Research has shown that two of the three large groups of dinosaurs ... benefits that the dinosaurs would have received from thermoregulation. “Higher metabolic activity might have meant ...

presenting evidence of tracks of sauropods (enormous plant-eating dinosaurs) and possibly ornithopods (another group of large herbivorous dinosaurs). The tracks were found in a rugged, remote ...

It’s an unlikely relationship, but the humble pigeon is a descendant of the group ... dinosaur, was actually feathered.” “The first discoveries of dinosaurs were made in the early nineteenth century.

Our brief introduction to dinosaurs reveals a key feature that gave them an advantage over other prehistoric reptiles. Dinosaurs are a group of reptiles that dominated ... had two holes behind the eye ...

"We analyzed the fossil record and found that the quality of the record of four groups ... dinosaur clades Ankylosauridae (armored herbivores such as club-tailed Ankylosaurus), Ceratopsidae (large ...

Lesothosaurus diagnosticus was one of the most primitive and earliest ornithischians, or "bird-hipped" dinosaurs. Ornithischians were one of the two major groups ... with very large eyes, short ...

Ranging in size from large chunks to tiny beads, impact ejecta are common at or near the Cretaceous/Tertiary (KT) boundary, the geological layer that defines the dinosaur extinction. Fractured ...

Jurassic dinosaurs milled about ... trackmakers are identified as large theropods similar to Megalosaurus and early-branching members of the neosauropod group similar to Cetiosaurus, both of ...