Science ❯ Biology ❯ Evolution

Species Classification

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

Tiny Spanish Dinosaur Foskeia Pelendonum Formally Described, Recasting Parts of the Ornithischian Family Tree

A peer-reviewed analysis of scans and bone histology identifies a mature, highly specialized ornithopod whose provisional placement challenges existing views of plant‑eating dinosaur relationships.

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

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

Hyoid-Bone Study Confirms Nanotyrannus Was Its Own Tyrannosaur Species

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

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

Iberian Harvester Ant Queens Clone Another Species to Produce Workers

New Tarantula Genus Satyrex Unveiled With Record-Long Male Palps