| Variables | t | df | p-value |
---|---|---|---|---|
Amphibia | Tamura-Nei nucleotide distances | 17.4 | 3 | 0.0004137* |
 | Number of variable sites | 3.4447 | 3 | 0.04110* |
Aves | Tamura-Nei nucleotide distances | 5.7446 | 3 | 0.01048* |
 | Number of variable sites | 3.1192 | 3 | 0.05251 |
Crocodylia | Tamura-Nei nucleotide distances | - | - | - |
 | Number of variable sites | 5.1962 | 3 | 0.01385* |
Lepidosauria | Tamura-Nei nucleotide distances | 4.8414 | 3 | 0.01681* |
 | Number of variable sites | 3.1114 | 3 | 0.05283 |
Mammalia | Tamura-Nei nucleotide distances | 6.6541 | 3 | 0.006918* |
 | Number of variable sites | 2.9613 | 3 | 0.05948 |
Testudines | Tamura-Nei nucleotide distances | 9 | 3 | 0.002896 |
 | Number of variable sites | 2.5062 | 3 | 0.08723 |