https://jnas.nbuv.gov.ua/article/UJRN-0000755380
Calcareous nannoplankton of Callovian of Ukraine / Matveev, A. V., Bondarev, D. S. (2013)
calcareous nannoplanktoncallovianukrainematveevbondarev
https://wiredspace.wits.ac.za/items/ae1e6623-e34a-4129-abad-8f71bbee56bc
Upper Cretaceous calcareous nannoplankton from Zululand, South Africa
A detailed account of the calcareous nannoplankton occurring in the Upper Cretaceous System of Zululand (Northern Natal) is reported. A total of 58 species are...
upper cretaceouscalcareous nannoplanktonsouth africazululand