FIG. 5. — Asterolepis alticristata n in Asterolepis alticristata n. sp. (Antiarchi) from the Upper Devonian (Frasnian) of Nunavut, Canada, and a report on the antiarch diversity of the Fram Formation

FIG. 5. — Asterolepis alticristata n. sp.: A-C, NUFV 892, left side of articulated partial thoracic skeleton in visceral (A, photograph; A', labeled illustration), left lateral (B, photograph; B', labeled illustration), and cranial (C, photograph; C', labeled illustration) views; D, NUFV 895, right mixilateral plate in dermal view. Abbreviations: ADL, anterior dorsolateral plate; AVL, anterior ventrolateral; c1, central 1 plate; cd, area overlapped by ventral thoracic plates; cd.AMD, area overlapped by the anterior median dorsal plate; cr.d, crescent-shaped depression; cv.Mxl, area overlapping the mixilateral plate; dlr, dorsolateral ridge; f.ax, foramen axillaris; lcg, main lateral line groove; MV, median ventral plate; pr.b, processus brachialis; pr.o, processus obstans. Scale bar: 5 cm.