Dinosaurbird

Dinosaurbird is not a formal taxonomic term. In science communication and in some fiction, it is used to emphasize the close relationship between birds and dinosaurs and to remind readers that modern birds are descendants of theropod dinosaurs.

In scientific terms, the concept is redundant, because birds are a living lineage within the dinosaur clade Theropoda, and are classified as Aves. This reflects the evolutionary continuity from non-avian dinosaurs to the birds that survive today.

Fossil evidence shows feathered theropods such as Archaeopteryx, Microraptor, and Anchiornis that illuminate stages of flight evolution. These fossils document transitions in anatomy and locomotion that culminated in modern avian flight capabilities.

Feathers and flight-related skeletal changes document the transition; modern birds retain hollow bones, a furcula, and a highly efficient respiratory system. Such traits illustrate the deep-rooted connections between birds and their dinosaurian ancestors.

Usage and reception: The term is common in introductory biology and popular science to illustrate the dinosaur-bird connection; it is not a formal taxonomic designation. It serves as a mnemonic device and educational shorthand for understanding the evolutionary relationship between dinosaurs and birds.