Results 21 to 30 of about 39,911 (283)

The giant pliosaurid that wasn’t—revising the marine reptiles from the Kimmeridgian, Upper Jurassic, of Krzyżanowice, Poland [PDF]

open access: yesActa Palaeontologica Polonica, 2021
Marine reptiles from the Upper Jurassic of Central Europe are rare and often fragmentary, which hinders their precise taxonomic identification and their placement in a palaeobiogeographic context.
Daniel Madzia   +2 more
doaj   +1 more source

The oldest “intermetamorphic” larva of an achelatan lobster from the Lower Jurassic Posidonia Shale, South Germany [PDF]

open access: yesActa Palaeontologica Polonica, 2019
Achelatan lobsters, also known as spiny and slipper lobsters, develop via a highly specialised larval form. This special larva, phyllosoma, is flat, translucent, possesses elongate legs and can grow to enormous sizes.
Joachim T. Haug   +2 more
doaj   +1 more source

Dinosaur Bones from the Maestrazgo UNESCO Global Geopark (Teruel, Spain) [PDF]

open access: yesGeoconservation Research, 2021
The current territory of the Maestrazgo UNESCO Global Geopark has provided fossils that pioneered dinosaur research in Spain. The first Spanish dinosaur, Aragosaurus ischiaticus (published in 1987), five other new genera of dinosaurs and six species were
Luis Alcalá, Rafael Royo-Torres
doaj   +1 more source

Morphological variations and geographic distribution of the rare Middle Jurassic ammonite Oecoptychius refractus

open access: yesActa Palaeontologica Polonica, 2023
The rare Middle Jurassic ammonite Oecoptychius refractus is revisited based on material collected in southern Poland (Ogrodzieniec quarry) and France (St.-Laon near Loudun, western France). Based on available data and an evaluation of the literature, O.
SREEPAT JAIN   +3 more
doaj   +1 more source

Ophiolite association of Cape Fiolent (western part of the Mountainous Crimea) – the upper age constraint according to the U-Pb isotope dating of plagiorhyolites (Monakh Cliff)

open access: yesЗаписки Горного института, 2022
The article presents the results of U-Pb isotope dating (SHRIMP-II, VSEGEI, Saint Petersburg) of zircon crystals extracted from plagiorhyolites of the Monakh Cliff in the area of Cape Fiolent in the western part of the Mountainous Crimea (southern suburb
Nikolay B. Kuznetsov   +3 more
doaj   +1 more source

Jurassic

open access: yesDanmarks Geologiske Undersøgelse Serie B, 1982
During Early Jurassic time, deposition continued in the basinal areas occupied by Triassic sedimentation. The Danish Central Graben subsided strongly and more than 4000 m of sediments were deposited during Jurassic time (fig. 14). North of the area the thickness seems less than 2000 m and, in the Norwegian-Danish Basin, approximately 1200 m. The rhythm
Jens Ole Koch, Lise Holm, Olaf Michelsen
openaire   +2 more sources

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

Source-reservoir rock assemblages and hydrocarbon accumulation models in the Middle-Lower Jurassic of eastern Sichuan Basin, China

open access: yesFrontiers in Earth Science, 2023
The eastern Sichuan Basin in China holds vast potential for oil and gas exploration in the Lower-Middle Jurassic strata. However, the geological characteristics and hydrocarbon accumulation patterns of this region remain largely unclear.
Rong Bai   +14 more
doaj   +1 more source

Seismic and sequence stratigraphy of Late Jurassic in Nasiriyah oil-field [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة
The study scope has focused on the Late Jurassic Group: the three genetically related Najmah, Gotnia, and Sulaiy formations beneath an area of more than 40000 Km2 capitalizing on huge integrated 3-D, 2-D seismic and well data compiled with competent ...
Sabah Shejiri
doaj   +1 more source

Sieve-type normal pore canals in Jurassic ostracods: A review with description of a new genus [PDF]

open access: yesActa Palaeontologica Polonica, 2020
Sieve-type normal pore canals (StPC) occur commonly in living and fossil cytheroid ostracods but their biological function(s) and evolutionary history are poorly known. The new genus Minyocythere and its four species: Minyocythere macroporosa sp. nov., M.
Alan R. Lord   +2 more
doaj   +1 more source

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