Phoxanthus

Phoxanthus is a genus of extinct marine reptiles belonging to the family Pliosauridae, a group of short-necked plesiosaurs. Fossils of Phoxanthus have been discovered in the United Kingdom, specifically from the Jurassic period. The genus is known from fragmentary remains, primarily jaw elements and teeth, which provide insights into its diet and morphology.

The teeth of Phoxanthus are robust and conical, suggesting a predatory lifestyle. They were likely used to grasp and tear prey, which may have included fish and other marine animals. The jaw structure indicates a powerful bite force, characteristic of pliosaurs. Due to the limited fossil material, the full anatomy and size of Phoxanthus remain largely unknown. However, based on related pliosaurs, it is inferred to have been a formidable marine predator.

The discovery of Phoxanthus contributes to our understanding of the diversity and evolution of pliosaurs during the Jurassic. Its presence in the fossil record highlights the rich marine ecosystems that existed millions of years ago. Further discoveries are needed to provide a more complete picture of this ancient reptile.