Type a12/b1,2,3
A dome-shaped form without a pedicle or base.
List of Tofino Basin subtypes a12/b1,2,3
a12/b1/c3/d0/e0/f0
undescribed ichthyolith oddity, Form C ("globular dome")
a12/b1,2,3/c3/d1/e2/f3
undescribed ichthyolith oddity, Form D
a12/b3/c1/d1/e1,3/f≤5
undescribed ichthyolith oddity, Form E
a12/b10
undescribed ichthyolith oddity, Form F
Type a12/b1,2,3
A dome-shaped form without a pedicle.
|
c. Nature of crown |
|
|
|
0. |
none of the following 19
|
|
|
|
1. |
pointed 19
|
 |
|
|
2. |
flat 19
|
 |
|
|
3. |
rounded 32
|
 |
|
d. Nature of crown keels, ridges, or lines 19
|
|
|
|
0. |
absent or none of the following 32
|
|
|
|
1. |
smooth 19
|
 |
|
|
2. |
toothed or serrated 19, 32
|
 |
|
e. Length of crown keels, ridges, or lines 32
|
|
|
|
0. |
absent or none of the following 32
|
|
|
|
1. |
all long: extend from crown base to apex 32
|
 |
|
|
2. |
all short: do not extend from crown base to apex 32
|
 |
|
|
3. |
mixed (mixed short and long) 32
|
 |
|
f. Number of crown keels, ridges, or lines 32
|
|
|
|
|
Recorded as numbers 32
|
|
