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Palaeohystrichophora

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Age range (in million years)

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Image	Name	Original Description
	*brevispinosa*	Pocock, S.A.J. (1962)
	*cheit*	Below, R. (1981a)
	*dispersa*	Cookson, I.C. and Eisenack, A. (1958)
	*elongata*	Vieira, M. and Mahdi, S. (2021)
	*granulata*	Mao Shaozhi and Norris, G. (1988)
	*infusorioides*	Deflandre, G. (1935)
	*isodiametrica*	Cookson, I.C. and Eisenack, A. (1958)
	*minuta*	Deflandre, G. and Cookson, I.C. (1955)
	*multispina*	Deflandre, G. and Cookson, I.C. (1955)
	*muriciformis*	Conrad, W. (1941)
	*myalupensis*	Churchill, D.M. and Sarjeant, W.A.S. (1962)
	*oblongata*	Jiabo (1978)
	*palaeoinfusa*	Fensome, R.A., Williams, G.L. and MacRae, R.A., (2009)
	*panshanensis*	Jiabo (1978)
	*paucisetosa*	Deflandre, G. (1943)
	*paucispina*	Alberti, G. (1961)
	*pellifera*	Cookson, I.C. and Eisenack, A. (1958)
	*pikeae*	Churchill, D.M. and Sarjeant, W.A.S. (1962)
	*spinosissima*	Deflandre, G. (1939a)