Advanced search    

Search: authors:"Hussam Zaher"

5 papers found.
Use AND, OR, NOT, +word, -word, "long phrase", (parentheses) to fine-tune your search.

Large-scale molecular phylogeny, morphology, divergence-time estimation, and the fossil record of advanced caenophidian snakes (Squamata: Serpentes)

). Funding for this study was provided by FAPESP (2002/13602-4, 2011/50206-9 and 2016/50127-5). Conceptualization: Hussam Zaher, Robert W. Murphy, Felipe G. Grazziotin. Data curation: Hussam Zaher, Roberta ... Graboski, Kristin Mahlow, Felipe G. Grazziotin. Formal analysis: Hussam Zaher, Roberta Graboski, Mark Wilkinson, Felipe G. Grazziotin. Funding acquisition: Hussam Zaher. Investigation: Hussam Zaher, Mark

A New Notosuchian from the Late Cretaceous of Brazil and the Phylogeny of Advanced Notosuchians

A new notosuchian crocodyliform from the Late Cretaceous Bauru Group found in the southeastern State of São Paulo (Brazil) is described here. The new taxon, Caipirasuchus stenognathus, is referred as a new species of the recently erected genus Caipirasuchus within the clade Sphagesauridae based on a phylogenetic analysis of basal mesoeucrocodylians. Caipirasuchus stenognathus is...

A New Snake Skull from the Paleocene of Bolivia Sheds Light on the Evolution of Macrostomatans

Macrostomatan snakes, one of the most diverse extant clades of squamates, display an impressive arsenal of cranial features to consume a vast array of preys. In the absence of indisputable fossil representatives of this clade with well-preserved skulls, the mode and timing of these extraordinary morphological novelties remain obscure. Here, we report the discovery of Kataria...

Consuming viscous prey: a novel protein-secreting delivery system in neotropical snail-eating snakes

Background Efficient venom delivery systems are known to occur only in varanoid lizards and advanced colubroidean snakes among squamate reptiles. Although components of these venomous systems might have been present in a common ancestor, the two lineages independently evolved strikingly different venom gland systems. In snakes, venom is produced exclusively by serous glands in...

A Complete Skull of an Early Cretaceous Sauropod and the Evolution of Advanced Titanosaurians

Advanced titanosaurian sauropods, such as nemegtosaurids and saltasaurids, were diverse and one of the most important groups of herbivores in the terrestrial biotas of the Late Cretaceous. However, little is known about their rise and diversification prior to the Late Cretaceous. Furthermore, the evolution of their highly-modified skull anatomy has been largely hindered by the...