Gulosaurus
Gulosaurus is an extinct genus of basal grippidian ichthyopterygian known from the Early Triassic Vega-Phroso Siltstone Member of the Sulphur Mountain Formation of east-central British Columbia, Canada. "Gulosaurus" was first named by Robin S. Cuthbertson, Anthony P. Russell and Jason S. Anderson in 2013 and the type species is "Gulosaurus helmi". The name means 'Helm's wolverine lizard' and refers to the Wolverine Nordic and Mountain Society, who maintain the area around Wapiti Lake where it was found, and to Dr Charles Helm, who is a leading paleontologist around this same area. Originally "Gulosaurus" was thought to  be either "Grippia longirostris" or "Parvinatator wapitiensis," but as the fossil was incomplete it was uncertain which. In 2013, the other half of the fossil, including its skull, was discovered and this proved it to be a new species entirely, closely related to "Grippia" and very similar. Features. Overall, "Gulosaurus" was similar to "Grippia." It was the same size, around 1.5 meters long, and much of the skeleton was the same, namely the ribs and centrum discovered. Also like "Grippia", it had pentadactyl limbs rather than exhibiting polyphalangy, as many later ichthyopterygians did. Most of the flipper structure was very  similar apart from the first metacarpal, which had a notched peripheral shaft in "Gulosaurus" but was lunate in "Grippia." The skull of "Gulosaurus" was also very different to that of "Grippia" - it had cylindrical anterior teeth, although as no "Grippia" snouts have been discovered, it remains unknown if this was different. The skull also exhibited postfrontal-frontal contact at the rostral limit of the anterior margin of the supratemporal terrace. Phylogeny. Below is a cladogram modified from Cuthbertson "et al.", 2013.