1. These organisms were previously classified as a primitive subkingdom of the plant kingdom, the thallophytes thallophyte, common name for members of the Thallophyta (or Thallobionta), a taxonomic group in some archaic classification systems that comprised Algae, fungi, and lichens.

2. Boring thallophytes, probably fungi, possibly algae, were the cause of at least some skeletal micritization in Devonian reef complexes in western Canada.

3. ‘A sudden change of the dominant algae population from Cyanophytes to dinoflagellates occurred in 1977-1978.’ More example sentences ‘The dark phosphate bed of Weng'an contains a well-preserved, diverse floral assemblage including multicellular thallophytes, acritarchs, and Cyanophytes.’