Suborder Leptognathina Spencer and Wright 1966 (sea star)
Full reference: W. K. Spencer and C. W. Wright. 1966. Asterozoans. Treatise on Invertebrate Paleontology, Part U Echinodermata 3 U(3):U4-U107
Parent taxon: Spinulosida according to W. K. Spencer and C. W. Wright 1966
See also Hess 1972
Sister taxa: Chevronida, Echinasteridae, Eugnathina, Plumasteridae
Subtaxa: Valvasteridae
Ecology: epifaunal carnivore-suspension feeder
Distribution: found only at Asteroidea, Schlotheimia angulata bed, Mercuer, Ardèche (Jurassic of France)