Geochemistry, Geophysics, Geosystems, 2023 The Early Cretaceous is an important time of transition in Earth history, marked by a succession of oceanic anoxic events and carbon cycle perturbations that drove changes on land and in the ocean.
Marina B. Suarez +8 more
doaj +1 more source
The Chicxulub Impactor: Comet or Asteroid? [PDF]
, 2021 A recent paper by Siraj & Loeb (2021) entitled "Breakup of a long-period comet as the origin of the dinosaur extinction" attempts to revive the perennial debate about what type of body hit the Earth 66 million years ago, triggering the end-Cretaceous extinction. Here we critique the paper and assess the evidence it presents.
arxiv +1 more source
Petrography and diagenetic history of the Shurijeh Formation (Late Kimmeridgian–Hautrivian) at Estarkhi section, Kopet-Dagh Basin, NE Iran [PDF]
Journal of Stratigraphy and Sedimentology Researches, 2021 The Shurijeh Formation is a Late Jurassic–Early Cretaceous (Late Kimmeridgian–Hauterivian) siliciclastic rock unit of the Kopet-Dagh Basin, up to 392 m thick.
Mehdi Reza Poursoltani
doaj +1 more source
Iridescent plumage in a juvenile dromaeosaurid theropod dinosaur
Acta Palaeontologica Polonica, 2023 Colour reconstructions have provided new insights into the lives of dinosaurs and other extinct animals, by predicting colouration patterns from fossilised pigment-bearing organelles called melanosomes.
ANGUS D. CROUDACE +4 more
doaj +1 more source
Acta Palaeontologica Polonica, 2023 Numerous dromaeosaurid taxa recovered from the Upper Cretaceous strata of the Gobi Desert raise questions over niche partitioning among closely related species.
ŁUKASZ CZEPIŃSKI
doaj +1 more source
Adjoint models of mantle convection with seismic, plate motion, and stratigraphic constraints: North America since the Late Cretaceous [PDF]
, 2009 We apply adjoint models of mantle convection to North America since the Late Cretaceous. The present-day mantle structure is constrained by seismic tomography and the time-dependent evolution by plate motions and stratigraphic data (paleoshorelines ...
Gurnis, Michael +2 more
core +1 more source
Reassessment of amber-bearing deposits of Provence, southeastern France
BSGF - Earth Sciences Bulletin, 2021 The presence of “geological” amber (or “succin” in old French monographs) has been reported for several centuries in the Mesozoic deposits of Provence, southeastern France.
Saint Martin Jean-Paul +9 more
doaj +1 more source
A taxonomic and phylogenetic review of the anhanguerid pterosaur group Coloborhynchinae and the new clade Tropeognathinae [PDF]
Acta Palaeontologica Polonica, 2020 Anhanguerids are a particular group of pterodactyloid pterosaurs, characterized mainly by their rostral sagittal crests, well laterally expanded jaw tips and enlarged anterior teeth.
Borja Holgado, Rodrigo V. Pêgas
doaj +1 more source
The ophiolite-related Mersin Melange, southern Turkey: its role in the tectonic–sedimentary setting of Tethys in the Eastern Mediterranean region [PDF]
, 2004 WOS: 000222988100001The Mersin Melange underlies the intact Mersin Ophiolite and its metamorphic sole to the south of the Mesozoic Tauride Carbonate Platform in southern Turkey The Melange varies from chaotic melange to broken formation, in which some ...
Parlak, Osman, Robertson, Alastair
core +1 more source
The eruptive tempo of Deccan volcanism in relation to the Cretaceous-Paleogene boundary
Science, 2019 Two timelines for extinction The Cretaceous-Paleogene extinction that wiped out the nonavian dinosaurs 66 million years ago was correlated with two extreme events: The Chicxulub impact occurred at roughly the same time that massive amounts of lava were ...
C. Sprain +5 more
semanticscholar +1 more source