xanthophyta in a sentence

1. Some phycologists classified them with the Xanthophyceae and the Eustigmatophyceae in the division Xanthophyta.
2. The majority of the lichens contain eukaryotic autotrophs belonging to the Chlorophyta ( green algae ) or to the Xanthophyta ( yellow-green algae ).
3. It's difficult to find xanthophyta in a sentence.