Topic summary
Basal group

Extracted from the Wikipedia article Basal (phylogenetics).
Usage
A basal group in the stricter sense forms a sister group to the rest of the larger clade, as in the following case:
Topic summary

Extracted from the Wikipedia article Basal (phylogenetics).
A basal group in the stricter sense forms a sister group to the rest of the larger clade, as in the following case: