Eiffellithus Reinhardt, 1965
Loxolith has non-birefringent outer wall, birefringent inner wall and a central area spanned by a crossbar
Reinhardt, P., (1965): Neue Familien für fossile Kalkflagellaten (Coccolithophoriden, Coccolithineen). - Monatsberichte der Deutschen Akademie der Wissenschaften zu Berlin. 7: 30-40.