Results 41 to 50 of about 9,376 (253)

The Cenozoic sedimentary environment and sedimentary filling evolution of Wan'an Basin in the western South China Sea

open access: yesPetroleum Research, 2019
As one of the basins with extremely abundant oil and gas resources in South China Sea, the Wan'an Basin has attracted great attention from domestic and international geologists and hydrocarbon explorers.
Yibo Wang   +4 more
doaj   +1 more source

Morphological variation in atlas and axis of Neotropical spiny rats (Rodentia, Echimyidae)

open access: yesThe Anatomical Record, EarlyView.
Abstract The unique morphologies of the first two cervical vertebrae, the atlas and axis, represent a significant innovation in mammalian evolution. These structures support the weight of the head and enable intricate movements of the head and neck.
Thomas Furtado da Silva Netto   +3 more
wiley   +1 more source

Late Miocene Warming in the Tropics Based on Planktonic Foraminiferal Assemblages

open access: yesGeosciences
The Late Miocene is known as a period of long-term Cenozoic global cooling and decreasing concentrations of atmospheric CO2. The conditions provide the opportunity to assess the Earth’s climate sensitivity in altering internal and external drivers in a ...
Marfasran Hendrizan   +8 more
doaj   +1 more source

The cranial, mandibular, and hyoid anatomy of softshell turtles (Trionychidae): A revised character list for phylogenetic analysis

open access: yesThe Anatomical Record, EarlyView.
Abstract Softshell turtles (Pan‐Trionychidae) are an early branching clade of hidden‐necked turtles (Cryptodira) with a rich fossil record extending back to the Early Cretaceous. The evolutionary history of softshell turtles is still unresolved because of their conservative morphology combined with high levels of polymorphism related to morphological ...
Léa C. Girard, Walter G. Joyce
wiley   +1 more source

The large-sized darter Anhinga pannonica (Aves, Anhingidae) from the late Miocene hominid Hammerschmiede locality in Southern Germany.

open access: yesPLoS ONE, 2020
We report fossils of the darter Anhinga pannonica Lambrecht, 1916 from two late Miocene (Tortonian, 11.62 and 11.44 Ma) avifaunas in Southern Germany. The material from the hominid locality Hammerschmiede near Pforzen represents the most comprehensive ...
Gerald Mayr   +2 more
doaj   +1 more source

MicroCT reinvestigation of the only articulated fossil anostomid fish reveals synonymy of Arhinolemur Ameghino, 1898 and Megaleporinus Ramirez et al., 2017

open access: yesThe Anatomical Record, EarlyView.
Abstract Arhinolemur scalabrinii† Ameghino, 1898 was originally described as a strepsirrhine primate (Mammalia) but has been recognized as an anostomid fish since 2012. It remains the only extinct anostomid species known from complete cranial material.
Karen M. Panzeri   +8 more
wiley   +1 more source

Thermal modeling and hydrocarbon generation of the Late Jurassic-Early Cretaceous Chia Gara Formation in Iraqi Kurdistan region, northern Zagros Fold Belt

open access: yesEgyptian Journal of Petroleum, 2018
The Late Jurassic-Early Cretaceous Chia Gara Formation is an important oil-source rock in Iraqi Kurdistan region. Chia Gara source rock is characterised by high organic matter and sulphur content with Type II_S kerogen.
Mohammed Hail Hakimi   +3 more
doaj   +1 more source

Grassland fire ecology has roots in the late Miocene [PDF]

open access: yesProceedings of the National Academy of Sciences, 2018
That fire facilitated the late Miocene C 4 grassland expansion is widely suspected but poorly documented. Fire potentially tied global climate to this profound biosphere transition by serving as a regional-to-local driver of vegetation change.
A. Tyler Karp   +2 more
openaire   +2 more sources

Oldest well‐preserved euprimate petrosal, from the early Eocene of India (Vastan Lignite Mine, Gujarat)

open access: yesThe Anatomical Record, EarlyView.
Abstract An exquisitely preserved, isolated partial petrosal with associated fragmentary stapes is described from the Vastan Lignite Mine (Gujarat, India), dated to the early Eocene (~54.5 Ma). Several anatomical traits (e.g., large petrosal plate; posterolateral entry of the internal carotid artery to the tympanic cavity; bony tubes surrounding the ...
Mary T. Silcox   +8 more
wiley   +1 more source

SHANXIHIPPUS DERMATORHINUS COMB. NOV. WITH COMPARISONS TO OLD WORLD HIPPARIONS WITH SPECIALIZED NASAL APPARATI

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2018
Skulls, mandibles and dentitions of a new, monospecific lineage of late Miocene Chinese hipparionine horse, Shanxihippus dermatorhinus nov comb.are reported.
RAYMOND L. BERNOR   +4 more
doaj   +1 more source

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