Results 11 to 20 of about 346 (108)

First evidence of Elasmosauridae (Reptilia: Sauropterygia) in an erratic boulder of Campanian age originating from southern Sweden or the adjacent Baltic Sea area [PDF]

, 2011
An isolated dorsal vertebra from a plesiosaur was found in a Pleistocene erratic boulder (geschiebe) near Wismar (Germany). The geschiebe is a carbonate cemented sandstone or a silica-rich arenitic limestone, containing clear angular quartz and well-rounded glauconitic grains.
Foth, Christian, Kalbe, Johannes, Kautz, René   +2 more
core   +3 more sources

CT-scan description of Alexandronectes zealandiensis (Elasmosauridae, Aristonectinae), with comments on the elasmosaurid internal cranial features

Journal of Vertebrate Paleontology, 2021
The holotype specimen of Alexandronectes zealandiensis is analyzed using digital reconstruction based on CT scans. Additional information regarding internal anatomy or obscured details are added. Additional features include: ectopterygoid rhombic in shape with posterior end pointed, a feature shared only with Aristonectes quiriquinensis; pterygoid ...
Jose P. O'Gorman, Rodrigo A. Otero, Norton Hiller, Robin F. O'Keefe, R. Paul Scofield, Ewan Fordyce   +5 more
openaire   +4 more sources

Osteology of a perinatal aristonectine (Plesiosauria; Elasmosauridae) [PDF]

Antarctic Science, 2016
AbstractPerinatal specimens give valuable information about the first stages of vertebrate ontogeny. Here, the morphology and palaeohistology of an aristonectine perinatal specimen from Seymour Island (Isla Marambio), López de Bertodano Formation are analysed.
O'gorman, Jose Patricio, Talevi, Marianella, Fernández, Marta Susana   +2 more
openaire   +2 more sources

Postcranial morphology of Aristonectes Cabrera (Plesiosauria, Elasmosauridae) from the Upper Cretaceous of Patagonia and Antartica

Cretaceous Research, 2013
Fil: Brandoni, Zulma Nelida. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo.
O'gorman, Jose Patricio, Brandoni, Zulma Nelida, Salgado, Leonardo   +2 more
openaire   +4 more sources

The oldest plesiosaur (Reptilia, Sauropterygia) from Antarctica [PDF]

Polar Research, 2011
Antarctic plesiosaurs are known from the Upper Cretaceous López de Bertodano and Snow Hill Island formations (Campanian to upper Maastrichtian), which crop out within the James Ross Basin region of the Antarctic Peninsula.
Alexander Wilhelm Armin Kellner, Tiago Rodrigues Simões, Douglas Riff, Orlando Grillo, Pedro Romano, Helder de Paula, Renato Ramos, Marcelo Carvalho, Juliana Sayão, Gustavo Oliveira, Taissa Rodrigues   +10 more
doaj   +1 more source

Aristonectes quiriquinensis, sp. nov., a new highly derived elasmosaurid from the upper Maastrichtian of central Chile [PDF]

, 2014
This paper describes a new species of elasmosaurid plesiosaur, Aristonectes quiriquinensis, sp. nov., based on a partial skeleton recovered from upper Maastrichtian beds of the Quiriquina Formation of central Chile.
O'gorman, Jose Patricio, O'Keefe, Frank Robin, Otero, Rodrigo A., Quinzio Sinn, Luis Arturo, Rubilar-Rogers, David, Salazar, Christian, Soto Acuña, Sergio, Stinnesbeck, Wolfgang, Suárez, Mario E.   +8 more
core   +4 more sources

Vegasaurus molyi, gen. et sp. nov. (Plesiosauria, Elasmosauridae), from the Cape Lamb Member (lower maastrichtian) of the Snow Hill Island Formation, Vega Island, Antarctica, and remarks on Wedellian Elasmosauridae

Journal of Vertebrate Paleontology, 2015
ABSTRACT—A new elasmosaurid, Vegasaurus molyi, gen. et sp. nov., from Vega Island, James Ross Archipelago, Antarctica, is described. The holotype and only specimen of this species (MLP 93-I-5-1) was collected from the lower Maastrichtian Cape Lamb Member of the Snow Hill Island Formation.
O'gorman, Jose Patricio, Salgado, Leonardo, Olivero, Eduardo Bernardo, Marenssi, Sergio Alfredo   +3 more
openaire   +2 more sources

On the cranial anatomy of the polycotylid plesiosaurs, including new material of Polycotylus latipinnis, Cope, from Alabama [PDF]

, 2004
The cranial anatomy of plesiosaurs in the family Polycotylidae (Reptilia: Sauropterygia) has received renewed attention recently because various skull characters are thought to indicate plesiosauroid, rather than pliosauroid, affinities for this family ...
O’Keefe, F. Robin
core   +2 more sources

Osteology of the cryptocleidoid plesiosaur Tatenectes laramiensis, with comments on the taxonomic status of the Cimoliasauridae [PDF]

, 2009
Recent field work in the Bighorn Basin, Wyoming has recovered significant new material of the plesiosaur Tatenectes laramiensis. The majority of cryptocleidoid plesiosaurs have been recovered from Middle and Upper Jurassic units (Oxford and Kimmeridge ...
Brenner R. L., Brown D. S., Brown D. S., Cabrera A., Chatterjee S., Cope E. D., Cruickshank A. R. I., Cruickshank A. R. I., de Blainville H. D., DeLair J. B., F. Robin O'Keefe, Gasparini Z., Gilmore C. W., Hallie P. Street, Imlay R. W., Kear B. P., Kvale E. P., Leidy J., Leidy J., Marsh O. C., Marsh O. C., Marsh O. C., Mehl M. G., O'Keefe F. R., O'Keefe F. R., O'Keefe F. R., O'Keefe F. R., O'Keefe F. R., O'Keefe F. R., Owen R., Persson P. O., Persson P. O., Persson P. O., Pipiringos G. N., Reeside J. B., Swofford D. L., Welles S. P., Welles S. P., Welles S. P.   +38 more
core   +3 more sources

The Slottsmøya marine reptile Lagerstätte: depositional environments, taphonomy and diagenesis [PDF]

, 2015
The Late Jurassic Slottsmøya Member Lagerstätte on Spitsbergen offers a unique opportunity to study the relationships between vertebrate fossil preservation, invertebrate occurrences and depositional environment.
Delsett, Lene L., Druckenmiller, Patrick S., Hammer, Oyvind, Hurum, Jorn H., Koevoets, Maayke J., Novis, Linn K., Roberts, Aubrey J.   +6 more
core   +2 more sources