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Prolixosphaeridium

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Age range (in million years)

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Image	Name	Original Description
	*anasillum*	Erkmen, U. and Sarjeant, W.A.S. (1980)
	*apiculatum*	Beju, D. (1978)
	*basifurcatum*	Dodekova, L. (1969)
	*capitatum*	Cookson, I.C. and Eisenack, A. (1960b)
	*conulum*	Davey, R.J. (1969a)
	*deirense*	Davey, R.J., Downie, C., Sarjeant, W.A.S. and Williams, G.L. (1966)
	*elongatum*	Jain, K.P. (1977b)
	*floccus*	Stancliffe, R.P.W. (1991)
	*foratum*	Dodekova, L. (1994)
	*granulosum*	Deflandre, G. (1937b)
	*inequiornatum*	Stover, L.E. and Helby, R. (1987c)
	*mixtispinosum*	Klement, K.W. (1960)
	*nanus*	Wetzel, O. (1933b)
	*parvispinum*	Deflandre, G. (1937b)
	*parvispinum ssp. deirense*	Davey, R.J., Downie, C., Sarjeant, W.A.S. and Williams, G.L. (1966)
	parvispinum ssp. parvispinum	Davey, R.J., Downie, C., Sarjeant, W.A.S. and Williams, G.L. (1969)
	*perforospineum*	Dodekova, L. (1994)
	*spissum*	McIntyre, D.J. and Brideaux, W.W. (1980)
	*toryna*	Cookson, I.C. and Eisenack, A. (1960b)
	*xanthiopyxides*	Wetzel, O. (1933b)