The sex of many turtles, crocodilians, and other reptiles is determined by the temperature at which their eggs incubate.

Turtle shells evolved over the course of 300 million years, but self-defense wasn't the initial driver, researchers think.

And it was huge. The ancestor of today’s 20-foot great white shark was thought to be about 26 feet long, the authors of a ...

The ancestor of today’s great white shark was thought to be about eight metres long, the authors of a paper published in ...

Fossils from Qatar have revealed a small, newly identified sea cow species that lived in the Arabian Gulf more than 20 ...

The bonebed contains the 21-million-year-old remains of sea cows, sharks, barracuda-like fish, prehistoric dolphins and sea ...

Today, the Arabian Gulf is home to manatee-like marine mammals called dugongs that shape the seafloor as they graze on ...

Today, the Arabian Gulf is home to manatee-like marine mammals called dugongs that shape the seafloor as they graze on ...

An artistic reconstruction of a herd of ancient sea cows foraging on the seafloor. In southwest Qatar, fossils of a new species of ancient sea cow, Salwasiren qatarensis, were found in 21-million-year ...

Ancient sea cows played a vital role in maintaining healthy ecosystems more than 20 million years ago, a fossil site in Qatar ...