Results 91 to 100 of about 593 (201)

COMMENTS ON TRIASSIC PTEROSAURS WITH A COMMENTARY ON THE "ONTOGENETIC STAGES" OF KELLNER (2015) AND THE VALIDITY OF BERGAMODACTYLUS WILDI

Rivista Italiana di Paleontologia e Stratigrafia, 2018
Six stages (OS1-6) were identified by Kellner (2015) to establish the ontogeny of a given pterosaur fossil. These were used to support the erection of several new Triassic taxa including Bergamodactylus wildi, which is based on a single specimen (MPUM ...
FABIO M. DALLA VECCHIA
doaj   +1 more source

New azhdarchoid pterosaur (Pterosauria, Pterodactyloidea) with an unusual lower jaw from the Portezuelo Formation (Upper Cretaceous), Neuquén Group, Patagonia, Argentina

Anais da Academia Brasileira de Ciências, 2017
A new azhdarchoid pterosaur from the Upper Cretaceous of Patagonia is described. The material consists of an incomplete edentulous lower jaw that was collected from the upper portion of the Portezuelo Formation (Turonian-Early Coniacian) at the ...
ALEXANDER W.A. KELLNER, JORGE O. CALVO
doaj   +1 more source

A new toothless pterosaur (Pterodactyloidea) from Southern Brazil with insights into the paleoecology of a Cretaceous desert

Anais da Academia Brasileira de Ciências
Abstract: The first pterosaur bone bed from Brazil was reported in 2014 at the outskirts of the town Cruzeiro do Oeste, Paraná State, in the Southern region of the country. Here named 'cemitério dos pterossauros' site, these outcrops were referred to the
ALEXANDER W.A. KELLNER, LUIZ C. WEINSCHÜTZ, BORJA HOLGADO, RENAN A.M. BANTIM, JULIANA M. SAYÃO   +4 more
doaj   +1 more source

Extending the Geographic Range of Pterosaurs in the Araripe Basin: First Record from the Romualdo Formation (Araripe Basin) in Piauí, Brazil [PDF]

Anais da Academia Brasileira de Ciências
The Araripe Basin in northeastern Brazil is a key site for Cretaceous pterosaur fossils from Gondwanan deposits. Most discoveries are concentrated in its northern portion, particularly in Ceará state, within the Crato and Romualdo formations. In contrast,
RENAN A.M. BANTIM, ESAÚ V. DE ARAÚJO, ARTUR F.S. ARAÚJO, FLAVIANA J. DE LIMA, JULIANA M. SAYÃO, PAULO V. DE OLIVEIRA   +5 more
doaj   +1 more source

Sobre um novo espécime de Tupandactylus Imperator (Archosauria, Pterosauria), proveniente da formação Crato (Eocretáceo) da Bacia do Araripe, Ceará, nordeste do Brasil [PDF]

, 2011
No ano de 2009, em uma mineradora de calcário laminado próxima à cidade de Nova Olinda (Ceará, nordeste do Brasil), um crânio parcial de pterossauro foi encontrado.
Pinheiro, Felipe Lima, Felipe Lima Pinheiro   +1 more
core  

The Evolution of Pneumatic Foramina in Pterosaur Vertebrae

Anais da Academia Brasileira de Ciências, 2019
: Pterosaurs possess skeletal pneumatization, which can be assessed externally through the observation of pneumatic foramina. These foramina vary in position, shape, and number among taxa.
RICHARD BUCHMANN, TAISSA RODRIGUES
doaj   +1 more source

Seazzadactylus venieri gen. et sp. nov., a new pterosaur (Diapsida: Pterosauria) from the Upper Triassic (Norian) of northeastern Italy

, 2021
A new non-monofenestratan pterosaur with multicusped dentition, Seazzadactylus venieri, is described from the Upper Triassic (middle-upper Norian) of the Carnian Prealps (northeastern Italy). The holotype of S. venieri preserves a complete mandibular and
Dalla Vecchia, Fabio
core  

Eggshell and Histology Provide Insight on the Life History of a Pterosaur with Two Functional Ovaries

Anais da Academia Brasileira de Ciências, 2015
The counterpart of a previously described non-pterodactyloid pterosaur with an egg revealed the presence of a second egg inside the body cavity of this gravid female.
XIAOLIN WANG, ALEXANDER W. A. KELLNER, XIN CHENG, SHUNXING JIANG, QIANG WANG, JULIANA M. SAYÃO, TAISSA RODRIGUES, FABIANA R. COSTA, NING LI, XI MENG, ZHONGHE ZHOU   +10 more
doaj   +1 more source

Phylogenetic analysis.

, 2016
Modified version (see text) of the matrix by [7], with the inclusion of Aymberedactylus cearensis gen. et sp. nov. Nodes: 1, Pterosauria; 2, Pterodactyloidea; 3, Azhdarchoidea; 4, Tapejarinae.
Maria Eduarda de Castro Leal (3130908), Rodrigo Vargas Pêgas (3130911), Alexander Wilhelm Armin Kellner (3130914)   +2 more
core   +1 more source

Biomechanical and physiological influences on the osteohistological deposition of Anhangueria (Pterosauria, Pterodactyloidea)

REVISTA BRASILEIRA DE PALEONTOLOGIA, 2015
The study of bone microstructure preserved in fossils provides substantial information about physiology, growth gradients and strategies, and some ecological considerations. Paleohistology is a useful tool for understanding the biological mechanisms of extinct animals. Presented here is the microstructure characterization of two Anhangueria pterosaurs.
Lucia Helena de Souza Eleutério, Renan Alfredo Machado Bantim, Flaviana Jorge de Lima, Rafael César Lima Pedroso de Andrade, Antônio Álamo Feitosa Saraiva, Alexander Wilhelm Armin Kellner, Juliana Manso Sayão   +6 more
openaire   +1 more source