A delightful open access paper is:
De Winter, N.J., Vellekoop, J., Clark, A.J., Stassen,
P., Speijer, R.P. and Claeys, P., 2020. The giant
marine gastropod Campanile giganteum (Lamarck,
1804) as a high‐resolution archive of seasonality in
the Eocene greenhouse world. Geochemistry,
Geophysics, Geosystems, 21(4), p.e2019GC008794.
Researchgate PDF file
More Publications of Dr. Niels de Winter
Discovery and preparation of Campanile giganteum
from Lutetian of Fleury-la-Rivière (France) Fossil Forum
Yours,
Paul H.