Scientists Confirm 1985 Fossil as Antarctica's First Dinosaur Bone, a 10cm Titanosaur Vertebra
Updated
Updated · bbc.co.uk · Jun 29
Scientists Confirm 1985 Fossil as Antarctica's First Dinosaur Bone, a 10cm Titanosaur Vertebra
3 articles · Updated · bbc.co.uk · Jun 29
Summary
A fossil collected on James Ross Island in 1985 and left in a British Antarctic Survey drawer for 40 years has been identified as Antarctica's first known dinosaur bone.
Dr. Mark Evans flagged the specimen during a collections review, and Natural History Museum palaeontologist Paul Barrett confirmed its ball-and-socket shape marks it as a Titanosaur tail vertebra.
The bone is about 10cm wide; researchers estimate the animal was roughly 7m long, far smaller than the biggest titanosaurs, which could reach 35m and 60 tonnes.
The vertebra dates to about 82 million years ago, when Antarctica was forested rather than ice-covered, adding rare evidence of dinosaur life on a continent with a sparse fossil record.
If giant dinosaurs roamed a forested Antarctica, what other creatures shared this lost, green polar world?
This fossil reveals a once-tropical Antarctica. What can it teach us about Earth’s capacity for extreme climate transformation?
What other revolutionary discoveries are hiding forgotten on museum shelves, waiting for a second look?
2024 Breakthrough: First Dinosaur Bone Identified in Antarctica Sheds Light on Titanosaur Dispersal and Prehistoric Ecosystems
Overview
In 2024, scientists confirmed Antarctica's first definitive dinosaur bone—a titanosaurian caudal vertebra—from James Ross Island, dating to the Cretaceous Campanian period. This bone, found in the Santa Marta Formation, belongs to the giant sauropod group Titanosauria, which were among the largest land animals. Historically, Antarctica has yielded very few dinosaur fossils, with only about six taxa described, making this discovery a vital addition to our understanding of ancient Gondwana. The identification of this vertebra not only fills a major gap in the continent's fossil record but also highlights the global connections of dinosaur evolution.