Results 121 to 130 of about 87,970 (275)

First occurrences of Trionychidae (Testudines, Cryptodira) from the Miocene of Poland: Detailed cranial anatomy and biogeographic implications

open access: yesJournal of Anatomy, EarlyView.
Fossil finds from three Middle Miocene sites in Poland reveal the northernmost known presence of trionychid turtles in Europe, tentatively identified as Trionyx cf. vindobonensis, suggesting a warmer climate that supported thermophilic species in Central Europe during this period. Abstract Modern trionychids (Testudines, Cryptodira) have a pan‐tropical
Yohan Pochat‐Cottilloux   +5 more
wiley   +1 more source

Geochemical and Seismic Constraints on the Role of Mud Diapirs in Petroleum Migration and Accumulation in the Recôncavo Basin, NE Brazil

open access: yesJournal of Petroleum Geology, EarlyView.
ABSTRACT In the Recôncavo Basin, Northeast of Brazil, mud diapirs have been reported for decades, but their role within the basin's petroleum system remains poorly constrained. Here, we combine 2D seismic interpretation, field observations, and organic geochemical analyses of rocks and oil seeps to investigate the relationship between diapirism and ...
Cora Mattos   +3 more
wiley   +1 more source

PLIOCENE AND PLEISTOCENE DEPOSITIONAL ENVIRONMENTS IN THE PESCULUSE AREA (SALENTO, ITALY)

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2020
An integrated sedlmentologic and palaeoecologic approach is used to define the evolving Pliocene, Early and Middle Pleistocene depositional environments in the Pesculuse area.
ASSUNTA D'ALESSANDRO, FRANCESCO MASSARI
doaj  

Integrative phylogenomics and morphology reveal the evolution and biogeography of Encephalartos (Zamiaceae)

open access: yesJournal of Systematics and Evolution, EarlyView.
We aimed to conduct phylogenetic analyses of Encephalartos, a cycad genus endemic to Africa, using 3545 single‐copy nuclear genes extracted from transcriptome data, covering 64/65 of the recognized species, along with inference of divergence times using two secondary calibration points.
Sadaf Habib   +8 more
wiley   +1 more source

NEW' DATA ON PLANKTONIC FORAMINIFERA BIOSTRATIGRAPHY FROM THE NEOGENE OF THE GARGANO PENINSULA (FOGGIA, SOUTHERN ITALY)

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2020
This paper concerns detailed analyses on planktonic foraminifera biostratigraphy of a section outcropping in the area of Poggio Imperiale, the western side of Gargano (FG) The sediments  overlying the mesozoic carbonate platform have been assigned to ...
VALLERI GIGLIOLA
doaj  

Variations in downslope activity and bottom current dynamics in a land‐detached submarine channel system since the Last Glacial Maximum

open access: yesSedimentology, EarlyView.
ABSTRACT The Gollum Channel System is a land‐detached large‐scale canyon‐channel system situated offshore southwest Ireland on the Northeast Atlantic margin. The system has been considered inactive with downslope gravity flows since the last glacial period, but geophysical data in some of its branches do suggest Holocene activity.
Lotte Verweirder   +8 more
wiley   +1 more source

Determining how atmospheric carbon dioxide concentrations have changed during the history of the Earth [PDF]

open access: yes, 2011
The reconstruction of ancient atmospheric carbon dioxide concentrations is essential to understanding the history of the Earth and life. It is also an important guide to identifying the sensitivity of the Earth system to this greenhouse gas and ...
Badger, Marcus P. S.   +2 more
core   +1 more source

Giant Porphyry Copper Deposits Caused by a Slab Jamming in the Mantle Transition Zone

open access: yesTerra Nova, EarlyView.
ABSTRACT Two giant porphyry copper deposits in the Southern Central Andes formed during the Miocene–Pliocene transition when a bend in the subducting Juan de Fernández hotspot chain jammed in the mantle transition zone, causing mega‐scale slab‐kinking. This geometry implies mechanical resistance that caused East–West compression and eventually a thrust‐
Nipaporn Nakrong   +5 more
wiley   +1 more source

The Role of Gene Flow in the Diversification of the Monkey Treefrog Complex Across the South American Dry Diagonal

open access: yesZoologica Scripta, EarlyView.
ABSTRACT Understanding Neotropical megadiversity remains challenging due to fundamental taxonomic issues, including identifying and describing cryptic species and their distribution, and the limited knowledge of key factors driving biological diversification. Such challenges are especially prominent in diverse clades with high levels of cryptic species,
Felipe Camurugi   +10 more
wiley   +1 more source

The Late Miocene Southern and Central Taranaki Inversion Phase (SCTIP) and related sequence stratigraphy and paleogeography [PDF]

open access: yes, 2008
We present a new sequence stratigraphic scheme for Taranaki Basin that identifies four 3rd order duration (3 - 4 m.y.) sequences of Middle Miocene to Pleistocene age.
Kamp, Peter J.J., Vonk, Adam J.
core  

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