[Taxacom] veracity of figures

[Joel Hallan]

I published a document on the web about 7 years ago at:
 
http://insects.tamu.edu/research/collection/hallan/0SYNOPT1.htm
 
It is a synopsis down to the level of order, both fossil and recent.  The genera are based on data in a database and the species come from a database or estimates given by specialists for those groups.  There are some attached documents at the end of it that give more information.
 
There are about 2500 orders.  25,000 families.
 
Joel Hallan
Austin, Texas