The nannofossil collections housed by the Museum are particularly important for ocean acidification studies. They contain both fossil and modern coccolithophores.
The museum's nannofossil collections are primarily image catalogues of key species. The catalogue includes tens of thousands of scanning electron microscope images, a mixture of:
We also hold a microfossil reference collection of nannofossils for the Ocean Drilling Programme, a key resource for coccolithophore research.
This contains approximately 5,000 slides covering the range of sediments recovered by the Deep Sea Drilling Project (DSDP) and Ocean Drilling Project (ODP).
The former British Petroleum collection includes around 78,000 palynological slides from 3,800 wells and outcrops worldwide. A Google Earth layer locating all well locations for the collection is available.