The Biology Catalog presents lists of genera [including synonyms] for all groups of organisms, both living and fossil.
Some groups are World Species listings. The index pages show the number of genera and species in the groups.
The lists are arranged in a hierarchal ordering for each group.
Group Coordinators maintain the listings.
Synopsis of world taxon A list of Phyla, Classes and Orders arranged phylogenetically
SALTICIDAE OF THE U.S.A.
Last Updated: March 24, 2008
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