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Horologinella

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Age range (in million years)

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Image	Name	Original Description
	*wicanderi*	Martin, F. (1984)
	*tenuissima*	He Chengquan (1991)
	spinosigibberosa	Brideaux, W.W. and Fisher, M.J. (1976)
	spinosa	Cookson, I.C. (1965a)
	sichuanensis	Zhang Lujin (1984)
	*scabrosa*	He Chengquan (1984b)
	quadrispina	Jardiné, S., Combaz, A., Magloire, L., Peniguel, G. and Vachey, G. (1972)
	*pentagonalis*	Heilmann-Clausen, C. and Van Simaeys, S., (2005)
	*obliqua*	Cookson, I.C. and Eisenack, A. (1962a)
	minuta	Liu Zhili, Liu Xuexian and Zheng Yuefang, (1992)
	*micirugis*	He Chengquan (1984b)
	magnusa	Liu Zhili, Liu Xuexian and Zheng Yuefang, (1992)
	*lineata*	Cookson, I.C. and Eisenack, A. (1962a)
	incurvata	Cookson, I.C. and Eisenack, A. (1962a)
	horologia	Staplin, F.L. (1960)
	extrema	Cookson, I.C. and Eisenack, A. (1962a)
	eclipsiana	Riding, J.B. and Helby, R. (2001e)
	*disparilis*	He Chengquan (1984b)
	dawanensis	Liu Zhili, Liu Xuexian and Zheng Yuefang, (1992)
	*corrugata*	De Coninck, J. (1986b)
	*coninckii*	Slimani, H. (1994)
	biconvexa ssp. laevigata	Liu Zhili, Liu Xuexian and Zheng Yuefang, (1992)
	biconvexa ssp. granulata	Liu Zhili, Liu Xuexian and Zheng Yuefang, (1992)
	biconvexa ssp. biconvexa	Jiabo (1978)
	biconvexa	Jiabo (1978)
	apiculata	Cookson, I.C. and Eisenack, A. (1962a)
	*angulata*	De Coninck, J. (1985)
	*anabarensis*	Pestchevitskaya, E.B. (2001)