A second British fossil occurrence of the land snail Lyrodiscus (Family Zonitidae) from Sun Hole, Cheddar (UBSS Proceedings v.16(3))
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Ellis,C., 1983. A second British fossil occurrence of the land snail Lyrodiscus (Family Zonitidae) from Sun Hole, Cheddar.
UBSS Proceedings, 16(3) , pp 191-192 Download PDF.
Abstract: Analysis of sediment samples from Sun Hole Cave, Cheddar, has revealed the presence of the fossil land snail Retinella (Lyrodiscus) which is now extinct in Britain. Molluscs of the subgenus Lyrodiscus are presently restricted to the Canary Islands but were widespread in Europe in the late Pliocene and early Pleistocene.