In the University Library of the Ruprecht-Karls-Universität in Heidelberg a muscript can be found, entitle ‘Das Buch der Natur’ [Book of Nature] by Konrad von Megenburg. It was made in Strasbourg; the illuminations probably originated in Haguenau (now in France, Dept. Bas-Rhin) in the studio of Diebold Lauber ca. 1442–1448(?) .
The manuscript describes all areas of Creation. On f. 231v we see a man standing at a stream, in the background a church on a hill. In the middle right nine shells are figured, of which one with a humanised-faced snail. All is very sketchy, the snails heavily stylised. Four shells are clearly left-coiled, three right-coiled; two are indifferent.