Results 1 to 10 of about 1,947,082 (272)

The rise of macropredatory pliosaurids near the Early-Middle Jurassic transition [PDF]

open access: yesScientific Reports, 2023
The emergence of gigantic pliosaurid plesiosaurs reshaped the trophic structure of Mesozoic marine ecosystems, and established an  ~ 80 million-year (Ma) dynasty of macropredatory marine reptiles.
Sven Sachs   +3 more
doaj   +2 more sources

New macronarian from the Middle Jurassic of Chongqing, China: phylogenetic and biogeographic implications for neosauropod dinosaur evolution [PDF]

open access: yesRoyal Society Open Science, 2022
Macronaria is a clade of gigantic body-sized sauropod dinosaurs widely distributed from the Late Jurassic to the Late Cretaceous globally. However, its origin, early diversification, and dispersal are still controversial.
Hui Dai   +11 more
doaj   +2 more sources

Refining the marine reptile turnover at the Early–Middle Jurassic transition [PDF]

open access: yesPeerJ, 2021
Even though a handful of long-lived reptilian clades dominated Mesozoic marine ecosystems, several biotic turnovers drastically changed the taxonomic composition of these communities.
Valentin Fischer, Robert Weis, Ben Thuy
doaj   +3 more sources

Systematic composition of the middle Jurassic flora and its stratigraphic distribution (Ustyurt region, Uzbekistan) [PDF]

open access: yesE3S Web of Conferences, 2023
The article presents the systematic composition and stratigraphic distribution of the Middle Jurassic flora of Ustyurt (Uzbekistan). In the Middle Jurassic sediments, three plant complexes of different ages are distinguished, corre-sponding to aalen ...
Jalilov Gafur   +5 more
doaj   +1 more source

Temporal patterns in disparity and diversity of the Jurassic ammonoids of southern Germany [PDF]

open access: yesFossil Record, 2011
A morphometric analysis of the characteristic whorl cross-sections of 1,200 Jurassic ammonoid species from southern Germany enabled us to characterise their morphospace.
M. S. Simon, D. Korn, S. Koenemann
doaj   +5 more sources

Early and middle Jurassic sequence stratigraphic division of M coalfield in Xinjiang [PDF]

open access: yesE3S Web of Conferences, 2022
The coal accumulation in the M coalfield occurred in the Early-Middle Jurassic. There are three main coal-bearing strata in the M coalfield, the Early Jurassic Talicike Formation, the Yangxia Formation and the Middle Jurassic Kizilenur Formation.
Yao Qiuhui, Cui Kai
doaj   +1 more source

Tectonic evolution and its control on oil–gas accumulation in southern East China Sea since the Jurassic

open access: yesFrontiers in Earth Science, 2023
Based on the results from the previous research on Mesozoic igneous rocks, as well as tectonic environments in the northern South China Sea and southern East China Sea (NSCS-SECS), geophysical parameters, strata, and characteristics of seismic facies in ...
Mingjian Wang   +6 more
doaj   +1 more source

Jurassic provenances and their transition mechanism of the Delingha Sag in the eastern segment of northern margin of the Qaidam Basin, North Tibet

open access: yesGeosystems and Geoenvironment, 2022
The Delingha Sag that witnessed the Indosinian, Yanshanian and Himalayan orogenies since the Mesozoic, is a potential petroliferous Meso-Cenozoic sag located in the eastern segment of the northern margin of the Qaidam Basin in North Tibet.
Huaiwei Feng   +5 more
doaj   +1 more source

A new basal sauropod dinosaur from the middle Jurassic of Niger and the early evolution of sauropoda. [PDF]

open access: yesPLoS ONE, 2009
The early evolution of sauropod dinosaurs is poorly understood because of a highly incomplete fossil record. New discoveries of Early and Middle Jurassic sauropods have a great potential to lead to a better understanding of early sauropod evolution and ...
Kristian Remes   +9 more
doaj   +1 more source

FIRST THEROPOD RECORD FROM THE MARINE BATHONIAN OF JAISALMER BASIN, TETHYAN COAST OF GONDWANAN INDIA

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2023
Middle Jurassic theropods have a scanty record worldwide, especially from Gondwana. In India, where Jurassic theropods are particularly rare and only represented by a few isolated teeth and some badly preserved bones, there is currently no record of ...
Archana Sharma   +2 more
doaj   +1 more source

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