[CarolinaGuitarman]

"How about sharks? They've been on the planet for 600 million years."

Really? Citation please.

[frgoff]

http://www.sharkfoundation.com/facts.htm
http://news.nationalgeographic.com/news/2005/06/0613_050613_sharkfacts_2.html

I'm sorry, my numbers are off. It's 400 million years. TOE predicts a few million descendant species over that time. Why hasn't anyone found them?

[Right Wing Professor]

"How about sharks? They've been on the planet for 600 million years."

Really? Citation please.

I'd like to see it too. I wasn't aware there were Precambrian sharks.