New ophthalmosaurid ichthyosaurs from the European lower cretaceous demonstrate extensive ichthyosaur survival across the Jurassic–Cretaceous boundary [PDF]
Background Ichthyosauria is a diverse clade of marine amniotes that spanned most of the Mesozoic. Until recently, most authors interpreted the fossil record as showing that three major extinction events affected this group during its history: one ...
Ralf Kosma (189585) +65 more
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Comparative cranial osteology of subadult eucentrosauran ceratopsid dinosaurs from the Two Medicine Formation, Montana, indicates sequence of ornamentation development and complex supraorbital ontogenetic change [PDF]
The eucentrosauran centrosaurines Einiosaurus procurvicornis and Achelousaurus horneri are the two most commonly recovered ceratopsids from the Campanian Two Medicine Formation of northwestern Montana, USA.
JOHN P. WILSON, JOHN B. SCANNELLA
doaj +1 more source
A new dromaeosaurid (Dinosauria: Theropoda) from the Upper Cretaceous Wulansuhai Formation of Inner Mongolia, China [PDF]
We describe a new dromaeosaurid theropod from the Upper Cretaceous Wulansuhai Formation of Bayan Mandahu, Inner Mongolia. The new taxon, Linheraptor exquisitus gen. et sp.
Tan, Q. +32 more
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Rifts, orogens, cratons, and global tectonics: Introduction
A key role in developing the Earth theory is played by comparative studies of orogens, rifts, and platforms in the equatorial, middle and high latitudes of Asia and the adjacent Arctic regions.
S. V. Rasskazov
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Dinosaur footprints and other Ichnofauna from the Cretaceous Kem Kem Beds of Morocco [PDF]
We describe an extensive ichnofossil assemblage from the likely Cenomanian-age 'lower' and 'upper' units of the 'Kem Kem beds' in southeastern Morocco.
Baidder, Lahssen +23 more
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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
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Dinosaur Bones from the Maestrazgo UNESCO Global Geopark (Teruel, Spain) [PDF]
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
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Early Cretaceous biogeographic and oceanographic synthesis of Leg 123 (off Northwestern Australia) [PDF]
Biogeographic observations made by Leg 123 shipboard paleontologists for Lower Cretaceous nannofossils, foraminifers, radiolarians, belemnites, and inoceramids are combined in this chapter to evaluate the paleoceanographic history of the northwestern ...
Bown, P. +13 more
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PALEONTOLOGY AND PALEOGEOGRAPHY OF THE TETHYIAN AGGLUTINATED BENTHIC FORAMINIFERAL SPECIES OF THE GENUS SPIROPLECTINELLA [PDF]
Thirty three small diagnostic benthic foraminiferal species of the Textulariid genus Spiroplectinella are common in the Late Cretaceous-Neogene rocks from many Tethyan localities: North Atlantic (USA, Mexico, Caribbean), South America (Brazil, Argentina,
Haidar Salim Anan
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An Upper Cretaceous ichthyodectiform fish from Kyushu, Japan [PDF]
Ichthyodectiform fishes are an exclusively extinct basal teleost clade, with a temporal range from the Middle Jurassic (Bathonian) to Upper Cretaceous (Maastrichtian).
Yoshitaka Yabumoto +2 more
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