Results 41 to 50 of about 3,529 (187)

Endocranial anatomy of the earliest Cretaceous European neosuchian crocodyliform Pholidosaurus purbeckensis provides new evidence for the ecological evolution of Pholidosauridae

Journal of Anatomy, EarlyView.
We present new insights into the internal cranial anatomy of the neosuchian crocodyliform Pholidosaurus purbeckensis, based on CT‐scan data of material from the lowermost Cretaceous Purbeck Limestone Group, southern UK. From the study of the endocast, we obtained new information on the phylogeny and the ecological evolution of the Family ...
Leonardo Barbini, Paul M. J. Burke, Ilaria Caddeo, Marco Romano, Philip D. Mannion   +4 more
wiley   +1 more source

Early Paleocene siluroid catfish from Bolivia and its evolutionary and paleogeographic importance

Acta Palaeontologica Polonica
The fossil genus Yuskaichthys, previously known only from Eocene deposits of the Maíz Gordo site in Argentina, is here identified based on three isolated parieto-supraoccipital bones collected in the Tiupampa locality, Cochabamba-Potosí Basin, Bolivia ...
Eva Caron, Diogo Mayrinck, Ricardo Cespedes, Olga Otero   +3 more
doaj   +1 more source

Palynology and stratigraphy of the thick evaporate-bearing Shashi Formation in Jiangling Depression, Jianghan Basin of South China, and its paleoclimate change

China Geology, 2020
: In the greater inland Jianghan Basin of South China, three salt depressions are lacking accurate geological times, of which Jiangling Depression is the largest.
Chun-lian Wang, Cheng-lin Liu, Jiu-yi Wang, Xiao-can Yu, Kai Yan   +4 more
doaj   +1 more source

Impact ejecta at the Paleocene-Eocene boundary

Science, 2016
An impactful event Glassy silica spherules have been found in marine sediments from three sites across a wide area off the Atlantic coast of the United States, near the stratigraphic level of the Paleocene-Eocene boundary.
Schaller, Morgan, Fung, Megan, Wright, James, Katz, Miriam, Kent, Dennis V.   +4 more
openaire   +4 more sources

Virtual brain endocasts of the palaeanodont Metacheiromys marshi and the neurosensory evolution of early Pholidotamorpha

Journal of Anatomy, EarlyView.
We describe the endocranial anatomy of Metacheiromys marshi. Decrease in olfaction and eye movement control occurred through time in Pholidotamorpha and is likely linked to fossorial adaptations. The development of the orbital gyrus might be related to the evolution of myrmecophagy and the emergence of a protrusile tongue in early Pholidotamorpha ...
Eduard Cabasés Bru, Raquel Moya‐Costa, John R. Wible, Stephen L. Brusatte, Ornella C. Bertrand   +4 more
wiley   +1 more source

Results of magnetostratigraphic study of the Lower Syzran subformation (Paleocene) in the north of the Saratov Right Bank (Gremyachka and Kluchy-2 sections) [PDF]

Известия Саратовского университета. Новая серия: Серия Науки о Земле
The results of petromagnetic and paleomagnetic studies of two sections of the Lower Syzran subformation (Paleocene) – Gremyachka and Klyuchi-2, located in the north of the Saratov Right Bank and represented by weakly magnetic silicites, are ...
Shelepov, Dmirtiy Aleksandrovich
doaj   +1 more source

Resolving the relationships of Paleocene placental mammals.

Biological reviews of the Cambridge Philosophical Society, 2015
The 'Age of Mammals' began in the Paleocene epoch, the 10 million year interval immediately following the Cretaceous-Palaeogene mass extinction. The apparently rapid shift in mammalian ecomorphs from small, largely insectivorous forms to many small-to-large-bodied, diverse taxa has driven a hypothesis that the end-Cretaceous heralded an adaptive ...
Halliday, TJD, Upchurch, P, Goswami, A
openaire   +3 more sources

Computed tomography reveals the endocranial anatomy of Crocodylia: Implications for phylogenetic relationships and ecomorphological convergence across Crocodylomorpha

Journal of Anatomy, EarlyView.
The evaluation of the endocranial anatomy of 43 crocodylian species reveals several differences, including variation in the curvature of the encephalic endocast, the size of the endosseous labyrinth and paratympanic sinuses, and the presence of additional snout sinuses.
Paul M. J. Burke, Philip D. Mannion
wiley   +1 more source

The Unexpected Discovery of Paleocene? Coals in Outcrops Thought to Be Cambrian, Al Huqf, Oman

Journal of Petroleum Geology, EarlyView.
ABSTRACT Two brown organic deposits were encountered whilst investigating kaolinitic claystones thought to occur at the base of a Cambrian formation at outcrop. The age of these organic deposits is probably Paleocene from palynology. Organic petrography shows that they are subbituminous coals with some oil source potential.
Mohammed H. Al Kindi, Alan P. Heward, Lorraine B. Eglinton, Steve R. Packer, Darrin T. Stead   +4 more
wiley   +1 more source

Reservoir characteristics and hydrocarbon accumulation significance of metamorphic zones of intrusive rocks and surrounding rocks in second member of Paleocene Funing Formation in Qintong Sag, Subei Basin

Shiyou shiyan dizhi
Volcanic reservoirs play a crucial role in oil and gas exploration. The intrusive rocks in the Qintong Sag of the Subei Basin are widely distributed within active oil and gas deposits, making them a significant area for further exploration and reserve ...
Suhua ZANG
doaj   +1 more source