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Tetrachacysta
General
Description
Stratigraphy
Literature
Notes
Species
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Age range (in million years)
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Name
Original Description
allenii
Backhouse, J. (1988)
amphidoxosum
Jiabo (1978)
baculata
Backhouse, J. (1988)
biconvexa
Jiabo (1978)
biconvexa ssp. biconvexa
Jiabo (1978)
biconvexa ssp. granulata
Liu Zhili, Liu Xuexian and Zheng Yuefang, (1992)
biconvexa ssp. laevigata
Liu Zhili, Liu Xuexian and Zheng Yuefang, (1992)
dawanensis
Liu Zhili, Liu Xuexian and Zheng Yuefang, (1992)
granulata
Jiabo (1978)
keenei
Marshall, N.G. (1989)
magnusa
Liu Zhili, Liu Xuexian and Zheng Yuefang, (1992)
minuta
Liu Zhili, Liu Xuexian and Zheng Yuefang, (1992)
multispinosa
Xu Jinli, Pan Zhaoren, Yang Yumei, Zhu Youhua and Fan Naimin, (1997)
parvita
Liu Zhili, Liu Xuexian and Zheng Yuefang, (1992)
spinosigibberosa
Brideaux, W.W. and Fisher, M.J. (1976)
spinulosa
Gao Ruiqi, He Chengquan and Qiao Xiuyun (1992)
tuberculata
Gao Ruiqi, He Chengquan and Qiao Xiuyun (1992)
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