Hilmar is right - if you look at the Copyright notice at the bottom, it is rather unfriendly to reuse (therefore, enter DateLife):
"Copyright ©2005-2011. All Rights Reserved. Substantial duplication is not permitted. We encourage wide use of this resource, but until it is complete it should not be used to represent a synthesis for any taxonomic group. Currently large scale, automated, data-mining is not permitted. Consult the authors if you have any questions about appropriate use, or if you plan to publish results from the database."