Ketaspidurasuch

Ketaspidurasuchus is an extinct genus of crocodyliform belonging to the family Thalattosuchia, commonly referred to as marine crocodiles. Fossil remains of this genus have been discovered in the Late Jurassic period, dating back approximately 160 million years ago. The name *Ketaspidurasuchus* combines elements from the Greek language, with *ketos* meaning "monster of the sea," *aspidos* meaning "shield," *oura* meaning "tail," and *suchos* meaning "crocodile," reflecting its aquatic lifestyle and armored body.

Fossils of *Ketaspidurasuchus* have been primarily found in the United Kingdom, specifically in the Kimmeridge Clay Formation of Dorset. The most complete specimens include partial skulls, vertebrae, and limb bones, providing insights into its anatomy. Like other thalattosuchians, *Ketaspidurasuchus* was adapted for a fully marine existence, with streamlined bodies, reduced limbs, and possibly a flattened tail for efficient swimming.

The exact size of *Ketaspidurasuchus* is not well-documented due to limited fossil evidence, but it is estimated to have reached lengths of around 3 to 4 meters (9.8 to 13 feet). Its skull structure suggests a diet consisting of fish, squid, and possibly other marine invertebrates. The presence of teeth adapted for gripping and crushing indicates a versatile feeding strategy.

Ketaspidurasuchus is significant in the study of thalattosuchian evolution, offering clues about the diversification of marine reptiles during the Mesozoic Era. Its fossils contribute to understanding the ecological roles these predators played in Jurassic marine ecosystems, particularly in shallow coastal waters and open seas. Research on *Ketaspidurasuchus* continues to provide valuable insights into the adaptation and specialization of early marine reptiles.