Results 81 to 90 of about 346 (108)

Reptiles extintos : volumen en homenaje a Zulma Gasparini [PDF]

open access: yes, 2015
Fernández, Marta Susana   +1 more
core  

Los elasmosáuridos más antiguos hasta ahora conocidos: primer registro en el Oxfordiano de Gondwana [PDF]

open access: yes, 2015
Alarcón, Jhonatan   +4 more
core   +1 more source

Reappraisal of Tuarangisaurus? cabazai (Elasmosauridae, Plesiosauria) from the Upper Maastrichtian of northern Patagonia, Argentina

open access: yesCretaceous Research, 2014
Abstract The holotype of Tuarangisaurus? cabazai Gasparini, Salgado and Casadio, 2003 (Elasmosauridae, Plesiosauria) from the Upper Maastrichtian Jaguel Formation (northern Patagonia, Argentina) is redescribed, its taxonomic status is reconsidered, and its phylogenetic relationships analysed.
José P O'Gorman   +2 more
exaly   +3 more sources

Reappraisal of Fresnosaurus drescheri (Plesiosauria; Elasmosauridae) from the Maastrichtian Moreno Formation, California, USA

open access: yesCretaceous Research, 2016
Abstract The elasmosaurid Fresnosaurus drescheri, Welles from the contact between the Tierra Loma/Marca members of the Moreno Formation (Maastrichtian), California, USA is reviewed. Most of the features included in Welles's original diagnosis are considered related only to the juvenile ontogenetic stage of the holotype and only specimen.
José P O'Gorman
exaly   +3 more sources
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Neuroanatomy of the vertebral column of Vegasaurus molyi (Elasmosauridae) with comments on the cervico-dorsal limit in plesiosaurs

Cretaceous Research, 2017
Abstract The evolution of the axial skeleton of vertebrates, particularly regionalization and the changes in the limits of each region is yet to be completely understood. The features of this process are more difficult to follow in groups with strong changes in the number of vertebrae as is the case of plesiosaurs.
José P O'Gorman, Marta S Fernández
exaly   +3 more sources

Wunyelfia maulensis gen. et sp. nov., a new basal aristonectine (Plesiosauria, Elasmosauridae) from the Upper Cretaceous of central Chile

Cretaceous Research, 2021
Abstract We describe a near adult, partial postcranial skeleton of an elasmosaurid plesiosaur recovered from upper Maastrichtian beds of central Chile. The specimen includes the atlas-axis, five successive anterior-most cervical vertebrae, several middle cervical centra, cervical neural spines, most of the trunk centra, rib and gastralia fragments ...
Rodrigo A Otero, Sérgio Soto-Acuña
exaly   +2 more sources

Redescription of Tuarangisaurus keyesi (Sauropterygia; Elasmosauridae), a key species from the uppermost Cretaceous of the Weddellian Province: Internal skull anatomy and phylogenetic position

open access: yesCretaceous Research, 2017
Abstract The systematics of elasmosaurids are not well resolved partially because of the scarcity of well-preserved skull material. Among Weddellian elasmosaurids, one exception to this is the holotype of Tuarangisaurus keyesi from upper Campanian–lower Maastrichtian levels of the Maungataniwha Sandstone Member of the Tahora Formation, Mangahouanga ...
José P O'Gorman   +2 more
exaly   +3 more sources

A juvenile Tuarangisaurus keyesi Wiffen and Moisley 1986 (Plesiosauria, Elasmosauridae) from the Upper Cretaceous of New Zealand, with remarks on its skull ontogeny

open access: yesCretaceous Research, 2018
Abstract This paper presents the detailed description of a remarkable skull and partial postcranial skeleton of a very juvenile elasmosaurid referred to Tuarangisaurus keyesi (CD 427), from the upper Campanian-lower Maastrichtian levels of the Tahora Formation, New Zealand.
Rodrigo A Otero   +2 more
exaly   +4 more sources

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