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.

Please wait...

Preferred marks the preferred classification for this taxon.

Recognized By Rank Classification
Species 2000 & ITIS Catalogue of Life: April 2013
view in classification
Order
Inventaire National du Patrimoine Naturel Order
AquaMaps Resource Order
AskNature Order
BOLDS resource for higher-level taxa
BOLDS resource for higher-level taxa
BOLD images
  • Ophiurida
BOLDS images II Order
BOLDS resource for species-level taxa Order
EOL Group on Flickr Order
EOL Group on Flickr Order
EOL hotlist Scratchpad Order
EOL hotlist Scratchpad Order
  • Ophiurida
Encyclopedia of Marine Life of Britain and Ireland Resource Order
IRMNG
view in classification
Order
Global Biotic Interactions Order
Global Biotic Interactions Order
IABIN resource Order
BioLib.cz Import
Integrated Taxonomic Information System (ITIS)
view in classification
Order
Animal Diversity Web Descriptions Order
Library of Alexandria Order
Library of Alexandria
MarLIN resource Order
NCBI Taxonomy
view in classification
Order
NMNH Invertebrate Zoology resource Order
NatureServe resource Order
OBIS depth range resource Order
Ocean Genome Resource- genomic DNA available Order
Ocean Genome Resource- genomic DNA available Order
Paleobiology Database
view in classification
Order
Invertebrates of the Salish Sea Order
Sloan-CoML NameLink Project
  • Ophiurida
Monthly ARKive text import Order
Taxonomic Hierarchy of COL-China 2012
view in classification
Order
World Register of Marine Species (WoRMS)
view in classification
Order
Wikimedia Commons
Wikimedia Commons Order
Wikipedia Order
Wikipedia Order
iNaturalist Images Order

Disclaimer

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!