Zoologists/fauna taxonomists how many genera of animals exist?

Question

I know documented species number anywhere between 1.5 to 2 million and possibly even 5 million if all species are documented.

However I am interested in only genera ...does it bring the number down to say 100,000 or is this too conservative/too large a figure?

I am very interested in this and if you can give me a link or website that has a database of all genera and species within those genera that would be helpful.

So how many?

Answer 1

<<I am very interested in this and if you can give me a link or website that has a database of all genera and species within those genera that would be helpful.>>

As you can imagine, putting together a website like that is ever so slightly challenging.  As author of a website containing mention of (probably) every Mesozoic cynodont species ever published (including mammals), I know how much work is required for even such a relatively small group.  What might help is the effort of Mikko Haaramo.  His main interest is actually reptiles, but his listings go much wider than that.

Keep in mind that the labyrinth he's brought together is more inclusvie than any sensible person could expect.