Plate 1
(The figures are not drawn to scale)
Fig. 1 Composite diagram of a chiton showing the parts of the shell and types of ornament.
Fig. 2 Median valve of Ischnochiton (after Suter).
Fig. 3 Median valve of Acanthochiton (after Suter).
Fig. 4 Exterior view of anterior, median and posterior valves to show main features.
Fig. 5 Interior view of anterior, median and posterior valves to show main features.
Fig. 6 Anterior and posterior valves of Guildingia obtecta (after Iredale and Hull).
Fig. 7 Lateral view of anterior valve of Aulacochiton haurakiensis.
Abbreviations: A. articulamentum; AV. anterior valve; CP. corneous processes; IP. insertion plates; J. jugum; LA. lateral area; M. mucro; PA. pleural area; PL. pleuro-lateral area; PV. posterior valve; S. spicules; SC. scales; SI. sinus; SL. sutural lamina; T. teeth; TE. tegmentum.