Diagnoza

Porównanie

Spines have a narrow and smooth main ridge, perforated laterally. Lateral laminae are also perforated by circular pores. The basal part of the spine is rounded and has a shallow depression with three triangular pores at its bottom. Scales are leaf−shaped but with forms intermediate in shape to spines. The axis of an element is distinct only in intermediate forms. All the scales are perforated, and with the exception of “intermediate” forms the pattern ofperforation is chaotic. The basal part is flattened.

Scales resemble the distal tentacle scales of some modern ophiuroids (e.g. Astrodendrum) although the latter are imperforate.

Autekologia

Występowanie geograficzne

Set F of Psie Górki, Kielce, Holy Cross Mountains, Poland.

Zasięg czasowy

Middle Frasnian

Materiały muzealne

66 specimens (spines and lyre−like scales). Numbers of illustrated specimens: GIUS 4−599 Psi./509/2, GIUS 4−599 Psi./509/4, GIUS 4−599 Psi./510/4, GIUS 4−599 Psi./510/2, GIUS 4−599 Psi./510/6, GIUS 4−599 Psi./510/3, GIUS 4−599 Psi./510/1, GIUS4−599 Psi./510/5.

Literatura

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