In 2009, Young and de Andrade published a re-description of "Geosaurus", examining its relationships and the validity of species lumped into the genus. After performing a phylogenetic analysis of metriorhynchids, they found that many species were grouped in a paraphyletic manner or with the wrong genera. Specifically, they found that several species formerly classified as "Geosaurus", including "G. suevicus", "G. saltillense", "G. vignaudi", and "G. araucanensis" were actually examples of the related "Cricosaurus". "Rhacheosaurus gracilis", another long-snouted species, was also at one time considered a species of "Geosaurus" (as "G. gracilis").