A5003858078- Paleontology and Evolutionary Biology
- Ichthyology and Marine Biology
- Evolution and Paleontology Studies
- Amphibian and Reptile Biology
- Turtle Biology and Conservation
- Paleontology and Stratigraphy of Fossils
- Space Exploration and Technology
- Geological and Tectonic Studies in Latin America
- Bat Biology and Ecology Studies
- Fish biology, ecology, and behavior
- Orthoptera Research and Taxonomy
- Parasite Biology and Host Interactions
- Animal Behavior and Reproduction
University of Michigan
2020-2024
The holotypic materials of the sauropod 'Morosaurus' agilis—a partial skull, proatlases, and first three cervical vertebrae—have been a taxonomic phylogenetic mystery since their initial description by O. C. Marsh in 1889 redescription W. Gilmore 1907. Although most species Morosaurus were subsumed into Camarasaurus 1919, 'M.' agilis was left defunct genus without proper assignment. Similarities have noted between other Morrison Formation taxa, including Camarasaurus, Haplocanthosaurus,...
Abstract Recent phylogenetic analyses differ in their interpretations of the origin and interrelationships snakes, resulting polarized views snake ecology, habit acquisition features associated with wide-gaped feeding (macrostomy). Here, we report a new specimen Late Cretaceous nest predator Sanajeh indicus that helps to resolve macrostomy. The preserves an ossified upper temporal bar posteriorly expanded otooccipital region lacks free-ending supratemporal bone retains lizard-like...
Abstract Unlike most herbivores, sauropod dinosaurs evolved simple teeth that were replaced rapidly. Sauropod craniodental morphology is conserved relative to of many archosaur clades, but tooth breadth and replacement rate vary substantially. Two neosauropod Titanosauria Diplodocoidea, independently both narrow‐crowned high rates among a suite other convergent features. Brachiosaurids also somewhat narrower‐crowned teeth, the two brachiosaurids whose has been examined date have low rates....
The Paleogene record of pelicans (Pelecanidae) is represented at present by a single early Oligocene specimen from southeastern France. Here we describe new pelecanid the Priabonian portion Birket Qarun Formation within Wadi Al-Hitan World Heritage Site in Egypt. This specimen, nearly complete right tibiotarsus, first definitive recovered Eocene strata. tibiotarsus remarkably similar to those known Pelecanus species, but sufficiently different warrant designation as genus and species...
The northern-most occurrence of Sauropoda in South America was collected the 1940s from Early–Middle Jurassic-aged continental sediments on western flank Serranía del Perijá Colombia. Relocation site and re-preparation specimen, a well-preserved dorsal vertebra, provide important information about initial diversification sauropods at low latitudes. specimen possesses autapomorphies unique combination character states (e.g., divided centropostzygapophyseal lamina, strongly dorsally arched...
Rhynchocephalia, a once diverse clade of lizard-like reptiles, had nearly global distribution during much the Mesozoic. By Late Cretaceous rhynchocephalians underwent marked reduction in their diversity and biogeographic range, with sparse records only deeply nested taxa (e.g., Sphenodontinae) found Upper Cretaceous–Paleocene Patagonia Miocene–Recent New Zealand. Here we describe partial dentary teeth rhynchocephalian from Naskal locality, an intertrappean deposit within Deccan Traps...
Journal Article Special volume 'Cretaceous tetrapods from South America' Get access Hussam Zaher, Zaher Museu de Zoologia da Universidade São Paulo, Avenida Nazaré 481, Ipiranga, CEP 04263-000, SP, Brazil Corresponding author. Brazil. E-mail: [email protected] https://orcid.org/0000-0002-6994-489X Search for other works by this author on: Oxford Academic Google Scholar Diego Pol, Pol CONICET, Museo Argentino Ciencias Naturales, Av. Angel Gallardo 470, Buenos Aires CP 1405, Argentina Hans C E...