Results 61 to 70 of about 5,873 (220)
Basin‐scale dataset reveals widespread hydrocarbon venting at the seafloor in the northern Gulf of Mexico. Hydrocarbon release at the seafloor is related to the occurrence of the underlying Louann salt and the gas hydrate stability zone. ABSTRACT The release of hydrocarbons, pore water and fluidized sediments impacts seafloor morphology, marine ...
Muhedeen A. Lawal +3 more
wiley +1 more source
Diversification of the Neoselachii (Chondrichthyes) during the Jurassic and Cretaceous [PDF]
The Neoselachii are a monophyletic group including all of the extant sharks and rays. They underwent rapid diversification throughout the Jurassic and Cretaceous, going from low-diversity assemblages of members of extinct orders in the Late Triassic to ...
Underwood, Charlie J.
core +1 more source
ABSTRACT Numerous buildings, monuments, and infrastructural works in Verona were constructed during the Roman period using stone, a material abundantly available from quarrying areas located relatively close to the city. Petrographic investigations conducted by Transmitted Polarized Light Optical Microscopy (TPL‐OM) and complemented by colorimetric ...
Eliana Bridi +3 more
wiley +1 more source
A new palinurid, Palaeopalinurus czarnieckii, is recorded from Upper Tithonian Štramberk-type limestones at Inwałd, southern Poland. The specimen shows better preservation anteriorly than available specimens of the type species of the genus.
Krobicki Michał, Fraaije René H.B.
doaj +1 more source
The oldest known snakes from the Middle Jurassic-Lower Cretaceous provide insights on snake evolution [PDF]
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
First pterosaur footprints from the Tera Group (Tithonian–Berriasian) Cameros Basin, Spain
The discovery of the Laran˜e (La Rioja, Spain) ichnological site provides the first outcrop pterosaur footprints in the Tera Group of the Cameros Basin. The footprint have characteristics similar to some of those already known in the Oncala Group, suggesting that possibly pterosaurs, which lived in this area during the deposition of the Tithonian ...
Hernández Medrano, Nieves +2 more
openaire +3 more sources
Our research uses a multidisciplinary approach, including organic and inorganic geochemistry, biostratigraphy, carbon isotope geochemistry and organic petrography to reconstruct depositional conditions and organic matter accumulation during the Pliensbachian and Toarcian.
Premila Wijesinghe +7 more
wiley +1 more source
The effects of the spreading of the Central Atlantic during the Middle Jurassic on dinosaur faunas [PDF]
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
This paper presents a new protocol for the laboratory preparation of archaeological samples. Ceramics that have been hand‐crafted using different sediments as raw materials were collected in a Roman Villa sited in Fiumana (FC), Italy. This method aims at concentrating and analysing heavy minerals in the 15–250 μm grain size fraction, studying the ...
S. Andò +6 more
wiley +1 more source
The present paper is dedicated to a new Terebratulidae locality within a Upper Tithonian unit (Biancone s.l.) near Cortina d'Ampezzo. The investigated area is the Tofane Mountains (Third or Inner Tofana).
CHIARA BENIGNI
doaj

