Freshly expired (in 2008). Could have housed a single living animal for over 500 years.
I have done some work on the shells, which show annual growth rings. Picture two shows a section of a 105mm half-shell. It is enlargeable and the annual growth lines can be counted.
Originally posted in iSpot
Known to the Sheltie folks as Tammy Norrie.
Abundant in small area. Around 40 flowering plants.
Found growing on side of road.
Sunbathing on a pile of logs