American Mesozoic Mammalia

First Haramiyid (Mammalia, Allotheria) from the Mesozoic of Gondwana

A haramiyid tooth is described from the Upper Jurassic of Tendaguru in southwestern Tanzania, East Africa. The specimen, identified tentatively as a lower posterior premolar, is made the holotype of a new taxon, Staffia aenigmatica gen . e t sp. nov. which is placed in the Haramiyida . Staffa gen . nov. shares several features with Thomasia from the Late Triassic to Early Jurassic of Europe, no...

The Mesozoic Lacustrine Revolution

The Mesozoic lacustrine revolution (MLR) represents a major evolutionary event in the continental realm (Cohen 2003 ). The decline in taxic diversity at the family level in lacustrine environments that took place during the late Paleozoic–Middle Triassic was reversed later in the Mesozoic, with diversifi cation seeming to have continued to the Quaternary, although potential biases may have affe...

Mesozoic Terrestrial Ecosystems and Biota

Mesozoic plants and dinosaur herbivory

Phylogeny of the Procyonidae (Mammalia: Carnivora): molecules, morphology and the Great American Interchange.

The Procyonidae (Mammalia: Carnivora) have played a central role in resolving the controversial systematics of the giant and red pandas, but phylogenetic relationships of species within the family itself have received much less attention. Cladistic analyses of morphological characters conducted during the last two decades have resulted in topologies that group ecologically and morphologically s...