Lophocyrtis (Cyclampterium) hadra |
| Riedel, W. R. and Sanfilippo, A., 1986a. Morphological characters for a natural classification of Cenozoic Radiolaria, reflecting phylogenies. Marine Micropaleontology, vol. 11, nos. 1-3, 151-170. |
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| Sanfilippo, A., 1990. Origin of the subgenera Cyclampterium, Paralampterium and Sciadiopeplus from Lophocyrtis [Lophocyrtis] [Radiolaria, Theoperidae]. Marine Micropaleontology, vol. 15, no. 3/4, 287-312. |
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