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iNat·475988SubclassAnimalia176,805 field observations
  1. Animals
  2. ›Echinoderms
  3. ›sea urchins and sea cucumbers
  4. ›Sea Urchins, Sand Dollars, and Heart Urchins
sea urchins
Plate 1 of 11. (c) FredD, some rights reserved (CC BY-SA) · via iNaturalist

sea urchins

Euechinoidea

The subclass Euechinoidea includes almost all living species of sea urchin, and fossil forms going back as far as the Triassic.

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3 branches of this subclass, most-observed first

Carinacea

infraclassCarinacea

irregular sea urchins

infraclassIrregularia

Aulodonta

infraclassAulodonta

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Where it lives

Recorded sightings

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geo-referenced records in GBIF, from museums, herbaria and field observers.

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In the stacks

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Every page naming Euechinoidea in the Biodiversity Heritage Library →

This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 475988.