All articles tagged with #campanian
Researchers confirm the first dinosaur bone found on Antarctica is a fragmentary sauropod vertebra dating to the Late Cretaceous Campanian, likely a six to seven meter titanosaur. Collected in 1985 on James Ross Island, the incomplete bone expands the continent's dinosaur record and hints at ancient connections with South America and Zealandia.
A 74-million-year-old shinbone from New Mexico reveals the oldest known giant tyrannosaur in North America, likely a close relative of Tyrannosaurus rex and suggesting large tyrannosaurids appeared earlier in the Campanian than previously thought. The bone’s size—about 84% as long and 78% as wide as Sue—gives an estimated mass around 4,700 kg (about 5.2 tons). Researchers note the find may trace Tyrannosaurus origins to southern North America, though more remains are needed to confirm its exact place in the tyrannosaur family tree.