记述了产于宁夏中卫县石炭纪纳缪尔期地层的古鳕类化石一新属新种——潘氏黄河鳕(huanghelepis pani gen.et sp.nov.)。新属种的个体中等大小,体形狭长,头长约为体长的1/6左右。颌悬挂很倾斜,具有长而窄的梯形鳃盖骨、相对较大的下鳃盖...记述了产于宁夏中卫县石炭纪纳缪尔期地层的古鳕类化石一新属新种——潘氏黄河鳕(huanghelepis pani gen.et sp.nov.)。新属种的个体中等大小,体形狭长,头长约为体长的1/6左右。颌悬挂很倾斜,具有长而窄的梯形鳃盖骨、相对较大的下鳃盖骨。全身覆鳞,体侧各有一列高度远大于宽度的长方形侧线鳞。这是在中国石炭纪地层中古鳕类化石的首次描述。展开更多
During the Upper Carboniferous, orthopteran insects （grasshoppers, katydids, and crickets） were represented by numerous species distantly related to crown-orthopterans, such as lobeattid and cnemidolestodean insects...During the Upper Carboniferous, orthopteran insects （grasshoppers, katydids, and crickets） were represented by numerous species distantly related to crown-orthopterans, such as lobeattid and cnemidolestodean insects. The panorthopterans, including total- orthopterans and their closest relatives, are represented by comparatively rarer species in localities of this period. Here we describe Heterologus duyiwuer sp. nov., an infrequent panorthopteran from the Late Carboniferous locality of Xiaheyan Village （Zhongwei City, Ningxia Hui Autonomous Region, China）. The only available specimen is composed of an isolated forewing exhibiting a combination of character states previously unknown, in particular the lack of posterior radius （RP） / anterior Media （MA） connection, late branchings of the media （M） and anterior cubitus （CuA）, and a branched posterior branch of the posterior cubitus （CuPb）. Based on its unusual branching pattern, the composite stem resulting from the fusion of CuA and CuPaa （second anterior branch of CuP） is assumed to be composed of a branched CuA and a simple CuPaa.展开更多
Studies demonstrate that the Chouniukou Formation of the Qilian Mountains represents a lithostratigraphical unit across series, with its lower part belonging to the Middle-Late Visean, middle part to E-zone of the Ear...Studies demonstrate that the Chouniukou Formation of the Qilian Mountains represents a lithostratigraphical unit across series, with its lower part belonging to the Middle-Late Visean, middle part to E-zone of the Early Namunan, and upper part to the Middle-Late Namurian. The Mid-Carboniferous boundary passes through the bedding plane between the middle and upper parts of this formation.展开更多
文摘记述了产于宁夏中卫县石炭纪纳缪尔期地层的古鳕类化石一新属新种——潘氏黄河鳕(huanghelepis pani gen.et sp.nov.)。新属种的个体中等大小,体形狭长,头长约为体长的1/6左右。颌悬挂很倾斜,具有长而窄的梯形鳃盖骨、相对较大的下鳃盖骨。全身覆鳞,体侧各有一列高度远大于宽度的长方形侧线鳞。这是在中国石炭纪地层中古鳕类化石的首次描述。
文摘During the Upper Carboniferous, orthopteran insects （grasshoppers, katydids, and crickets） were represented by numerous species distantly related to crown-orthopterans, such as lobeattid and cnemidolestodean insects. The panorthopterans, including total- orthopterans and their closest relatives, are represented by comparatively rarer species in localities of this period. Here we describe Heterologus duyiwuer sp. nov., an infrequent panorthopteran from the Late Carboniferous locality of Xiaheyan Village （Zhongwei City, Ningxia Hui Autonomous Region, China）. The only available specimen is composed of an isolated forewing exhibiting a combination of character states previously unknown, in particular the lack of posterior radius （RP） / anterior Media （MA） connection, late branchings of the media （M） and anterior cubitus （CuA）, and a branched posterior branch of the posterior cubitus （CuPb）. Based on its unusual branching pattern, the composite stem resulting from the fusion of CuA and CuPaa （second anterior branch of CuP） is assumed to be composed of a branched CuA and a simple CuPaa.
基金Project supported by the National Natural Science Foundation of China.
文摘Studies demonstrate that the Chouniukou Formation of the Qilian Mountains represents a lithostratigraphical unit across series, with its lower part belonging to the Middle-Late Visean, middle part to E-zone of the Early Namunan, and upper part to the Middle-Late Namurian. The Mid-Carboniferous boundary passes through the bedding plane between the middle and upper parts of this formation.
