Australokaskia convexicaudata (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 : 27-29

Australokaskia convexicaudata (Mitchell 1918)

1918 Griffithides convexicaudatus Mitchell ; p. 475–479, pl. 46, fig. 13, pl. 48, figs. 1–2. non 1922 Phillipsia convexicaudata ; Mitchell, p. 535–536, pl. 54, figs. 8–10.

non 1963 Griffithides ? convexicaudatus ; Campbell & Engel, p. 112–113, pl. 8, figs. 5–10. 1972 Cummingella convexicaudata ; Hahn & Hahn, p. 346.

1985 Cummingella (Cummingella) convexicaudata ; Hahn et al., p. 54.

1995 Australokaskia (Longilobus) convexicaudata ; Engel & Morris, p. 196–198, pl. 1, figs. 10–27.

Lectotype. AMF28626 (external mould of dorsal shield missing half the cephalon).

Topotype material. AMF90346 (external cephalon), AMF90443a/b (external/internal cephalon), AMF90444a/b (external/internal cranidium), AMF90445 (internal cranidium), AMF90446 (internal cranidium), AMF90447 (internal cranidium), AMF90448a/b (external/internal librigena), AMF90449 (internal librigena), AMF90450a/b (external/internal pygidium), AMF90451 (internal pygidium), AMF90452 (internal pygidium).

Locality. NU L 1039.

Emended diagnosis. Glabella widest near β, covers anterior margin; L1 short, more or less triangular. Pygidium convex, with 11 axial rings, up to 6 pleural ribs; pleurae become obsolete posteriorly.

Remarks. The above diagnosis was emended as the antennal pores [= fossulae], described as being present by Engel & Morris (1995), were not seen when assessing the external mould specimens.