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Osteology of Viavenator exxoni (Abelisauridae; Furileusauria) from the Bajo de la Carpa Formation, NW Patagonia, Argentina
(Academic Press Ltd - Elsevier Science Ltd, 2018-03)
The complete osteology of the abelisaurid Viavenator exxoni, from the Bajo de la Carpa Formation (Santonian, Upper Cretaceous) is described. Viavenator is characterized by a series of autapomorphies, including: transversely ...
Shape variation in presacral vertebrae of saltasaurine titanosaurs (Dinosauria, Sauropoda)
(Taylor & Francis, 2014-11)
Titanosaurs were small- to giant-sized sauropods, highly derived and highly pneumatic. Using morphometric analyses, we studied differences in shape of the presacral vertebral centra in some of these sauropods, especially ...
A New Species of Parmaturus (Chondrichthyes: Carcharhiniformes: Scyliorhinidae) from Brazil, Southwestern Atlantic
(Amer Soc Ichthyologists & Herpetologists, 2019-06-01)
A new Southwestern Atlantic species of Parmaturus, P. angelae, new species, is described from two specimens captured off Brazil. It is distinguished from congeners by the following characters: origin of the first dorsal ...
New Species of the Thorny Catfish Genus Leptodoras (Siluriformes: Doradidae) from Rio Fresco, Xingu Basin, Brazil
(AMER SOC ICHTHYOLOGISTS HERPETOLOGISTS, 2010)
A new species of the thorny catfish genus Leptodoras (family Doradidae) is described. The new species shares three characters with its congeners, the modified oral hood with distinct upper labial extensions, the first gill ...
A new abelisauroid (Dinosauria: Theropoda) from the Huincul Formation (lower Upper Cretaceous, Neuquén Basin) of Patagonia, Argentina
(Academic Press Ltd - Elsevier Science Ltd, 2020-06)
A new ceratosaurian theropod dinosaur, Huinculsaurus montesi gen. et sp. nov., is described here. This taxon is based on the last three dorsal vertebrae and the first and second sacral vertebrae found in association at ...
From sperm plug formation to ovulation: Morphological and ultrastructural modifications in the seminal receptacle of the blue crab Callinectes danae
(2021-03-01)
In species of Callinectes a sperm plug is formed in the seminal receptacle (SR) during the sperm transfer, which hinders the insemination by other males. In this study, we evaluated the morphology, histochemistry, and ...
Pharyngeal airway space and frontal and sphenoid sinus changes after maxillomandibular advancement with counterclockwise rotation for class II anterior open bite malocclusions
(British Inst RadiologyLondonInglaterra, 2012)
Expression and splice variant analysis of the zebrafish tcf4 transcription factor
(2002)
Wnt signalling has been implicated in antero-posterior patterning of the vertebrate embryonic body axis and in a number of other developmental processes. One of the downstream effectors of Wnt signalling is the β-catenin ...
New remains of Eosclerocalyptus tapinocephalus (Cabrera) (Mammalia, Xenarthra, Glyptodontidae): descrption and implications for its taxonomic status
(Università degli Studi di Milano, 2007-12)
Eosclerocalyptus tapinocephalus (Cabrera) from the Huayquerian (Late Miocene) of the Pampean region, was known previously only from the type material. The recent finding of a well preserved specimen, mainly the caudal tube ...