Science ❯ Biology ❯ Evolution

Species Classification

Cariamiformes Darwinopterans Giraffe Subspecies Carcharodontosaurus Megaraptors Ca. Electrothrix yaqonensis Tyrannosaurids Taxonomy Plesiosauria Ornithischians Dinosauria Plesionectes longicollum Morphological Adaptations Xenoparity Extinct Species Common Names Corvidae Nanotyrannus lethaeus Fossil Evidence Theropods Tyrannosaurus rex Tyrannosauroids T.rex and relatives Tyrannosaur Evolution Felidae Evolution

Adult Nanotyrannus Identified in 'Dueling Dinosaurs' Fossil, Forcing Rethink of T. Rex Growth

Histology with distinctive anatomy points to a small-bodied tyrannosaur that reached maturity at near full size.

Nature Study Confirms Adult Nanotyrannus in 'Dueling Dinosaurs,' Upending T. rex Growth Models