Results 21 to 30 of about 12,075 (246)
Geochemistry, Geophysics, Geosystems, 2018 New petrological and geochemical data for Early Cretaceous volcanic rocks in the North China Craton (NCC) combined with published data of cotemporaneous volcanic rocks in the NCC and eastern Central Asian Orogenic Belt (ECAOB) are used to understand ...
Sheng‐Ping Qian +7 more
doaj +1 more source
A giant ornithomimosaur from the Early Cretaceous of China [PDF]
Proceedings of the Royal Society B: Biological Sciences, 2009 Ornithomimosaurs (ostrich-mimic dinosaurs) are a common element of some Cretaceous dinosaur assemblages of Asia and North America. Here, we describe a new species of ornithomimosaur, Beishanlong grandis , from an associated, partial postcranial skeleton from the Aptian-Albian Xinminpu Group of northern Gansu, China.
Peter J, Makovicky +5 more
openaire +2 more sources
Frontiers in Earth ScienceThe Moganshan Volcanic Basin is located in the northeastern section of the Ganhang volcanic-tectonic-uranium polymetallic metallogenic belt. To explore the uranium mineralization potential of these volcanic rocks, petrographic, elemental geochemical ...
Xiaolong Wang +7 more
doaj +1 more source
PLoS ONE, 2014 The fossil record for neoceratopsian (horned) dinosaurs in the Lower Cretaceous of North America primarily comprises isolated teeth and postcrania of limited taxonomic resolution, hampering previous efforts to reconstruct the early evolution of this ...
Andrew A Farke +3 more
doaj +1 more source
A gliding lizard from the Early Cretaceous of China [PDF]
Proceedings of the National Academy of Sciences, 2007 Gliding is an energetically efficient mode of locomotion that has evolved independently, and in different ways, in several tetrapod groups. Here, we report on an acrodontan lizard from the Early Cretaceous Jehol Group of China showing an array of morphological traits associated with gliding.
Pi-Peng, Li +3 more
openaire +2 more sources
Frontiers in Earth Science, 2023 The evolution patterns of the Neo-Tethys Himalayas have been a major topic of research, particularly in the Neo-Tethys Ocean. The geological field investigations were conducted in the Late Jurassic-Early Cretaceous Sangxiu Formation in the Tsomei Longzi ...
Feng Wu +11 more
doaj +1 more source
Journal of the Palaeontological Society of India, 2023 A palynological study on subsurface Early Cretaceous sediments (1550–1860 m) in well JM-A located in Dhansiri Valley, Upper Assam Shelf has been carried out for determination of age and depositional environment.
Divya Geddada, Kanchi Narsimha
doaj +1 more source
Early Cretaceous Monocots: A Phylogenetic Evaluation
, 2008 Doyle, James A., Endress, Peter K., Garland R. Upchurch, Jr. (2008): Early Cretaceous Monocots: A Phylogenetic Evaluation.
Doyle, J A, Endress, P K, Upchurch, G R
openaire +3 more sources
South Atlantic paleobathymetry since early Cretaceous [PDF]
Scientific Reports, 2017 AbstractWe present early Cretaceous to present paleobathymetric reconstructions and quantitative uncertainty estimates for the South Atlantic, offering a strong basis for studies of paleocirculation, paleoclimate and paleobiogeography. Circulation in an initially salty and anoxic ocean, restricted by the topography of the Falkland Plateau, Rio Grande ...
Lucía Pérez-Díaz, Graeme Eagles
openaire +2 more sources
Journal of Asian Earth Sciences: XThis study uses a multi-proxy approach on Cretaceous shales (consisting of early Cretaceous Giumal shale and late Cretaceous Chikkim shale of Lagudarsi Group) from the Spiti region of the Indian Tethys Himalaya to assess paleo-weathering, redox ...
Heena Khan +3 more
doaj +1 more source