Prinsius taganus
Coccolithus taganus Fonseca, 1976
The holotype represents a reworked specimen that was redeposited into Early Miocene sediments.
A small (<3.0 µm) morphological variation of Prinsius martinii, characterised by double tube cycles, was mistakenly assigned to Praeprinsius dimorphosus with a single tube cycle (e.g., Bown et al., 2023), thereby contributing to taxonomic ambiguity.
This form was also erroneously assigned to Reticulofenestra by Pujos (1985) and to Dictyococcites by de Kaenel in de Kaenel & Londeix (2014).
Bown, P. R., Kim, H. & Gibbs, S. J. 2023. Danian calcareous nannofossil evolution and taxonomy with focus on sites from the North Atlantic Ocean (IODP Expedition 342, Sites U1403 and U1407). Journal of Nannoplankton Research. 41(2): 110-157
de Kaenel, E. & Londeix, L. 2014. Données nouvelles sur la nannoflore de l’Aquitanien stratotypique. In: Londeix, L. (Ed.) Stratotype Aquitanien. Collection Patrimoine géologique, Muséum national d’Histoire naturelle, Paris. 5: 261-267.
Fonseca, B. 1976. Coccolithus taganus, nouvelle espece de Coccolithopohride du Miocene de Lisbonne. Boletim de Sociedade Geologica de Portugal 20: 29-32.
Pujos, A. 1985. Cenozoic nannofossils, central equatorial Pacific, Deep Sea Drilling Project Leg 85. Initial Reports of the Deep Sea Drilling Project. 85: 581-607.
Holotype
Coccolithus taganus
Fonseca, 1976
Early Miocene
Palenca (section B) left bank of the Tagus, Portugal