The taxonomic utility of forefin morphology in Lower Jurassic ichthyosaurs:ProtoichthyosaurusandIchthyosaurus Lomax, Dean R. ; Massare, Judy A. ; Mistry, Rashmiben T. Abstract Publication: Journal of Vertebrate Paleontology Pub Date: September 2017 DOI: 10.1080/02724634.2017.1361433 Bibcode: 2017JVPal..37E1433L