A new troodontid dinosaur, Hypnovenator matsubaraetoheorum gen. et sp. nov., is
described based on an articulated postcranial skeleton recovered from the fluvial deposits of …

All described feathers in nonavian theropods are composite structures formed by multiple
filaments. They closely resemble relatively advanced stages predicted by developmental …

This contribution presents the forelimb muscular arrangement of sauropodomorph dinosaurs
as inferred by comparisons with living archosaurs (crocodiles and birds) following the Extant …

Teeth evolved early in vertebrate evolution, and their morphology reflects important
specializations in diet and ecology among species. The toothless jaws (edentulism) in extant …

Eotyrannus lengi Hutt et al., 2001 from the Lower Cretaceous Wessex Formation (part of the
Wealden Supergroup) of the Isle of Wight, southern England, is described in detail …

Therizinosaurs are a group of herbivorous theropod dinosaurs from the Cretaceous of North
America and Asia, best known for their iconically large and elongate manual claws …

Background Oviraptorids, like many other dinosaurs, clearly had a complex pattern of
skeletal growth involving numerous morphological changes. However, many ontogenetic …

We describe the first diagnostic dinosaur fossil from Washington State. The specimen, which
consists of a proximal left femur, was recovered from the shallow marine rocks of the Upper …

There is little consensus on the systematic position of the colossal theropod dinosaur
Chilantaisaurus tashuikouensis from the Cretaceous (Aptian–? Albian or Upper Cretaceous) …

The fossil record of dinosaurs from the Early Cretaceous of Eastern North America is scant,
especially since a few stratigraphic units from the east are fossiliferous. Among these …