Language: Chinese with English summary
ISBN/ISSN: 7894900532
Published on: 2005-01
Hardcover
Summary
The “Huaian Formation” in the basin of the Northern Jiangsu is a series of terrestrial sediments.
The Lythraipolles appeared and adapted itself to environment in the original cycle and the early the middle development cycle. During the late development cycle and the prosperous cycle, the Lythraipolles evolved towards specialization. The specialization produced many species of specialization. Specialization is highly adapted to narrow biological environment. A slightly change of environment forced these species of specialization to die. During the early senesecence cycle. Rare species such as the Lythraitas dilutus, L. triangulates and L. giganteus became relict species. These relict species grew in the later age. For example, the Lythraites giganteus appeared at the Furao, Helongjiang, during Maestrichtian.
In this paper, 2 new genea, 1 genus of emendation and 47 species are described in the text in Chinese, among 2 new genera (Huaianipollis gen. nov. and Triphyllopollis gen. nov.), 1 genus of emendation [Lythraites(Yu, Guo et Mao, 1983) emend.] and 38 new species are described in English.
