Talk:Gastropod shell

Calcium source?
I understand that marine snails get most of their calcium carbonate from the seawater, but what about freshwater and terrestrial snails? Is there a significant difference in the amount they're able to obtain, and does it lead to a weaker shell? 66.31.37.172 (talk) 21:45, 19 February 2012 (UTC)

Burch 1962
Hi 14.139.123.36: I don't know about this edit. It's not really an advertisement as it is a recommendation for the reader to look at a free source. Either way I've reinstated the ref, at least, as it probably is the source for the rest of the preceding paragraph. Invasive Spices (talk) 16:27, 9 October 2021 (UTC)