Calolithus speetonensis Black, 1971c
Black, M. 1971c. The systematics of coccoliths in relation to the paleontological record. In: Funnell, B. M. & Riedel, W. R. (Eds), The Micropaleontology of the Oceans. Cambridge University Press, Cambridge. 611-624.
Calolithus speetonensis
Black, 1971c
Albian
Speeton Clay at Speeton, England