Paleolithic humans of present-day Spain may have eaten snails as much as 30,000 years ago, or 10,000 years earlier than inhabitants of Mediterranean regions, according to research by Javier Fernández-López de Pablo from Institut Català de Paleoecologia Humana i Evolució Social and colleagues.
The researchers discovered land snail shell remains dated to about 30,000 years ago at the site of Cova de la Barriada, Spain. Groupings of complete shells from a large land snail species were found in three areas of the site, corresponding to different time points. They studied these remains by investigating patterns indicating likley land snail selection, consumption, and accumulation at the site, and then analyzed the shells' decay, fossilization process, composition, and age at death by measuring the shell sizes.
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