Results 81 to 90 of about 8,265,842 (328)

Geology of the Mt. Cosce sector (Narni Ridge, Central Apennines, Italy) [PDF]

open access: yes, 2016
This paper is companion to a 1:15,000 scale geological map of the southern sector of the Narni Range in Central Italy. This sector of the Apenninic Chain was affected by the western Tethyan rifting stage during the Early Jurassic, and the inherited ...
Cipriani, Angelo
core   +1 more source

A second species of non‐crocodyliform crocodylomorph from the Late Triassic fissure deposits of southwestern UK: Implications for locomotory ecological diversity in Saltoposuchidae

open access: yesThe Anatomical Record, EarlyView.
Abstract The Late Triassic–Early Jurassic fissures of the Bristol Channel area (southwest England and south Wales) are renowned for their diverse vertebrate faunas. These assemblages have yielded an array of predominantly small‐bodied forms that are crucial to our understanding of the early evolution of several major tetrapod clades.
Ewan H. Bodenham   +4 more
wiley   +1 more source

New Early Jurassic thylacocephalan assemblage from the Western Carpathians in Slovakia [PDF]

open access: yesActa Palaeontologica Polonica
Thylacocephalans (Euarthropoda: Pancrustacea) are extinct marine pancrustaceans characterised by a folded shield, with fossils known from the Upper Ordovician to the Upper Cretaceous, reaching a diversity peak in the Triassic.
Alexis Gerbe   +2 more
doaj   +1 more source

Trans-border (east Serbia/west Bulgaria) correlation of the Jurassic sediments: Main Jurassic paleogeographic units [PDF]

open access: yesGeološki Anali Balkanskoga Poluostrva, 2006
In the region across the Serbian/Bulgarian state border, there are individualized 5 Jurassic paleogeographic units (from West to East): (1) the Thracian Massif Unit without Jurassic sediments; (2) the Lužnica-Koniavo Unit - partially with Liassic in ...
Tchoumatchenco Platon   +3 more
doaj   +1 more source

The effects of the spreading of the Central Atlantic during the Middle Jurassic on dinosaur faunas [PDF]

open access: yes, 2012
The spreading of the Central Atlantic is a complex series of events that include a ridge jump to the east and a ridge jump to the west at c. 170Ma and c. 162Ma respectively.
Clark, N.D.L.
core  

Analysis of the Importance of Extension in Accounting for the Post-Carboniferous Subsidence of the North Sea Basin [PDF]

open access: yes, 1986
Post Carboniferous sedimentary deposition in the Central North Sea basins can be separated into three major periods: Permian, Triassic and mid-Jurassic through present.
Hellinger, Steven J.   +2 more
core   +1 more source

Inter‐ and intraspecific variation in theropod dinosaur dental microwear and its palaeoecological implications

open access: yesThe Anatomical Record, EarlyView.
Abstract Differences in skull and tooth morphology, stomach contents, and estimated bite force between medium‐to‐large sized (≥100 kg) predatory theropod dinosaurs have long been suspected to correlate with differences in their diets and dietary guilds (e.g., hypercarnivory, piscivory).
Cassius Morrison   +9 more
wiley   +1 more source

Jurassic Terrestrial Shale Gas Potential of the Northern Kashi Sag in the Tarim Basin, Northwestern China

open access: yesGeofluids, 2021
Evaluation of terrestrial shale gas resource potential is a hot issue in unconventional oil and gas exploration. Organic-rich shales are widely developed in the Jurassic strata of Tarim Basin, but their shale gas potential has not been described well. In
Wei Wu   +6 more
doaj   +1 more source

The oldest known snakes from the Middle Jurassic-Lower Cretaceous provide insights on snake evolution [PDF]

open access: yes, 2015
The previous oldest known fossil snakes date from ∼100 million year old sediments (Upper Cretaceous) and are both morphologically and phylogenetically diverse, indicating that snakes underwent a much earlier origin and adaptive radiation.
Apesteguía, Sebastián   +3 more
core   +1 more source

REE patterns of microbial carbonate and cements from Sinemurian (Lower Jurassic) siliceous sponge mounds (Djebel Bou Dahar, High Atlas, Morocco)

open access: yes, 2015
Marine microbialites serve as robust seawater rare earth element and yttrium (REE + Y) proxies through many intervals of Earth history, but questions remain about the partitioning of REEs into different coeval carbonate phases, potential syn-depositional
G. Porta, G. Webb, I. McDonald
semanticscholar   +1 more source

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