The Tetraphytina (Cavalier-Smith 2008) or 'core Chlorophyta' are a proposed derived

Chlorophyta Chlorophyta or Prasinophyta is a taxon of green algae informally called chlorophytes. The name is used in two very different senses, so care is needed to determine the use by a particular author. In older classification systems, it refers to ...

clade. The basal Tetraphytina clades are the

Pedinophyceae Pedinophyceae is a class of green algae in the division Chlorophyta Chlorophyta or Prasinophyta is a taxon of green algae informally called chlorophytes. The name is used in two very different senses, so care is needed to determine the use ...

and the Chlorophytina. Below is a cladogram based on Leliaert et al.

References

{{Green algae-stub Chlorophyta