Unidentified microscopic zooplankton of the HMS 'Challenger' expedition, 1873. In collaboration with the British Museum of Natural History

Species shown are representative Formanifera, possible genus Cibicidodes and Crustacea; planktonic Copepods and Isopods.
Possible prehistoric origin; provenance unknown. These are to be the first published illustrations of specimens analysed by microscope and separated from particles taken from a sea-bed fauna bearing ecosystem of the North Atlantic.