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中国肯氏兽-山西鳄组合带的新发现之一:山西的肯氏兽类

发表日期:2015-01-12来源:放大 缩小

编辑:刘  俊


摘要:近年来在山西省境内沿黄河一带采集到一些新的四足动物化石。在临县白道峪铜川组一段产出的化石中,至少有一种副肯氏兽和一种新的中国肯氏兽——白道峪中国肯氏兽(Sinokannemeyeria baidaoyuensis sp. nov.)。新种以其前额骨向前延伸到达鼻孔后凹一线的特征区别于其他中国肯氏兽。这一材料的长牙未被前颌骨完全包裹,可能是不正常发育所致。在柳林的二马营组地层中识别出不同于中国肯氏兽和副肯氏兽的第三个肯氏兽属。这些新发现增加了中国肯氏兽-山西鳄组合带的组分以及时代延限。
关键词:山西,中三叠统,二马营组,铜川组,中国肯氏兽,副肯氏兽

卷期:第53卷,第1期

 

New discoveries from the Sinokannemeyeria-Shansisuchus Assemblage Zone: 1. Kannemeyeriiformes from Shanxi, China

 

Liu Jun

 

Abstract  Recently, some new tetrapod fossils were collected along the Yellow River in Shanxi Province. From the Member I of the Tongchuan Formation at Baidaoyu in Linxian County, at least one species of Parakannemeyeria, and one new species of Sinokannemeyeria, S. baidaoyuensis, are identified. The new species is characterized by prefrontal anterior extension level to posterior margin of postnarial excavation. From the Ermaying Formation in Linxian County, a third kannemeyeriid genus is identified for the Sinokannemeyeria-Shansisuchus Assemblage. The new findings increase the content and time extension of the Sinokannemeyeria-Shansisuchus Assemblage.

        Key words  Shanxi, Middle Triassic, Ermaying Formation, Tongchuan Formation, Sinokannemeyeria, Parakannemeyeria

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