Glyphis glyphis (Müller & Henle, 1839)

Description (after Compagno, White & Last, 2008): Teeth relatively few, in 27 in holotype (26–29, n=4)/27 (27–29) rows or 54 (53–58) total rows (both jaws). Teeth not arranged in diagonal files, no toothless spaces at symphysis. Teeth highly differentiated in upper and lower jaws and along jaws, tooth row groups include upper and lower medials (M), anteriorised lower symphysials (AS), and anteriors (A), laterals (L), and posteriors (P) in both jaws. Tooth formula (n=5): upper jaw (13–14) + 1 (0–1) + 13 (13–14); lower jaw (13) + 1 (1–2) + 13 (13–14). Upper teeth with tall, broad, flat, triangular, blade-like, erect to semi-oblique cusps (except posteriors), distal and mesial edges serrated (except for most posteriors); unnotched mesial edges; slightly arched roots. Lower teeth with narrow, tall, erect, slightly hooked (anteriorised symphysial and anteriors) to straight cusps; first few anterior teeth of large specimens hastate with serrated cutting edges confined to spear-like tips (not obvious in small specimens); sometimes with very small cusplets on crown foot; low mesial and distal shoulders or blades (except in posteriors). 

Material: Northern Australia, unnamed river, TL and sex unkown (Pre-Convention specimen)

Images: collection and © Jesco Seifert, Germany, images shows the correct position of the teeth 

 Glyphis glyphis