You may use this page to check the taxonomy of the taxa you are interested in.
First choose a database,
then give a species/taxon name and
a depth for tree display.
For example you may select mammalia with a depth equal
to 3 in GenBank.
Warning:
you may give only one full species name at a time.
This form allows you to retrieve all gene families that are shared
by a given set of taxa . Any taxonomic level can be used and
mixed to compose the query (e.g., Homo sapiens, Primate, Mammalian,etc. ).
Warning: each line of the "Taxa list" area must contain only a single taxon
name.