Girdle tufts. Dorset, England. April 2017.
1: exposed part of girdle tuft.
2: packed ends of tuft spicules retaining shape of pocket in girdle where they are created.
3: thin tough cuticle that forms surface of perinotum (dorsal face of girdle).
4: tuft pocket in girdle (surface cuticle removed).
5: part of crescentic space left after a valve removed.

KEY ID FEATURES : 01 Acanthochitona fascicularis