Electronic Resources

Echinoids

A site containing information about sea urchins, a "major group of marine invertebrates with a long fossil record." In addition to basic information such as how they live, feed, and reproduce, there is also an alphabetic listing of their taxa. Each entry contains diagnostic features, distribution, which species are included, and additional remarks. There is information about the morphology or anatomy of sand dollars and heart-urchins as well as regular echonoids. Additionally, there is a key to the families and genera of Echinoidea. From the Natural History Museum, London.