Fig. 3
From: First report of paired ventral endites in a hurdiid radiodont
Hurdiid frontal appendages bearing setae (only most prominent setae drawn). a and b Pahvantia hastata from the Wheeler Formation, Utah, USA, KUMIP 314089. c and d Aegirocassis benmoulae from the Fezouata Formation, Morocco, YPM 527123. Abbreviations: ds, dorsal spines; five en, five subequal endites on first five podomeres of distal articulated region; s, shaft; sen, shaft endite. Scale bars: a, b = 2 mm; c, d = 10 mm