Most of these insights resulted from molecular
phylogenies of the nuclear-encoded 18S
rRNA gene. Nowadays, thousands of 18S rDNA
sequences from all taxonomic groups of the green
algae are available - except for the Pedinophyceae.
Only a single molecular phylogenetic
study specifically addressed the relation between
the Pedinophyceae and prasinophytes, using rbcL
sequences of two pedinophytes (Pedinomonas