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1. chinaXiv:201906.00025 [pdf]

The tetrapod fauna of the upper Permian Naobaogou?Formation of China— 4. the diversity of dicynodonts

LIU Jun
Subjects: Biology >> Zoology

The Permian dicynodont records were previously rare in North China, but many?dicynodont specimens have been collected from the Naobaogou Formation in Daqingshan area,?Nei Mongol since 2009. Among these specimens, seven morphotypes have been identified, and?they may represent seven different species: two of them are closely related to Daqingshanodon?limbus, three or four are closely related to Jimusaria sinkianensis, and one may be closely related?to Turfanodon. This study shows the dicynodonts also have a high diversity at the species level in?North China.

submitted time 2019-06-11 From cooperative journals:《古脊椎动物学报》 Hits7686Downloads741 Comment 0

2. chinaXiv:201808.00145 [pdf]

New progress on the correlation of Chinese terrestrial Permo-Triassic strata

LIU Jun
Subjects: Biology >> Other Disciplines of Biology

This paper reviews recent works on the age of Chinese terrestrial Permo-Triassic strata, mainly based on the isotopic dating and the tetrapod correlation. For the application of U-Pb dating methods for the stage-level division of Permo-Triassic strata, the best method is the Thermal Ionization Mass Spectrometer (TIMS), while the Secondary Ion Mass Spectroscopy (SIMS) can be used for many cases; however, the most popular Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICPMS), which has nearly 4% error (>8 Myr), is of little use (Li et al., 2015).

submitted time 2018-07-18 From cooperative journals:《古脊椎动物学报》 Hits4817Downloads927 Comment 0

3. chinaXiv:201711.01913 [pdf]

New discoveries from the Sinokannemeyeria-Shansisuchus Assemblage Zone: 3. Archosauriformes from Linxian, Shanxi, China

LIU Jun; Corwin SULLIVAN
Subjects: Biology >> Zoology

The tetrapod assemblage from the Middle Triassic upper part of the Ermaying Formation of northern China has been known for two decades as the Sinokannemeyeria-Shansisuchus Assemblage because of the characteristic presence of the dicynodont therapsid Sinokannemeyeria and the erythrosuchid archosauriform Shansisuchus. Recently a Sinokannemeyeria species has been described from Member I of the Tongchuan Formation, which overlies the Ermaying, near Baidaoyu, Linxian, Shanxi Province. Here we document archosauriform specimens from the Baidaoyu site, including a partial Shansisuchus skeleton and some additional bones from probable suchian archosaurs, which constitute the first archosauriform material known from Member I of the Tongchuan. The most intriguing archosauriform specimens are a large ilium probably attributable to an unusual poposauroid, and a small, strangely shaped element that appears to represent a highly autapomorphic suchian calcaneum. Given the presence of both Sinokannemeyeria and Shansisuchus at Baidaoyu, the stratigraphic range of the Sinokannemeyeria-Shansisuchus Assemblage can be considered to extend upward into the Tongchuan Formation, although with possible changes in faunal composition. The occurrence of a poposauroid ilium at the Baidaoyu locality adds to the evidence that poposauroids diversified extensively during the Middle Triassic.

submitted time 2017-11-07 From cooperative journals:《古脊椎动物学报》 Hits1093Downloads588 Comment 0

4. chinaXiv:201605.01468 [pdf]

RNAcentral: an international database of ncRNA sequences

Petrov, Anton I.; Kay, Simon J. E.; Gibson, Richard; Kulesha, Eugene; Staines, Dan; Bruford, Elspeth A.; Wright, Mathew W.; Burge, Sarah; Finn, Robert D.; Kersey, Paul J.; Cochrane, Guy; Bateman, Alex; Griffiths-Jones, Sam; Harrow, Jennifer; Chan, Patricia P.; Lowe, Todd M.; Zwieb, Christian W.; Wower, Jacek; Williams, Kelly P.; Hudson, Corey M.
Subjects: Biology >> Biophysics >> Biochemistry & Molecular Biology

The field of non-coding RNA biology has been hampered by the lack of availability of a comprehensive, up-to-date collection of accessioned RNA sequences. Here we present the first release of RNAcentral, a database that collates and integrates information from an international consortium of established RNA sequence databases. The initial release contains over 8.1 million sequences, including representatives of all major functional classes. A web portal (http://rnacentral.org) provides free access to data, search functionality, cross-references, source code and an integrated genome browser for selected species.

submitted time 2016-05-12 Hits1183Downloads607 Comment 0

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