Description: English: Plate 42. Oliva Braziliana. Brazilian Olive. Modern accepted name (2012) is Olivancillaria urceus[1]. Date: January 1820. Source: Zoological Illustrations, Volume I. Author: William Swainson, F.R.S., F.L.S.
Description: English: Effects of acidic vapors on mollusk shells. The efflorecence is clearly visible in both specimens. To the right, an affected shell of Olivancillaria urceus (marine snail); To the left an affected shell of Corbicula fluminea (freshwater bivalve). Both were exposed to an excessively humid and acidic medium (acetic acid) for some weeks. Date: 17 June 2009. Source: Own work Cropped and levels automatically adjusted. Author: Daniel Cavallari.