The Echinoid Directory

Designed and created by
Dr. Andrew B. Smith, The Natural History Museum, London

Edited by Dr. Andrew B. Smith & Dr. Andreas Kroh, Natural History Museum, Vienna, Austria

How to cite this site
About this site	Scope and aims - how to get the most out of your visit to this site Update of changes (check here for new postings)
Introduction	Sea urchins - what they are, how they live and a brief history of the group
Morphology and morphological terms	An introductory guide to the morphology and terminology used in describing echinoids
Key to the families and genera	An illustrated key that helps you identify echinoids to generic level, and gives more detailed information about the families and orders
Classification	A hierarchical listing of all genera and higher taxa used on this site
Index to taxa	Searchable, alphabetic listing of all taxonomic groups to genus level to take you straight to detailed information on that group