Crux, J. A.; Hamilton, G. B.; Lord, A. R.; Taylor, R. J. (1982). Tortolithus gen. nov. Crux and new combinations of Mesozoic calcareous nannofossils from England. INA Newsletter. 4, 98-101.
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Crux, J. A.; Hamilton, G. B.; Lord, A. R.; Taylor, R. J.
1982
Tortolithus gen. nov. Crux and new combinations of Mesozoic calcareous nannofossils from England