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1. chinaXiv:202108.00084 [pdf]

A Temnospondyl Tooth from the Middle Triassic of the Ordos Basin, Shaanxi Province

WU Rui; TU Li; HAN Feng-Lu
Subjects: Biology >> Zoology

An isolated large temnospondyl tooth was discovered from the Middle Triassic Tongchuan Formation, Weibei Oilfield, Ordos Basin, Shaanxi Province of China. Compared with the teeth of crocodylomorphs, plesiosaurs and temnospondyls, the tooth can be referred to temnospondyl based on the following features: the crown is elongated and recurved with a circular cross-section; there are no denticles or carinae on the crown; well-marked apicobasal grooves are shown on the crown surface. This tooth represents the first temnospondyl found in the Middle Triassic Tongchuan Formation and is the youngest fossil record of temnospondyls in the North China Block.

submitted time 2021-08-11 From cooperative journals:《古脊椎动物学报》 Hits4249Downloads276 Comment 0

2. chinaXiv:202108.00085 [pdf]

A cuboid bone of a large Late Miocene elasmothere from Qingyang, Gansu, and its morphological significance

ZHANG Xiao-Xiao; SUN Dan-Hui
Subjects: Biology >> Zoology

A cuboid specimen collected from the Late Miocene stratum at Qingyang, Gansu, China is described here. The size of the Qingyang specimen is comparatively huge, even larger than the average size of Elasmotherium caucasicum collected from Nihewan, Hebei, China. The morphology of the Qingyang specimen is identical to that of other specimens of Elasmotheriini; thus, the Qingyang specimen belongs to a huge elasmothere, most probably Sinotherium. By comparison with extant rhino species, the complex of the main body and the apophysis exhibit functional significance. The angle between the frontal plate of the cuboid and the main axis of the apophysis can suggest the ecological conditions occupied by an elasmothere. From analysis of the morphology of the cuboid, Sinotherium and the more derived elasmotheres probably lived in forested or wooded environments, differing from the previous hypothesis of their paleoenvironment.

submitted time 2021-08-11 From cooperative journals:《古脊椎动物学报》 Hits3721Downloads268 Comment 0

3. chinaXiv:202108.00059 [pdf]


张萦倩; 赵光义; 韩雨薇; 张静怡; 曹成琦; 王力; 张昆林
Subjects: Psychology >> Applied Psychology


submitted time 2021-08-11 Hits5401Downloads316 Comment 0

4. chinaXiv:202108.00058 [pdf]

Metagenomic evidence for the coexistence of SARS and H1N1 in patients from 2007-2012 flu seasons

Qi Liu; Zhenglin Du; Sihui Zhu; Wenming Zhao; Hua Chen; Yongbiao Xue
Subjects: Biology >> Microbiology

By re-analzying public metagenomic data from 101 patients infected with influenza A virus during the 2007-2012 H1N1 flu seasons in France, we identified 22 samples with SARS-CoV sequences. In 3 of them, the SARS genome sequences could be fully assembled out of each. These sequences are highly similar (99.99% and 99.7%) to the artificially constructed recombinant 5 SARS-CoV (SARSr-CoV) strains generated by the J. Craig Venter Institute in USA. Moreover, samples from different flu seasons have different SARS-CoV strains, and the divergence between these strains cannot be explained by natural evolution. Our study also shows that retrospective studies using public metagenomic data from past major epidemic outbreaks serves as a genomic strategy for the research of origins or spread of infectious diseases.

submitted time 2021-08-11 Hits6530Downloads818 Comment 0

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