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.

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Preferred marks the preferred classification for this taxon.

Recognized By Rank Classification
World Register of Marine Species (WoRMS)
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Class Import
Anage Data Class
Animal Diversity Web Descriptions
Animal Diversity Web Descriptions Class
Appeltans et al, 2012
AquaMaps Resource Class
AskNature Class
Anoka Ramsey Community College BIOL 1107 Fall 2010 Class
BOLDS resource for higher-level taxa
BOLDS resource for higher-level taxa
BOLDS images II Class
BOLDS resource for species-level taxa Class
BioImages resource Class
  • Echinoidea
EOL Group on Flickr Class
EOL Group on Flickr Order
EOL Group on Flickr
Encyclopedia of Marine Life of Britain and Ireland Resource Class
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Fairbairn, 2013 Class
  • Echinoidea
Freshwater and Marine Image Bank, University Libraries, U Washington
Global Biotic Interactions Class
Global Biotic Interactions Class
Global Biotic Interactions Class
IUCN Red List Class
IUCN Red List
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Class Import Class
AnAge database Class
Integrated Taxonomic Information System (ITIS)
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Inventaire National du Patrimoine Naturel Class
MCZ resource
MCZ resource Class
MarLIN resource Class
Moorea Biocode
  • Echinoidea
NCBI Taxonomy
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NMNH Invertebrate Zoology resource Class
Natural History Museum Species of the day Class
NatureServe resource Class
OBIS depth range resource Class
OBIS depth range resource Order
Ocean Genome Resource- genomic DNA available Class
Paleobiology Database
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Reid et al, 2012 Class
Invertebrates of the Salish Sea Class
SERPENT resource Class
SPIRE resource
Sloan-CoML NameLink Project
  • Echinoidea
Species 2000 & ITIS Catalogue of Life: April 2013
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IUCN Structured Data Class
Taxonomic Hierarchy of COL-China 2012
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Vimeo resource Class
Vimeo resource
  • Echinoidea
Monthly ARKive text import Class
Wikimedia Commons
Wikimedia Commons Class
Wikipedia Class
iNaturalist Images Class


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.

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