-
eye oval
hard crest over eyeD1 over/behind pelvic
D2 & A largeC: weak/absent lower lobe -
eye roundD1 between pectoral & pelvic basesC asymmetric, strong lower lobe, upper edge rippled, pits at basemouth to well behind eyes
teeth = sharp blades -
tail base > head+ body
spiracle large2 Ds similar size & shapemouth small, transverseA well behind D2, v close to C -
small, slenderD1 short, base nearer pelvic than pectoralC no lower lobeteeth very small, similar on both jaws, with multiple points
rear teeth = combswith A