Thalattosaurid

Thalattosaurid is a group of marine reptiles that lived during the Early to Middle Jurassic period, approximately between 175 to 165 million years ago. They belong to the family Thalattosauridae, a distinct group of sauropterygian aquatic reptiles.

These fish-like reptiles were characterized by their elongated bodies, typically reaching lengths of 1 to 3 meters. They had a distinctive combination of tetrapod-like features, such as limbs, and fish-like characteristics, such as gills and a streamlined body. Their skulls were relatively short, with prominent ridges on the snout and on top of the skull. Some species had more robust and club-shaped tails, potentially used for swimming and maneuverability.

Thalattosaurids had a highly specialized way of feeding and hunting. Their jaws were equipped with rows of conical teeth, ideal for catching and eating prey in the water. Many fossils show evidence of well-developed eyes, which likely played a crucial role in the hunt for prey. Some species had particularly developed lips and strong bite forces, which suggests they may have fed on large fish and other aquatic animals.

During their evolution, Thalattosaurids underwent various changes, leading to more robust and heavier forms. Some species developed fangs or tusks, whereas others developed large-scale sensory organs on their snout. This observation casts light on their ability to adapt to their aquatic environment, aiming to thrive in their geographical range.