Grifftaylor antarcticus was named by Young and Long (2014) [A phlyctaeniid with a trunk-armour in which the PDL is longer than high (L/B index ~125); sensory groove reaches or almost reaches the posterior margin, with slight inflection at PDL ossification centre, passing anteriorly off the bone at or near ventral edge ofADLoverlap area. Relatively large subrectangular PMD plate (approaching half the length of PDL), which is about as wide as long, and lacks lateral corners. Length of AL plate ~130% its height. AVL plate with long spinal margin oriented at ~22
to the midline; lateral lamina of AVL enclosing pectoral fenestra posteriorly. PVL relatively short, ~70% AVL length; AMV probably narrow, and of similar length to PMV. Dermal ornament of crowded tubercles, coarser on PVL than AVL, some areas showing strongly reticulate ridges formed by aligned tubercles.]. Its type specimen is ANU V2162, a partial skull (a left PDL plate preserved in part and counterpart), and it is a 3D body fossil. Its type locality is Young et al 1992 Devonian Fish Locality 11, which is in an Emsian/Givetian marine siltstone/shale in the Aztec Siltstone Formation of Antarctica.