Holotype marginal ossicle GIUS 4−562 Mrz./150/1 from the Late Givetian of Marzysz II/W/0; ventral, lateral, dorsal, distal and proximal view.

Diagnoza

Marginals are trapezium−shaped. At the lateral articulation surface there are alveolae and weakly developed teeth (up to three), commonly united into strips. 

Porównanie

The marginals do not resemble those of any known species of cyclocystoids, although the general plan is rather close to those of Apycnodiscus.

Autekologia

Występowanie geograficzne

Set B of Jaźwica, outcrop I, trench II at Marzysz and Set C of Sowie Górki, Holy Cross Mountains, Poland. 

Zasięg czasowy

Middle to Late Givetian.

Materiały muzealne

Holotype: GIUS 4−562 Mrz./150/1 and 49 specimens (marginals and radial plates).

Literatura

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