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Evolution

Mutualism Adaptation Cell & Microbiology Species Diversity Species Classification Species Competition Predatory Behavior Insular Evolution Birds Domestication Gigantism Paleontology Terrestrial Adaptation Bird Classification

Study Finds T. Rex Reached Full Size at 35–40, Reshaping Its Life History

Polarized-light imaging of 17 leg bones revealed hidden growth rings that shift T. rex’s peak size to late middle age.

New Study Finds T. Rex Reached Full Size Around Age 40

Study Finds Urban Raccoons Have Shorter Snouts, Hinting at Early Domestication