[gore3000]

More than 75 percent of all extant species (not just the dinosaurs) became extinct at the K-T boundary.

So how many species were there before the K-T boundary? How many after? To the nearest hundred will be sufficient. Who counted them?

Your statement is just part of the evo garbage dished out constantly without any evidence. The fact is that of the major classifications of living animals, the only one that became extinct at the 65 million year or so point, is dinosaurs. Reptiles, amniotes, fish, mammals, birds, etc. all survived just fine into our time.

[Junior]

Okay, we're going to delve into an area with which you have very little apparent knowledge -- mathematics. Statistically, only 25 percent of the species found immediately before the K-T boundary appear immediately after. One need not know the total number of species before and after, any more than one needs to interview every person in the United States to determine popular views on certain matters.

Of course, you've shown only the shallowest grasp of math in the past, Mr. 1⁷²⁰, so I doubt you'll actually understand the above paragraph. Of course, you've also shown a shallow grasp of science and religion, so at least you're consistent.