Cornwall, U.K. 1984. Part of perinotum covering the girdle dorsally, magnified X550 by scanning electron microscope. Specimen RMNH.MOL.HLS.1197 coll. Naturalis, Leiden, Netherlands. Image provided by J. D. Sigwart.
Scale line 0.02 mm. Frame width 0.24 mm.

The girdle is tough thick tissue that surrounds the valves of chitons. In Acanthochitona crinita the dorsal aspect of the girdle (perinotum) is covered with unaligned, short, straight spines that are spatulate and slightly ribbed distally, with some longer curved spines [not shown on image] .

KEY ID FEATURES and similar species at: 01 Acanthochitona crinita