Reptilia - Ichthyosauria - Ophthalmosauridae

Alternative combinations: Ichthyosaurus australis, Mixosaurus hectori

Synonyms: Ichthyosaurus marathonensis Etheridge 1888, Myopterygius australis Teichert and Matheson 1944, Myopterygius marathonensis Huene 1922, Platypterygius longmani Wade 1990

Belongs to Platypterygius according to V. Fischer et al. 2013

Sister taxa: Platypterygius americanus, Platypterygius bannovkensis, Platypterygius bedengensis, Platypterygius birjukovi, Platypterygius campylodon, Platypterygius compylodon, Platypterygius hauthali, Platypterygius hercynicus, Platypterygius kiprijanoffi, Platypterygius ochevi, Platypterygius platydactylus, Platypterygius sachicarum

Type specimens:

• Platypterygius australis: MV P12989. Its type locality is Amuri Bluff (=Hamuri Bluff), which is in a Campanian/Maastrichtian basinal (siliciclastic) sandstone in the Conway Formation of New Zealand.
• Ichthyosaurus marathonensis:
• Myopterygius australis:
• Myopterygius marathonensis:
• Platypterygius longmani: QMF2453, a partial skull. Its type locality is Telemon lease, Dunluce Station, which is in an Albian marine carbonate in the Toolebuc Formation of Australia.