Dinosaurs likely had similar chromosome patterns to birds, contributing to their diverse appearance and function, and their ability to survive multiple extinction events.

Dinosaurs: Comparative Cytogenomics of Their Reptile Cousins and Avian Descendants

The early ornithodirans (Kongonaphon kely) from the Triassic of Madagascar show a miniaturization event near the common ancestor of dinosaurs and pterosaurs, potentially explaining the origins of flight in pterosaurs and fuzzy integu

A tiny ornithodiran archosaur from the Triassic of Madagascar and the role of miniaturization in dinosaur and pterosaur ancestry

Hesperonychus elizabethae is the first microraptorine known from North America, suggesting a significant carnivore community in the Late Cretaceous Dinosaur Park Formation of Alberta, Canada.

A microraptorine (Dinosauria–Dromaeosauridae) from the Late Cretaceous of North America

This new Late Triassic lagerpetid and saurischian dinosaur fossil, found in Brazil, reveals how dinosaurs acquired their anatomical traits and feeding behavior, revealing the most basal Sauropodomorpha.

A Unique Late Triassic Dinosauromorph Assemblage Reveals Dinosaur Ancestral Anatomy and Diet

Dinosaurs are a single monophyletic group with high aerobic exercise metabolism, justifying a new class, Dinosauria, alongside birds and cursorial mammals.

Dinosaur Monophyly and a New Class of Vertebrates

The new sauropodomorph specimen from southern Brazil provides evidence for an early increase in body size in Sauropodomorpha, with a weight of 3.2 times heavier than Buriolestes schultzi, the earliest-branching sauropod.

A Sauropodomorph (Dinosauria, Saurischia) Specimen from the Upper Triassic of Southern Brazil and the Early Increase in Size in Sauropodomorpha

The Ornithoscelida hypothesis is not the final word on the dinosaur family tree, as there is still great uncertainty about its basic structure and origin.

Untangling the dinosaur family tree

Giganotosaums carolinii is a new, primitive giant carnivorous dinosaur from the Upper Cretaceous of Patagonia, representing a primitive evolutionary iteration of large theropods and potentially the world's largest predatory dinosaur.

A new giant carnivorous dinosaur from the Cretaceous of Patagonia

Dinosaurs' ascent from a marginal group of reptiles in the Late Triassic to the preeminent terrestrial vertebrates of the Jurassic and Cretaceous was a two-stage process, with their expansion in diversity and abundance only after the extinction of other reptile groups.

The origin and early radiation of dinosaurs

Dinosaurs played a crucial role in shaping Jurassic-Cretaceous ecosystems and contributed to the evolution of the avian body plan, but much remains unknown due to incomplete fossil records.

Dinosaur Macroevolution and Macroecology

The first dinosaur discovery is often attributed to British geologist Gideon Algernon Mantell, but recent research suggests that an American find in 1787 may be the earliest.

The Earliest Discoveries of Dinosaurs

Herbivorous dinosaurs dominated Late Triassic-Cretaceous terrestrial ecosystems, with niche partitioning reducing competition and large body size promoting low plant productivity.

Paleobiology of Herbivorous Dinosaurs

A new genus and species, Tamarro insperatus, has been identified from the latest Maastrichtian of Spain, suggesting it may have migrated from Asia to the Ibero-Armorican island during the Maastrichtian dispersal events.

A fast-growing basal troodontid (Dinosauria: Theropoda) from the latest Cretaceous of Europe

Dinosaurs' rise to land was a haphazard, opportunistic process, with no evidence for co-evolution between predators and prey or herbivores and flowering plants.

The evolution of dinosaurs.

Thecospondylus Daviesi's cervical vertebra shows affinity with Ccelurus fragilis, but the author proposes combining Sauropoda and Theropoda into a single order, the Theropoda.

Classification of the Dinosauria

Dinosaurs evolved from a common ancestor with birds and Triceratops, with the oldest fossils dating to the Late Triassic.

The origin and early evolution of dinosaurs

Gnathovorax cabreirai, a new herrerasaurid dinosaur, confirms the monophyletic status of the group and provides insights into early carnivorous dinosaur ecomorphology.

Gnathovorax cabreirai: a new early dinosaur and the origin and initial radiation of predatory dinosaurs

Dreadnoughtus schrani is the most complete titanosaur yet discovered, providing new insights into their anatomy and evolutionary history.

A Gigantic, Exceptionally Complete Titanosaurian Sauropod Dinosaur from Southern Patagonia, Argentina

Sauropod dinosaurs can increase in body size due to selective advantages, but resource availability and global physicochemical parameters may not have been different enough in the Mesozoic for sauropod gigantism.

Biology of the sauropod dinosaurs: the evolution of gigantism

Dinosaurs have lived for 900-1200 genera, with the fossil record being 25% complete, and their diversity peaked in the Maastrichtian near the peak of their historic diversity.

Counting dinosaurs: how many kinds were there?

These studies suggest that birds and pterosaurs are related to dinosaurs.