Unique Characters: Tail stout and shark-like, not demarcated from trunk or disc, with a narrow longitudinal fold along each side. Snout moderately short and obtuse to long and acute. Eyes and spiracles on top of head; spiracles immediately behind eyes and possessing pseudobranchial folds on anterior margin. Pelvic fins with single moderately expanded lobe. Two dorsal fins, first located posterior to tips of pelvic fins, and a well-developed caudal fin, lacking a well-defined lower lobe.
Similar Species: None.