Reviresini

Reviresini is a genus of extinct marine reptiles belonging to the order Plesiosauria. These creatures lived during the Late Cretaceous period, approximately 70 to 66 million years ago. The genus was first described in 1948 by Charles Mortram Woodford based on fossil remains discovered in the United States. Reviresini is characterized by certain features of its vertebral anatomy and limb structure, distinguishing it from other pliosaurid plesiosaurs.

Fossils attributed to Reviresini have been found primarily in North America, specifically in the Western Interior Seaway. These marine reptiles were likely apex predators in their environment, inhabiting the shallow, warm waters that covered much of the continent during the Cretaceous. Their diet would have consisted of fish, ammonites, and possibly other marine reptiles. Like other pliosaurs, Reviresini possessed a stocky body, a relatively short neck compared to long-necked plesiosaurs, and powerful flippers used for propulsion and maneuvering. The exact number of valid species within the genus has been a subject of scientific discussion and revision over time. The extinction of Reviresini, along with many other species, is associated with the Cretaceous-Paleogene extinction event.