Results 91 to 100 of about 1,292 (190)

First record of non-mammalian cynodonts (Therapsida) in the Sanga do Cabral Formation (Early Triassic) of southern Brazil [PDF]

open access: yes, 2002
New material from the Sanga do Cabral Formation in southern Brazil is described, including one distal and three proximal portions of femora, and a distal portion of a humerus.
Abdala, Fernando   +2 more
core  

On the development of the chondrocranium and the histological anatomy of the head in perinatal stages of marsupial mammals [PDF]

open access: yes, 2017
An overview of the literature on the chondrocranium of marsupial mammals reveals a relative conservatism in shape and structures. We document the histological cranial anatomy of individuals representing Monodelphis domestica, Dromiciops gliroides ...
Forasiepi, Analia Marta   +1 more
core   +4 more sources

Youngest dinocephalian fossils extend the Tapinocephalus Zone, Karoo Basin, South Africa

open access: yesSouth African Journal of Science, 2015
The dinocephalians (Synapsida, Therapsida) were one of the dominant tetrapod groups of the Middle Permian (Guadalupian Epoch, ~270–260 million years ago) and are most abundantly recorded in the Tapinocephalus Assemblage Zone (AZ) of the Main Karoo Basin,
Michael O. Day   +5 more
doaj   +1 more source

The first biarmosuchian from the upper Madumabisa Mudstone Formation (Luangwa Basin) of Zambia [PDF]

open access: yes, 2015
This contribution reports the first occurrence of a biarmosuchian therapsid from the upper Madumabisa Mudstone Formation of the Luangwa Basin of northeastern Zambia.
Sidor, Christian A
core  

FUNCTIONAL AND EVOLUTIONARY ASPECTS OF THE POSTCRANIAL ANATOMY OF DICYNODONTS (SYNAPSIDA, THERAPSIDA) [PDF]

open access: yesPalaeontology, 2006
Abstract:  Restoration of the major skeletal muscles and functional morphological analysis of the postcranium were carried out on two Triassic dicynodont genera, Wadiasaurus and Lystrosaurus. A phylogenetic analysis of 12 selected Permian and Triassic dicynodont taxa was conducted and the postcranial character states were then mapped onto the most ...
openaire   +1 more source

Dinosaur lactation ? [PDF]

open access: yes, 2013
Lactation is a process associated with mammals, yet a number of birds feed their newly hatched young on secretions analogous to the milk of mammals. These secretions are produced from various sections (crop organ, oesophageal lining and proventriculus ...
Else, Paul L.
core   +2 more sources

Eunotosaurus africanus and the Gondwanan ancestry of anapsid reptiles [PDF]

open access: yes, 2000
Phylogenetic analyses confirm that the turtle-like Late Permian reptile Eunotosaurus africanus is a parareptile (sensu deBraga & Reisz 1996) and identify it as the sister taxon of Procolophonomorpha. The tree topology for anapsid reptiles suggests that a
Modesto, Sean Patrick
core  

Breeding young as a survival strategy during earth’s greatest mass extinction [PDF]

open access: yes, 2016
Studies of the effects of mass extinctions on ancient ecosystems have focused on changes in taxic diversity, morphological disparity, abundance, behaviour and resource availability as key determinants of group survival.
A Arche   +32 more
core   +1 more source

Two New Tritylodontids (Synapsida, Cynodontia, Mammaliamorpha) from the Upper Jurassic, Southwestern Mongolia

open access: yesAmerican Museum Novitates, 2017
ABSTRACT Two new genera and species of Tritylodontidae, Shartegodon altai and Nuurtherium baruunensis, are described and compared with other known tritylodontids. The new taxa are represented by two partial skulls and, in the case of Nuurtherium, postcranial elements. They were collected from the lower part of the Ulan Malgait Sequence (Upper Jurassic)
PaúL M. Velazco   +2 more
openaire   +2 more sources

On Bauria cynops Broom [PDF]

open access: yes, 1963
Main articleDescriptions of this genus and species, the type of an infraorder, have thus far been based on three individuals. The type in the South African Museum, Cape Town is a complete skull, but somewhat unsatisfactorily preserved and cleaned.
Brink, A. S.
core  

Home - About - Disclaimer - Privacy