Genital plate GIUS 4−561 Mrz./856/3, Late Givetian of Marzysz Ic/5, outer view

Fragment of articulated ambulacral zone from the middle part of test, holotype GIUS4−568 Mrz./980/1 from Late Givetian of Marzysz II/W/6; lateral and outer view.

Madreporite plate GIUS 4−587 Mrz./987/1; Late Givetian of Marzysz, Holy Cross Mountains, samples Marzysz II/15; outer and inner view.

Diagnoza

Inner side of ambulacral plates with long, lingulate process.

Porównanie

The species differs from A. montanus from the Late Devonian of Fairholme Formation in Alberta in having longer inner processes, and narrower ambulacral plates. Interambulacral plate sculpture in A. montanus is more pronounced and there are more secondary tubercles (in A. devonicus the main tubercle is commonly surrounded by five secondary tubercles). The largest ambulacral plates (probably oral) of A. devonicus are very massive and the other ambulacrals are of similar shape to Archaeocidaris, but the latter lack processes. Among the lepidocentrid echinoids only the Late Carboniferous Pholidechinus brauni has a similar type of pyramid.

Autekologia

Występowanie geograficzne

Sets XVII, XVIII, XIX of Skały; sets XX, XXI, XXIII,XXIV, XXV of Skały; set: XXVII, XXVIII of Skały; set B of Laskowa; set A of Szydłówek; set B of Jaźwica; set A of Górno, set B of Czarnów; Wola Jachowa; set A of Wietrznia Ia; set A of Wietrznia II; outcrop I, trench II at Marzysz; set B of Posłowice; sets C, G of SowieGórki; sets B, C of Stokówka; set B of Zbrza; set A of Góra Zamkowa, Chęciny; set B of Wietrznia Ic; set C of Wietrznia Id, Ie; set B of Góra Cmentarna; set D of Stokówka; Kowala I; set F of GóraZamkowa, Chęciny;  sets B, C of the railroad cutting, Kowala;  sets C, D of Górno; Radlin; sets C, D of Wietrznia II; set A of Kadzielnia; Szczukowskie Górki; set D of the railroad cutting, Kowala; Sobiekurów, Holy Cross Mountains, Poland.

Zasięg czasowy

Late Eifelian to Late Frasnian.

Materiały muzealne

Holotype: GIUS 4−568 Mrz./980/1 and > 6431 specimens.

Literatura

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