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This paper comprises results of the systematic investigation of the large
collection of kannemeyerid materials discovered from various localities
in Shansi Province during the field seasons of 1955, 1956, 1958 and 1959.
Two genera and five species including three new ones are described. On
the basis of morphological study and their comparison with the other known
genera of the group, the conclusion is arrived at that the two Chinese
genera of kannemeyerids have the closest phylogenetic relationship with
the south African genus Kannemeyeria.
Among the evolutional trends shown in the dicynodonts, it is found that
the two known Chinese genera of small dicynodonts, that is, Dicynodon
sinkianensis and Shansiodon, possess certain advanced features characteristic
of the kannemeyerids. Therefore, Shansiodon has to be grouped with the
Kannemeyeriidae, and Dicynodon sinkianensis, while it may be retained
within the Dicynodontidae, has to be considered as distinct generically
and the name Jimusaria is proposed.
According to the evolutional level reached by the Chinese kannemeyerids
and the analysis of the composition of the fauna, the geological age of
fossil horizon of upper Er-Ma-Ying formation is late early Triassic to
early middle Triassic.
Contents
1. Abstract
2. Preface
3. Materials
4. Systematic Description
(1) Sinokannemeyeria Young
(2) Parakannemeyeria Sun
(3) Materials of uncertain specific affinity
5. Morphological comparison
6. Discussion on some phyletic problems of Chinese kannemeyerids and
other genera
7. Geological horizon and age of the Chinese kannemeyerids
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