EARLY CRETACEOUS OSTRACODS FROM THE XIAGOU FORMATION, HUAHAI BASIN, GANSU, NW CHINA

The ostracods, collected for the first time from the Early Cretaceous Xiagou Formation at Jiedabangou, Huahai Basin, Gansu Province, have been systematically studied and described in this paper. There are 4 genera and 8 species. The Mesozoic sequence along the southern margin of the Huahai Basin also has been reconstructed according to the fossil association feature, lithologic and sedimentary characteristics, as well as structures of the section. From the fossil feature and the main strata from which the ostracods are collected, it can be deduced that the strata containing abundant ostracods and charophytes, which have been referred to Middle Late Jurassic, are the Xiagou Formation developed in Barremian of Early Cretaceous.

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Clc Number:

Q913.2 Q913.653