I remember getting the impression-from an old paper that I once read-that
recording of radula traces of land snails was something that was frequently
done early in the 20th century, especially in England. Check out the
following paper. It may have relevant references & it gives some info on
what the snails eat.

Boycott, Habitats of land mollusca in Britain, Journal of Ecology 22:1-38,
1934

Aydin

>-----Original Message-----
>From: Andrew K. Rindsberg [mailto:[log in to unmask]]
>Sent: Monday, November 20, 2000 17:36
>To: [log in to unmask]
>Subject: FW: radulation traces
>
>
>Ricardo Melchor posted this request on the Skolithos
>listserver, which is
>for ichnologists. I'll be happy to relay your answers to him.
>
>Andrew K. Rindsberg
>Geological Survey of Alabama
>+++++++++++++++++
>
>Dear ichnofriends:
>I found some time ago in the back yard of my home some
>interesting triangle
>shaped traces (about 1 mm wide) arranged in a meandering
>pattern. They are
>scraped on an algae-moss mat developed on unused roof tiles.
>
>I suspect that these traces are radulation traces of garden
>snails, which
>are fairly abundant in my back yard. Unfortunately, I could
>not caught any
>of them feeding on these mats.
>
>I am looking for bibliography on these kind of traces, feeding
>habits of
>land snails, etc. and also on radulation traces in general.
>
>Anybody is aware of this kind of traces by land gastropods in
>the fossil
>record?
>
>Any information will be welcomed!
>
>Regards,
>
>Ricardo Néstor MELCHOR
>Universidad Nacional de La Pampa
>Av. Uruguay 151, 6300 Santa Rosa
>La Pampa, Argentina
>