Search Results - "Smith, Roger M H"

Mercury evidence from southern Pangea terrestrial sections for end-Permian global volcanic effects by Shen, Jun, Chen, Jiubin, Yu, Jianxin, Algeo, Thomas J., Smith, Roger M. H., Botha, Jennifer, Frank, Tracy D., Fielding, Christopher R., Ward, Peter D., Mather, Tamsin A.

“…The latest Permian mass extinction (LPME) was triggered by magmatism of the Siberian Traps Large Igneous Province (STLIP), which left an extensive record of…”
Get full text

Earliest evidence of herd-living and age segregation amongst dinosaurs by Pol, Diego, Mancuso, Adriana C., Smith, Roger M. H., Marsicano, Claudia A., Ramezani, Jahandar, Cerda, Ignacio A., Otero, Alejandro, Fernandez, Vincent

“…Sauropodomorph dinosaurs dominated the herbivorous niches during the first 40 million years of dinosaur history (Late Triassic–Early Jurassic), yet…”
Get full text

Ecologically distinct dinosaurian sister group shows early diversification of Ornithodira by Angielczyk, Kenneth D, Tsuji, Linda A, Nesbitt, Sterling J, Sidor, Christian A, Smith, Roger M. H, Irmis, Randall B

“…The early evolutionary history of Ornithodira (avian-line archosaurs) has hitherto been documented by incomplete (Lagerpeton) or unusually specialized forms…”
Get full text

The earliest segmental sternum in a Permian synapsid and its implications for the evolution of mammalian locomotion and ventilation by Bendel, Eva-Maria, Kammerer, Christian F., Luo, Zhe-Xi, Smith, Roger M. H., Fröbisch, Jörg

“…The sternum is a stabilizing element in the axial skeleton of most tetrapods, closely linked with the function of the pectoral girdle of the appendicular…”
Get full text

The postcranial anatomy of Gorgonops torvus (Synapsida, Gorgonopsia) from the late Permian of South Africa by Bendel, Eva-Maria, Kammerer, Christian F, Smith, Roger M H, Fröbisch, Jörg

“…Gorgonopsians are among the most recognizable groups of synapsids from the Permian period and have an extensive but mostly cranial fossil record. By contrast,…”
Get full text

A temnospondyl trackway from the early Mesozoic of western Gondwana and its implications for basal tetrapod locomotion by Marsicano, Claudia A, Wilson, Jeffrey A, Smith, Roger M H

“…Temnospondyls are one of the earliest radiations of limbed vertebrates. Skeletal remains of more than 190 genera have been identified from late Paleozoic and…”
Get full text

The earliest bird-line archosaurs and the assembly of the dinosaur body plan by Nesbitt, Sterling J., Butler, Richard J., Ezcurra, Martín D., Barrett, Paul M., Stocker, Michelle R., Angielczyk, Kenneth D., Smith, Roger M. H., Sidor, Christian A., Niedźwiedzki, Grzegorz, Sennikov, Andrey G., Charig, Alan J.

“…The archosaur species Teleocrater rhadinus , part of the new clade Aphanosauria, is an example of the earliest divergence of the avian stem lineage…”
Get full text

Dynamic locomotor capabilities revealed by early dinosaur trackmakers from southern Africa by Wilson, Jeffrey A, Marsicano, Claudia A, Smith, Roger M H

“…A new investigation of the sedimentology and ichnology of the Early Jurassic Moyeni tracksite in Lesotho, southern Africa has yielded new insights into the…”
Get full text

Evidence from South Africa for a protracted end-Permian extinction on land by Viglietti, Pia A., Benson, Roger B. J., Smith, Roger M. H., Botha, Jennifer, Kammerer, Christian F., Skosan, Zaituna, Butler, Elize, Crean, Annelise, Eloff, Bobby, Kaal, Sheena, Mohoi, Joël, Molehe, William, Mtalana, Nolusindiso, Mtungata, Sibusiso, Ntheri, Nthaopa, Ntsala, Thabang, Nyaphuli, John, October, Paul, Skinner, Georgina, Strong, Mike, Stummer, Hedi, Wolvaardt, Frederik P., Angielczyk, Kenneth D.

“…Earth’s largest biotic crisis occurred during the Permo–Triassic Transition (PTT). On land, this event witnessed a turnover from synapsid- to…”
Get full text

Provincialization of terrestrial faunas following the end-Permian mass extinction by Sidor, Christian A., Vilhena, Daril A., Angielczyk, Kenneth D., Huttenlocker, Adam K., Nesbitt, Sterling J., Peecook, Brandon R., Steyer, J. Sébastien, Smith, Roger M. H., Tsuji, Linda A.

“…In addition to their devastating effects on global biodiversity, mass extinctions have had a long-term influence on the history of life by eliminating dominant…”
Get full text

Updated Geology and Vertebrate Paleontology of the Triassic Ntawere Formation of Northeastern Zambia, with Special Emphasis on the Archosauromorphs by Peecook, Brandon R, Steyer, J. Sébastien, Tabor, Neil J, Smith, Roger M. H

“…The two vertebrate fossil assemblages from the ?Middle Triassic Ntawere Formation have been known since the 1960s, but little new work has been done since the…”
Get full text

Permian tetrapods from the Sahara show climate-controlled endemism in Pangaea by Sidor, Christian A, O'Keefe, F. Robin, Damiani, Ross, Steyer, J. Sébastien, Smith, Roger M. H, Larsson, Hans C. E, Sereno, Paul C, Ide, Oumarou, Maga, Abdoulaye

“…New fossils from the Upper Permian Moradi Formation of northern Niger provide an insight into the faunas that inhabited low-latitude, xeric environments near…”
Get full text

The craniomandibular anatomy of the early archosauriform Euparkeria capensis and the dawn of the archosaur skull by Sookias, Roland B., Dilkes, David, Sobral, Gabriela, Smith, Roger M. H., Wolvaardt, Frederik P., Arcucci, Andrea B., Bhullar, Bhart-Anjan S., Werneburg, Ingmar

“…Archosauria (birds, crocodilians and their extinct relatives) form a major part of terrestrial ecosystems today, with over 10 000 living species, and came to…”
Get full text

Captorhinid reptiles from the lower Permian Pedra de Fogo Formation, Piauí, Brazil: the earliest herbivorous tetrapods in Gondwana by Cisneros, Juan C, Angielczyk, Kenneth, Kammerer, Christian F, Smith, Roger M H, Fröbisch, Jörg, Marsicano, Claudia A, Richter, Martha

“…The Pedra de Fogo Formation in the Parnaíba Basin of northeastern Brazil hosts a recently discovered lacustrine fauna and provides the only known record of the…”
Get full text

New whaitsioids (Therapsida: Therocephalia) from the Teekloof Formation of South Africa and therocephalian diversity during the end-Guadalupian extinction by Huttenlocker, Adam K, Smith, Roger M H

“…Two new species of therocephalian therapsids are described from the upper Permian Teekloof Formation of the Karoo Basin, South Africa. They include two…”
Get full text

A Middle Triassic Cynodont Fauna from Namibia and Its Implications for the Biogeography of Gondwana by Abdala, Fernando, Smith, Roger M. H

“…The upper Omingonde Formation of Namibia contains a diverse vertebrate fauna represented by amphibians, dicynodonts, archosaurs, therocephalians, and…”
Get full text

Contrasting geochemical signatures on land from the Middle and Late Permian extinction events by Sheldon, Nathan D., Chakrabarti, Ramananda, Retallack, Gregory J., Smith, Roger M. H.

“…The end of the Palaeozoic is marked by two mass‐extinction events during the Middle Permian (Capitanian) and the Late Permian (Changhsingian). Given…”
Get full text

A New Specimen of Promoschorhynchus (Therapsida: Therocephalia: Akidnognathidae) from the Lower Triassic of South Africa and its Implications for Theriodont Survivorship Across the Permo-Triassic Boundary by Huttenlocker, Adam K, Sidor, Christian A, Smith, Roger M. H

“…The anatomy of a new subadult specimen of eutherocephalian therapsid, attributed to Promoschorhynchus cf. P. platyrhinus, is described from lowermost Triassic…”
Get full text

New Middle Triassic Tetrapods from the Upper Fremouw Formation of Antarctica and Their Depositional Setting by Sidor, Christian A, Smith, Roger M. H, Huttenlocker, Adam K, Peecook, Brandon R

“…Renewed field work in the Beardmore Glacier region of Antarctica has led to a new collection of tetrapod fossils from the upper member of the Fremouw Formation…”
Get full text

An early geikiid dicynodont from the Tropidostoma Assemblage Zone (late Permian) of South Africa by Kammerer, Christian F, Smith, Roger M H

“…Based on specimens previously identified as , a new taxon of dicynodont ( gen. et sp. nov.) from the Karoo Basin of South Africa is described. is a…”
Get full text