Beds  at Grzegorzowice, Zbrza; borehole Ogrodzieniec IG 2, depth: 1269.4 m, 1119.7 m, Cracow Upland, Poland; Set XIV of the Skały Beds at Skały, Holy Cross Mountains, Poland.

Zasięg czasowy

Early Eifelian Polygnathus partitus Zone; Late Eifelian.

Materiały muzealne

Holotype GIUS 4−618 Grz./378/10 and 314 specimens.

Literatura

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