Results 151 to 160 of about 211,638 (344)
Geological Journal, EarlyView.This study reports the exceptional preservation of the Eocene freshwater bivalve Batissa sitakaraensis from Hokkaido, Japan. Multimodal analyses reveal that both the aragonitic shell mineralogy and the delicate organic periostracum retain their original structural and chemical characteristics after millions of years.
Taro Yoshimura +4 more
wiley +1 more source
Lower and Middle Cretaceous terrestrial ecosystems
, 1998 Lower Cretaceous; Middle Cretaceous; terrestrial ...
edited by Spencer G. Lucas, James I. Kirkland and John W. Estep
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Geological Journal, EarlyView.Early zircon saturation and crystallisation occur in mafic (52–54 wt.% SiO2) lavas at Tengchong volcanic field. These early formed zircons with high δ18O (6.6‰–7.9‰) indicates mantle enrichment by subducted supracrustal materials. ABSTRACT Late Pleistocene (< 0.2 Ma) mafic and evolved volcanic rocks occur in northern Tengchong Volcanic Field, SE ...
Lizhu Wang, Haibo Zou
wiley +1 more source
Late Cretaceous Vertebrates from the Western Interior
, 2006 Late Cretaceous; Cretaceous; vertebrates; Western ...
Spencer G. Lucas and Robert M. Sullivan, eds.
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Opalized archosaur remains from the Bulldog Shale (Aptian: Lower Cretaceous) of South Australia
Terrestrial reptile remains are very rare in the Lower Cretaceous of South Australia, but include the holotype of the small theropod Kakuru. Here, we review this taxon and other archosaur specimens collected from the Bulldog Shale (Aptian) of Andamooka ...
Benson, R. B. J. +2 more
core +1 more source
Biochronology of the terminal Cretaceous calcareous nannofossil zone of Micula prinsii
, 1993 Seven Deep Sea Drilling Project (DSDP) sites, were examined in order to determine the chronology of the late Maastrichtian calcareous nannofossil Micula prinsii Zone. Six sites span the terminal Cretaceous palaeolatitudinal interval between 36°S and 37°N
Henriksson, Anders
core +1 more source
Geological Journal, EarlyView.The study outlines the tectono‐sedimentary evolution of the İnegöl Basin in north‐western Anatolia. Basin formation was controlled by interacting extensional and strike‐slip fault systems linked to uplift of the Uludağ Massif. Terrestrial sedimentation from the Miocene to Pleistocene is reconstructed using abundant fossil mammal assemblages that ...
M. Cihat Alçiçek +2 more
wiley +1 more source
A diminutive pterosaur from the uppermost Maastrichtian chalk of Denmark
Acta Palaeontologica PolonicaA fragment of pterosaur finger bone was found in the chalk in the uppermost Maastrichtian, Højerup Member of the Møns Klint Formation strata of Holtug quarry at the UNESCO World Heritage site Stevns Klint.
Jesper Milàn +2 more
doaj +1 more source
An Ichthyornis-like bird from the earliest Late Cretaceous (Cenomanian) of European Russia [PDF]
, 2017 © 2017 Elsevier LtdOrnithuromorph birds (the clade which includes modern avian radiation) first appeared in the Early Cretaceous in Asia and achieved a great diversity during the latest ages of the Late Cretaceous (Campanian and Maastrichtian).
Popov E., Zelenkov N., Averianov A.
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Journal of Quaternary Science, EarlyView.ABSTRACT Constraining Arctic catchment response to Holocene climate change is vital for understanding future environments. We present detailed sedimentological, geochemical and grain size end‐member analysis of two Holocene (~7.0 ka to present) lake sequences, S1 and S2, close to Zackenberg, Northeast Greenland.
Kathryn Adamson +6 more
wiley +1 more source