▪ Abstract A review of crocodylian phylogeny reveals a more complex history than might
have been anticipated from a direct reading of the fossil record without consideration of …

Alligatoroidea, a stem-based group including living alligators and caimans and all taxa
closer to them than to Crocodylus or Gavialis, includes seven living species and a large …

The fossil crocodylomorph fauna of the Cenozoic of South America is very rich and diverse.
Historically, few publications have been dedicated to providing an overall review of this …

New sedimentological and palynological data from the Tertiary sediments in the Upper
Amazon River area suggest that these sediments are fluvio-lacustrine deposits of Middle to …

American alligators Alligator mississippiensis undergo major transformations in morphology
and ecology during development. These include several thousand-fold changes in body …

Recent phylogenetic analyses of fossil and living crocodylians allow us to compare the
taxonomic, geographic, and temporal distributions of morphological features, such as snout …

Cranial fragments associated with the holotype of Necrosuchus ionensis reveal a dorsally
shifted foramen aereum on the quadrate and a long, slender descending process of the …

Abstract The Middle Miocene has been identified as a time of great diversification in modern
lineages now distributed in tropical South America, and when basic archetypal traits defining …

We describe a new crocodile, Crocodylus thorbjarnarsoni, sp. nov., on the basis of skulls
and jaws from Pliocene and Pleistocene deposits in the Lake Turkana Basin of Kenya. The …

Purussaurus brasiliensis thrived in the northwestern portion of South America during the
Late Miocene. Although substantial material has been recovered since its early discovery …