Australokaskia coulteri (Mitchell 1918)

Vanderlaan, Tegan A. & Ebach, Malte C., 2015, A review of the Carboniferous and Permian trilobites of Australia, Zootaxa 3926 (1), pp. 1-56 : 27

Australokaskia coulteri (Mitchell 1918)

1918 Phillipsia coulteri Mitchell ; p. 448–449, pl. 46, figs. 6–10.

1984 Paladin (Kaskia) cf. arduennensis ; Engel & Morris, p. 33.

1986 Paladin (Kaskia) cf. arduennensis ; Hahn et al., p. 99.

1994 Australokaskia (Australokaskia) coulteri ; Engel & Morris, p. 84–86, pl. 1, figs. 10–23.

Holotype. AMF28627 (internal mould of dorsal shield).

Paratype material. From NU L456: AMF85469 (internal cranidium), AMF85473 (partial librigena and partial external pygidium), AMF85474 (internal cranidium), AMF85476 (internal librigena), AMF85481 (internal pygidium), AMF90275 (external cranidium), AMF90276a/b (external/internal cephalon), AMF90277 (external cranidium), AMF90278 (internal cranidium), AMF90279 (internal cranidium), AMF90280a/b (external/internal cranidium, librigena and pygidium), AMF90281 (internal librigena), AMF90282 (external pygidium), AMF90283 (external pygidium), AMF90284a/b (external/internal pygidium), AMF90285 (internal pygidium), AMF90286 (external hypostome),. From NU L359: AMF90287 (internal cranidium), AMF90288 (external pygidium), AMF90289 (internal cranidium), AMF90338 (external pygidium),—From NU L 375, AMF90290 (internal cranidium), AMF90291 (external pygidium, cranidium and hypostome), AMF90292 (internal pygidium). From NU L672: AMF90293 (internal librigena). From NU L740: AMF90294 (internal pygidium).

Locality. Type—NU L404. Other—NU L740, NU L456, NU L375, NU L359, NU L672.

Emended diagnosis. β – β approximate to δ – δ and occipital furrow; long eyes, about half glabellar length, narrow. Pygidium with 10–11 axial rings, 6–7 pleural ribs; wide border with distinct furrow.

Remarks. Engel & Morris (1994) described in detail the distinct pygidial ornament in their original diagnosis, which is not visible on external moulds. The diagnosis has been emended to allow for this fact.