Palaeogeography, Palaeoclimatology, Palaeoecology
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#1Giovan Peyrotty (University of Geneva)
#2Hayato Ueda (Hirosaki University)
Last. Rossana Martini (University of Geneva)H-Index: 20
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Abstract Due to their accretion on the Circum–Pacific area during the Jurassic and the Cretaceous, Upper Triassic carbonates from the Panthalassa occur very scarcely and with relatively poor preservation in accretionary complexes. However, they represent a unique opportunity to improve our knowledge of the depositional conditions in tropical regions of the Panthalassa. Recognized as a cradle of life, shallow–water carbonates are also of great importance to understand of how life evolved out of t...
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#1Michael Steiner (FU: Free University of Berlin)H-Index: 14
#2Ben YangH-Index: 5
Last. Shan Chang (China University of Geosciences)H-Index: 3
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Abstract Rich small skeletal fossil assemblages are described from the Yanjiahe Formation and Tianzhushan Member of southern Huangling Anticline. The Anabarites trisulcatus– Protohertzina anabarica Assemblage Zone (Small Skeletal Fossil Zone 1) is recognized in the middle to upper Yanjiahe Formation, while the thin topmost conglomeratic limestone unit yielded a mixed assemblage resulting from reworking and redeposition of source material of Small Skeletal Fossil Zones 1 to 3 (including Anabarite...
#1Wei Du (China University of Petroleum)H-Index: 1
#2Youliang Ji (China University of Petroleum)H-Index: 2
Last. Yue Zhang (China University of Petroleum)
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Abstract The Dongying Formation (Ed) and the first member of the Shahejie Formation (Es1) in the central Raoyang Sag cover about 1705 m-long sedimentary series of terrestrial lacustrine infill. We employed the gamma-ray (GR) log data as a paleoclimatic and paleoenvironmental proxy to conduct the high-resolution cyclostratigraphy research in well W33 and W62. Prominent sedimentary cycles in decameters and meters were revealed by multi-taper (MTM) power spectra, evolutionary fast Flourier transfor...
#1Alice Giannetti (University of Alicante)H-Index: 9
#2Santiago Falces-Delgado (University of Alicante)H-Index: 1
Last. José Francisco Baeza-Carratalá (University of Alicante)H-Index: 6
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Abstract Palaeoichnology is known to be a powerful tool for the characterisation of unconformity surfaces. In a Neogene post-orogenic basin of the Betic domain (Alicante, SE Spain), a complex Miocene transgressive event on an exposed Eocene succession is recorded. The resulting unconformity surface as well as the overlying beds resulting from the establishment of a nearshore environment are ichnologically and palaeoecologically analysed. Different boring structures related to the Entobia ichnofa...
Abstract The Neogene Ica Formation is a major sedimentary deposit in central Amazonia (Brazil) that is critical to the understanding and modeling of the evolution of the Amazon Basin. However, its chronostratigraphy is poorly defined, mostly because it is not fossiliferous and it does not contain volcanic ash levels. This study is the first attempt at the absolute dating of the sediments and overlying soils of the Ica Formation by electron paramagnetic resonance (EPR) of radiation-induced defect...
Abstract The lower Miocene Santa Cruz Formation (dated to ~18–16 Ma) of Southern Patagonia, Argentina, preserves rich vertebrate faunas, which are representative of communities that existed prior to the Great American Biotic Interchange (GABI). Some previous researchers have hypothesized that these pre-GABI faunas had a low richness of mammalian carnivores (an impoverished predator guild), while others argue for a predator/prey ratio similar to those of recent communities. In this paper, we anal...
#1Zeyang Liu (Durham University)
#2David Selby (China University of Geosciences)H-Index: 36
Last. Shu-zhong Shen (NU: Nanjing University)H-Index: 32
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Abstract The Permian–Triassic mass extinction event is the most severe biotic crisis during the Phanerozoic. The trigger of this event has been widely linked with massive volcanic activity associated with the Siberian Traps Large Igneous Province. However, the direct link is still lacking to fully understand the event. In this study, we apply osmium isotope (187Os/188Os, or Osi) stratigraphy across the Permian–Triassic boundary interval in the Meishan section of South China. The Os isotope strat...
Abstract Genetic control undoubtedly plays the most decisive role in the development of characters in rhynchonellides, especially in those structural features such as shell microstructure and brachidial architecture. However, considering the relationship between shell microstructure and type of crura in post-Palaeozoic rhynchonellides supported by recent growing research, the present study links this striking matching to the distribution of rhynchonellide morphogroups around the main post-Palaeo...
#1Shihu Li (CAS: Chinese Academy of Sciences)H-Index: 8
#2Xueping Ji (Yunnan University)
Last. Rixiang Zhu (CAS: Chinese Academy of Sciences)H-Index: 53
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Abstract The southeastern margin of the Tibetan Plateau has a number of well-known Late Miocene localities that have yielded fossil hominoids belonging to Lufengpithecus and Khoratpithecus. These localities provide critical evidence about the evolutionary history of hominoids, including their response to environmental changes associated with uplift of the Tibetan Plateau. Here we present magnetostratigraphic dating of the Baoshan hominoid locality in Yunnan, southwestern China, which, based on p...
#1Krzysztof Hryniewicz (PAN: Polish Academy of Sciences)H-Index: 10
#2Sofia Bakayeva (PAN: Polish Academy of Sciences)
Last. Andrzej Kaim (PAN: Polish Academy of Sciences)H-Index: 18
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Abstract The paper reports rare occurrence of deep-water solemyid and lucinid bivalves from Cenozoic sequences of Outer Eastern Carpathians, Ukraine. The studied bivalves occur in the Eocene Pasichna Formation, represented by deep-water marls and pelagic limestones intercalated with thin-bedded calcareous sandstones yielding material re-deposited from shallow water. This find offered a chance to study the unaltered shell breakage pattern of these deep-burrowing solemyid bivalves buried in situ b...
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