Scientists aim to describe a single 'tree of life' that reflects the evolutionary relationships of living things. However, evolutionary relationships are a matter of ongoing discovery, and there are different opinions about how living things should be grouped and named. EOL reflects these differences by supporting several different scientific 'classifications'. Some species have been named more than once. Such duplicates are listed under synonyms. EOL also provides support for common names which may vary across regions as well as languages.

Preferred marks the preferred classification for this taxon.

Recognized By Rank Classification
Integrated Taxonomic Information System (ITIS)
view in classification
EOL Group on Flickr Class
BioImages resource Phylum
Botany resource Phylum
BioImages resource Phylum
Biological Atlas of the Arctic Seas 2000
Paleobiology Database
view in classification
Unranked clade
Sloan-CoML NameLink Project
  • Chrysophyta
Smithsonian type specimen data Phylum


EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!