Russellosaurus

Russellosaurus is an extinct genus of tethysaurine mosasauroid from the Late Cretaceous of North America. The genus was described from a skull discovered in an exposure of the Arcadia Park Shale at Cedar Hill, Dallas County in the south-central part of the DFW Metroplex in Texas, United States. The skull was found in 1992 by a member of the Dallas Paleontological Society, who then donated to the museum. Other fragmentary specimens of Russellosaurus have been recovered from the slightly older Kamp Ranch Limestone at two other localities in the Dallas area.