Fossils of vertebrates have been found in great abundance in the continental and marine
early Late Cretaceous sediments of Southeastern Morocco for more than 50 years. About 80 …

The spinosaurids represent an enigmatic and highly unusual form of large tetanuran
theropods that were first identified in 1915. A recent flurry of discoveries and taxonomic …

Tetanuran theropods represent the majority of Mesozoic predatory dinosaur diversity and
the lineage leading to extant Aves. Thus their history is relevant to understanding the …

The geological and paleoenvironmental setting and the vertebrate taxonomy of the
fossiliferous, Cenomanian-age deltaic sediments in eastern Morocco, generally referred to …

For 150 million years, the skies didn't belong to birds--they belonged to the pterosaurs.
These flying reptiles, which include the pterodactyls, shared the world with the nonavian …

We describe adaptations for a semiaquatic lifestyle in the dinosaur Spinosaurus
aegyptiacus. These adaptations include retraction of the fleshy nostrils to a position near the …

Isolated theropod teeth are some of the most common fossils in the dinosaur fossil record
and are continually reported in the literature. Recently developed quantitative methods have …

Giant carnivorous dinosaurs such as Tyrannosaurus rex and abelisaurids are characterized
by highly reduced forelimbs that stand in contrast to their huge dimensions, massive skulls …

Abstract Megalosaurus bucklandii (Dinosauria: Theropoda), the oldest named dinosaur
taxon, from the Bathonian (Middle Jurassic) of England, is a valid taxon diagnosed by a …

Spinosaurids are some of the most enigmatic Mesozoic theropod dinosaurs due to their
unique adaptations to aquatic environments and their relative scarcity. Their taxonomy has …