
T. Rex: Asian Ancestors Migrated to North America
New research suggests T. Rex's ancestors migrated from Asia to North America. Climate changes and extinction events likely influenced their massive size during the Late Cretaceous period.
New research suggests T. Rex's ancestors migrated from Asia to North America. Climate changes and extinction events likely influenced their massive size during the Late Cretaceous period.
A massive Mosasaurus hoffmanni vertebra fossil, potentially the largest in Mississippi, has been discovered. This sea dragon ruled the Cretaceous seas, preying on fish, sharks and other mosasaurs.
Dinosaurs likewise probably had very effective breathing thanks to air cavities within their light bones. These cavities assisted them take up oxygen during both breathing and exhalation. This may have contributed to their development to such gigantic sizes. Some dinosaurs might have made use of feathers to stay warm, court companions and even fly. For...