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Hystrichosphaera

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Age range (in million years)

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Image	Name	Original Description
	*bentorii var. truncata*	Rossignol, M. (1964)
	*cingulata var. granulata*	Clarke, R.F.A. and Verdier, J.P. (1967)
	*cingulata var. perforata*	Clarke, R.F.A. and Verdier, J.P. (1967)
	*cingulata var. polygonalis*	Clarke, R.F.A. and Verdier, J.P. (1967)
	*cornuta var. laevimura*	Davey, R.J. and Williams, G.L. (1966a)
	*furcata ssp. angusta*	Wetzel, W. (1952)
	*furcata var. membranacea*	Rossignol, M. (1964)
	*furcata var. multiplicata*	Rossignol, M. (1964)
	*furcata var. pachyderma*	Rossignol, M. (1964)
	*inconspincua*	Deflandre, G. (1935)
	*membranosa*	Archangelsky, S. (1969b)
	*pachydermum*	Vieira, M. et al. (2018)
	*pseudofurcata*	Klumpp, B. (1953)
	*pseudofurcata*	Varma, C.P. and Dangwal, A.K. (1964)
	*ramosa var. gracilis*	Davey, R.J. and Williams, G.L. (1966a)
	*ramosa var. granomembranacea*	Davey, R.J. and Williams, G.L. (1966a)
	*ramosa var. granosa*	Davey, R.J. and Williams, G.L. (1966a)
	*ramosa var. membranacea*	Rossignol, M. (1964)
	*ramosa var. multibrevis*	Davey, R.J. and Williams, G.L. (1966a)
	*ramosa var. multiplicata*	Rossignol, M. (1964)
	*ramosa var. pachyderma*	Rossignol, M. (1964)
	*ramosa var. reticulata*	Davey, R.J. and Williams, G.L. (1966a)
	*suppara*	Drugg, W.S. (1967)
	*tertiaria var. obliqua*	Wall, D. (1967)