c. crown ornamentation ³¹

0.

indeterminate or none ^{9, 19, 31, 32}

1.

lines or ridges, parallel or approximately parallel ³¹

2.

lines or ridges radiate from a margin ^{31, 32}

3.

lines or ridges extend longitudinally along shoulders, may be networked ^{31, 32}

4.

lines or ridges radiate from crown central region ³²

5.

median line or ridge ³²

6.

irregular lines or ridges ³²

7.

pitted or pores ³²

8.

stippled or nodular ³²