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Li Z.,Beijing Museum of Natural History | Wang N.,Chinese Academy of Agricultural Sciences | Yang D.,China Agricultural University
Zootaxa | Year: 2014

The species of the genus Hybos Meigen from Northwest China are reviewed. The following five species are described as new to science: Hybos elongatus sp. nov., H. flavitibialis sp. nov., H. projectus sp. nov., H. qinlingensis sp. nov., and H. xii sp. nov. A key to the 17 species of the genus Hybos from Northwest China is provided. Copyright © 2014 Magnolia Press. Source


Wang M.,CAS Institute of Vertebrate Paleontology and Paleoanthropology | Liu D.,Beijing Museum of Natural History
Journal of Systematic Palaeontology | Year: 2015

A complete redescription of Cathayornis caudatus Hou, 1997 is provided based on new information from a resin cast of the holotype, leading to reinterpretation of many morphological features of this initially poorly diagnosed taxon. Detailed comparisons across various specimens referred to Cathayornithidae Zhou et al., 1992 indicate that Sinornis santensis, Cathayornis yandica, C. caudatus and Eocathayornis walkeri are valid taxa, but that C. chabuensis should be regarded as a nomen dubium. The holotype and referred specimens of C. chabuensis differ significantly in morphology, indicating that they do not belong to the same species. A comprehensive phylogenetic analysis targeted at Mesozoic birds reveals that neither Cathayornithidae Zhou et al., 1992 nor Cathayornis Zhou et al., 1992 are monophyletic, and that C. yandica can be regarded as the only species in a monospecific Cathayornithidae. The holotype of ‘C. caudatus’ is assigned to the genus Houornis gen. nov., and a taxonomic reassessment of other ‘cathayornithids’ is presented.http://zoobank.org/urn:lsid:zoobank.org:pub:0B1A404A-CC6A-4609-8CC5-C0DD62983C9A © The Trustees of the Natural History Museum, London 2015. All Rights Reserved. Source


Zhang Z.,Geological Museum of China | Schneider J.W.,TU Bergakademie Freiberg | Hong Y.,Beijing Museum of Natural History
Journal of Systematic Palaeontology | Year: 2013

The most ancient known roach, Qilianiblatta namurensis gen. et sp. nov. from the earliest Pennsylvanian (Namurian B/C) Qilianshan entomofauna, is described from material excavated in the Qilianshan Mountains of north-western China. The new genus is characterized by a mosaic of plesiomorphic and apomorphic features typical of various Euramerican and Angaran Late Palaeozoic blattid genera. Despite a limited time gap between the age of Q. namurensis and that of the previously known oldest blattids (archimylacrids of Westphalian A age, 1-2 Ma younger), the pattern of main veins and cross venation of Q. namurensis appears in some regards more advanced. This is particularly apparent in the only weakly expressed primary dichotomy of main veins and the relatively modern aspect of the cross venation. The new taxon raises questions regarding the polyphyletic origin of the 'phyloblattoid' groundplan, namely once in the Euramerican biotic province at the end of the Westphalian and stemming from archimylacrids, and earlier in the Cathaysian (-Angaran?) biotic province from forms like Qilianiblatta. Forewings of Q. namurensis are clearly protective wings (tegmina) and probably were not involved directly in the production of lift during flight. These wings are considerably advanced relative to the earliest diversification of the winged insects and the general groundplan for hexapodan wings. It is possible that winged blattids appeared as early as the Devonian. © 2013 Natural History Museum. Source


Huang M.-R.,Beijing Museum of Natural History
Acta Oecologica | Year: 2010

Based on herbarium collections, the altitudinal distribution patterns of six species of the lichen genus Stereocaulon in China were analyzed. Species are elevation-dependent: normal distributions and corresponding empirical formulae were detected for the genus and S. japonicum and S. paschale, the species distributed in low elevation areas, and log-normal distributions detected for S. sorediiferum and S. tomentosum, the species in medium elevation areas, while S. pomiferum and S. myriocarpum, the species in high elevation areas, appear to be irregularly distributed according to altitude. Such formulae should prove valuable for biological conservation practices. © 2009 Elsevier Masson SAS. All rights reserved. Source


Zhang J.-Y.,CAS Institute of Vertebrate Paleontology and Paleoanthropology | Li J.-J.,Beijing Museum of Natural History
Neues Jahrbuch fur Geologie und Palaontologie - Abhandlungen | Year: 2010

Anosteira is a carettochelytid turtle known from the Eocene of Asia and North America and includes several species. The species A. maomingensis CHOW & LIU, 1953 was established originally on the basis of two internal molds. The present study is based on new specimens collected by the IVPP in Maoming during 2005-2006 and unpublished specimens housed in the Beijing Museum of Natural History, which include more than twenty shells and a lower jaw. A. maomingensis is characterized by its large size, absence of all marginal scutes and reduced pleural scutes, which do not cover the lateral part of the costal plates. The lower jaw has a wide, posteriorly expanded and concave triturating surface, a strong and tall coronoid process lying on the middle of the jaw ramus and deeply excavated lateral surface under the coronoid process. © 2010 Schweizerbart'sche Verlagsbuchhandlung, Stuttgart, Germany. Source

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