Zygolithus erectus Deflandre in Deflandre & Fert, 1954
The loxolith calcareous nannofossils consist of a single wall and a central area with a bar that supports a distal process. The genus Zeugrhabdotus can be distinguished from Glaukolithus by the presence of this distal process.
Deflandre, G. & Fert, C. 1954. Observations on current and fossil coccolithophorids in ordinary and electron microscopy. Annales de Paléontologie 40: 115-176.
Reinhardt, P. 1965. Neue Familien für fossile Kalkflagellaten (Coccolithophoriden, Coccolithineen). Monatsberichte der Deutschen Akademie der Wissenschaften zu Berlin. 7: 30-40.