Nostolepis, Burrow, 2003

Burrow, Carole J., 2003, Earliest Devonian gnathostome microremains from central New South Wales (Australia), Geodiversitas 25 (2), pp. 273-288 : 278

“ Nostolepis ” guangxiensis Wang, 1992

HOLOTYPE. — Scale IVPP V9745.1 (Wang 1992: pl. I, fig. 3a, b) from the Ertang Formation (early Emsian), Wuxuan County, Guangxi, China.

MATERIAL EXAMINED ( Table 1). — Four scales in sample C937.

DESCRIPTION

The scales (not figured) are 0.6-0.8 mm wide and long, with a flat crown bearing about five short, regularly-spaced ridges along the anterior margin; posterior margins of the crown are straight and smooth. The crown is smaller than the base; short diagonal ridges radiate down the lateral faces of the crown from its posterior corner. The base is moderately swollen.

REMARKS

The type scales of “ Nostolepis ” guangxiensis are from the Lower Devonian Ertang Formation of Guangxi, China (Wang 1992: pl. 1, figs 3-5). Burrow (1997, 2001, 2002) described scales of this form from numerous eastern Australian localities of late Lochkovian-early Emsian age. The scales from C937 fit the most common morphotype of scales found in the Connemarra Formation (late Lochkovian-early Pragian), central New South Wales ( Burrow 1997, 2001, 2002; Burrow in Basden et al. 2000).