TABLE 3. Assessment of measurement error. For each taxon, one right and one left suture (two rights for Somoholites) were re-digitized and rescaled five times; the individual lengths and the area spanned by the five replicates were then determined. The 95% confidence interval (CI) for the lengths was calculated from the standard deviation of the five replicate lengths (tc=2.776, df=4). The area spanned by the replicates can be used as an estimate of measurement error for reported areas.
Taxon |
Side |
95% CI for lengths |
Area spanned by replicates |
|
C. springeri |
Right |
0.34 |
0.62 |
|
C. springeri |
Left |
0.61 |
1.85 |
|
N. muelleri |
Right |
0.04 |
0.004 |
|
N. muelleri |
Left |
0.03 |
0.007 |
|
M. subdivisum |
Right |
0.02 |
0.017 |
|
M. subdivisum |
Left |
0.01 |
0.02 |
|
Somoholites beluensis |
Right |
0.01 |
0.027 |
|
Somoholites deroeveri |
Right |
0.01 |
0.038 |