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Pseudoceratium

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Age range (in million years)

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Image	Name	Original Description
	*almohadense*	Below, R. (1984)
	*aulaeum*	Harding, I.C. (1990b)
	*australiense*	Riding, J.B. and Helby, R. (2001g)
	*brevicornutum*	Herngreen, G.F.W., Kerstholt, S.J. and Munsterman, D.K. (2000)
	*distinctum*	Duxbury, S. (2001)
	*eisenackii*	Davey, R.J. (1969a)
	*eopelliferum*	Herngreen, G.F.W., Hartkopf-Fr÷der, C. and Ruegg, G.H.J. (1994)
	*expolitum*	Brideaux, W.W. (1971)
	*gochtii*	Neale, J.W. and Sarjeant, W.A.S. (1962)
	*iehiense*	Helby, R. (1987)
	*interiorense*	Bint, A.N. (1986)
	*iveri*	Nøhr Hansen, H. (1993a)
	*parvum*	Michael, E. (1964)
	*pelliferum*	Gocht, H. (1957)
	*retusum*	Brideaux, W.W. (1977)
	*robustum*	Michael, E. (1964)
	*robustum riding and helby 2001g*	Riding, J.B. and Helby, R. (2001g)
	*securigerum*	Davey, R.J. and Verdier, J.-P. (1974)
	*solocispinum*	Davey, R.J. (1974)
	*spitiense*	Jain, K.P., Garg, R., Kumar, S. and Singh, I.B. (1984)
	*toveae*	Nøhr Hansen, H. (1993a)
	*weymouthense*	Helby, R. (1987)