†Platypterna gracillima Hitchcock 1858 (saurischian)
Belongs to Platypterna according to R. S. Lull 1904
Sister taxa: Platypterna concamerata, Platypterna deanii, Platypterna delicatula, Platypterna digitigrada, Platypterna lockatong, Platypterna recta, Platypterna tenuis, Platypterna varica
Type specimen: Its type locality is Lily Pond Quarry, Gill, which is in a Hettangian fluvial-lacustrine shale/sandstone in the Turners Falls Formation of Massachusetts
Ecology: