@article{NARMS:SourceID:167331, author = {Janssen, A. W.}, journal = {Cainozoic Research}, pages = {163-170}, title = {Notes on the systematics, morphology and biostratigraphy of fossil holoplanktonic Mollusca, 13. Considerations on a subdivision of Thecosomata, with the emphasis on genus group classification of Limacinidae.}, url = {https://natuurtijdschriften.nl/pub/541695}, volume = {2}, year = {2003} }