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Surculosphaeridium

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Age range (in million years)

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Image	Name	Original Description
	*alagoense*	Regali, M.S.P., Uesugui, N. and Santos, Y.S. (1974)
	*argentinense*	Pöthe de Baldis, E.D. (1986)
	*basifurcatum*	Yun Hyesu (1981)
	*belowii*	Yun Hyesu (1981)
	*calcigerum*	De Coninck, J. (1986b)
	*cassospinum*	Yun Hyesu (1981)
	*cribrotubiferum*	Sarjeant, W.A.S. (1960a)
	*cribrotubiferum ssp. cribrotubiferum*	Sarjeant, W.A.S. (1960a)
	*cribrotubiferum ssp. granulosum*	Jain, K.P. (1977b)
	*divarispinosum*	Jain, K.P. (1977b)
	*granulatum*	Wetzel, W. (1952)
	granulosum	Jain, K.P. (1977b)
	*longifurcatum*	Firtion, F. (1952)
	*oceaniae*	De Coninck, J. (1969)
	phoenix	()
	phoenix ssp. phoenix	Duxbury, S. (1980)
	phoenix ssp. stella	Wetzel, W. (1952)
	polyozum	Brosius, M. (1963)
	*scissospinum*	Yun Hyesu (1981)
	*spinicongregatum*	Yun Hyesu (1981)
	*stella*	Wetzel, W. (1952)
	*suggestium*	McMinn, A. (1988)
	*trunculum*	Davey, R.J. (1979b)
	*vestitum*	Deflandre, G. (1939a)