Holotype: GIUS 4−439 Śni./1117/1

Adambulacral plate GIUS 4−708 Ska./736/1 from the proximal part of the arm, ventral view; Early Givetian, set XXV of Skały

Diagnoza

Adambulacral plates with a narrow blade lacking a pit on their dorsal surface. Ventral fossa for muscle attachment on the distal surface of ambulacral plate slight.

Porównanie

It differs from Umerophiura opiparia Boczarowski, 2001 by the chaotic arranged dorsal tubercles on the ambulacral plates, greater development of its ventral and distal surfaces of the ambulacral plates and by narrow, spoon−shaped adambulacral plates.

Autekologia

Występowanie geograficzne

Only known from the type locality.

Zasięg czasowy

Early Givetian, Polygnathus hemiansatus Zone 

Materiały muzealne

Holotype GIUS 4−439 Śni./1117/1 and 63 specimens.

Literatura

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