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云南禄丰兽孔类一新属

1976年 第14卷 第2期: 85~90

发表日期:2009-05-05李志恒来源:放大 缩小

编辑:崔贵海

摘要:Recently some new materials were rediscovered at the famous localities of Lufeng, Yunnan.  One specimen from dark-red beds of lower Lufeng formation, after painstaking preparation, reveals a delicate skull representing a new genus and species of Tritylodontidae, named here as Yunnania brevirostre gen. et sp. nov.
    The new form is characterized by its rather small size, well-developed sagittal crest, exceedingly weak fugal arches, with only two pairs of incisors, the anterior pair being much larger than the posterior one, and five cheek teeth with two outer, three middle and two inner cusps.
Owing to the fact that the new genus approximates most of the later forms of that family in characters, its age has better to be considered as early Jurassic. This seems to be in favor of the view held by most of the Chinese geologists and paleontologists who have worked in this district in recent years.

卷期:14卷 02期 

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