Table 3 The correlations between the index of sutural complexity (ISC) and shell morphology (B/H, STcenter and STneck)
| Â | Shell diameter (mm) | B/H | STcenter | STneck |
|---|---|---|---|---|
D. latidorsatum forma complanata | ||||
|  | 15 | −0.238 (13) | 0.244 (13) | −0.414 (13) |
|  | 20 | −0.500* (14) | 0.033 (14) | −0.114 (14) |
|  | 25 | −0.436* (18) | 0.015 (18) | −0.054 (18) |
|  | 30 | −0.613** (15) | 0.015 (15) | −0.418 (14) |
D. latidorsatum forma media | ||||
|  | 15 | 0.028 (37) | 0.266 (37) | −0.101 (37) |
|  | 20 | −0.054 (52) | 0.116 (52) | −0.393** (52) |
|  | 25 | 0.045 (56) | 0.114 (56) | −0.064 (56) |
|  | 30 | 0.023 (37) | 0.037 (36) | −0.112 (36) |
D. latidorsatum forma inflata | ||||
|  | 15 | 0.958** (5) | 0.315 (4) | −0.891* (4) |
|  | 20 | 0.816* (5) | −0.426 (5) | −0.119 (5) |
|  | 25 | 0.822* (5) | −0.213 (5) | 0.603 (5) |
| Â | 30 | 0.882** (5) | 0.717 (4) | 0.405 (4) |