Titanosaur fossils reveal dinosaur presence in Antarctica and high-latitude nesting

Scientists have confirmed the discovery of the first dinosaur bone ever found in Antarctica, a tail vertebra belonging to a Titanosaur. The specimen, which had been stored in a British Antarctic Survey collection for forty years, was originally collected on James Ross Island in 1985. Researchers estimate the dinosaur was approximately 23 feet in length and lived roughly 82 million years ago during the Late Cretaceous Period, a time when Antarctica was covered in dense forests rather than ice.

In a related finding regarding dinosaur reproduction, fossil eggshells from southern Patagonia indicate that Titanosaurs were nesting at high latitudes between 55° and 60° south during the Late Cretaceous. Analysis of 255 eggshell fragments from the Chorrillo Formation suggests these giant sauropods used flexible reproductive strategies to survive in cooler environments. The high porosity of the shells indicates that eggs were likely buried in nests where heat from decaying vegetation provided necessary incubation.