Linguaphillipsia rouchelensis (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 : 35-36

Linguaphillipsia rouchelensis (Mitchell 1918)

1892a Phillipsia sp. indet.; Etheridge Jr., p. 129, pl. 21, figs. 6–7.

1918 Phillipsia rouchelensis Mitchell ; p. 473, pl. 48, figs. 4–7.

1971 Phillipsia rouchelensis ; Fletcher, p. 116.

1972 Conophillipsia? rouchelensis ; Hahn & Hahn, p. 386–387.

1975 Linguaphillipsia elongata rouchelensis ; Engel & Morris, p. 170–173, pl. 2, figs. 17–21.

Lectotype. AMF35855 (internal mould of pygidium).

Paralectotype material. AMF35696 (internal pygidium), AMF35747 (internal pygidium), AMF35850 (internal pygidium).

Locality. Type—Given only as Binge Berry Rouchel Brook NSW in Engel & Morris (1975). Emended diagnosis. Pygidium with 18–19 axial rings, 14 pleural ribs; convex pygidial border; elongated semi-circular shape.

Remarks. Engel & Morris (1975) re-diagnosed the species Phillipsia rouchelensis Mitchell 1918 as a subspecies of Linguaphillipsia elongata . No cephala were ever found for L. elongata rouchelensis , making comparisons difficult. The material of L. elongata rouchelensis described by Engel & Morris has a semi-circularshaped pygidium, fewer pygidial axial rings and pleural ribs, and a wider, more convex pygidial border, compared with specimens of L. elongata elongata . Based on these differences in the pygidia, the two subspecies have been elevated to species rank herein.