Science ❯ Biology ❯ Evolution

Species Classification

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

Hyoid-Bone Study Confirms Nanotyrannus Was Its Own Tyrannosaur Species

By reading growth rings in a throat bone, researchers show the holotype had stopped growing, resolving a decades-long identification question.

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