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Litosphaeridium

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Age range (in million years)

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Image	Name	Original Description
	*adnatum*	Lucas-Clark-J. (2007)
	*arundum*	Eisenack, A. and Cookson, I. (1960)
	*bacar*	Lucas-Clark, J. (1984)
	*conispinum*	Davey, R.J. and Verdier, J.-P. (1973)
	*cooksoniae*	Singh, Ch. (1971)
	*crassipes*	Reade, J.B. (1839)
	*fenestreconum*	May, F.E. (1980)
	*flosculus*	Deflandre, G. (1937b)
	*fucosum*	Valensi, L. (1955a)
	*gaponoffiae*	Lucas-Clark-J. (2007)
	*luteticus*	Gruas-Cavagnetto, C. (1976)
	*mamellatum*	De Coninck, J. (1977)
	*oblongum*	Yu Jingxian and Zhang Wangping (1980)
	*parvum*	Matsuoka, K. and Bujak, J.P. (1988)
	*serratocyclum*	Wetzel, O. (1933b)
	*siphoniphorum*	Cookson, I.C. and Eisenack, A. (1958)
	*siphoniphorum ssp. glabrum*	Lucas-Clark, J. (1984)
	*striatoconus*	Deflandre, G. and Cookson, I.C. (1955)
	*truncigerum*	Deflandre, G. (1937b)