Well, according to the Woodmorappe's book
Noah’s Ark: A Feasibility Study, there are 8000 kinds of animals that breathe air through their nostrils. Creationists at AiG seem to think this an overestimate: (
How did the animals fit on Noah’s Ark?.
Recently though, Todd Wood of AiG gave the estimate of 2000 in his piece
Two of Every Kind
According to Lenny Flank's article
here, creationist Wayne Frair at the Arkansas trial gave the estimate of 10,000 kinds
in total plus or minus a few thousand.
So, from those sources, I'd estimate that there are about a hundred thousand kinds in total. After all, land-dwelling tetrapods represent only a small fraction of life on earth. They are probably outnumbered by insect kinds alone, not to mention all the other invertebrates. Then you have to consider protists, plants, fungi, archaea and bacteria. Plus, most of life that was created are now extinct.
I haven't seen a creationist study of this though.
Edited by Doddy, : spelling
Edited by Doddy, : grammar
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