Reddit reviews Evolution

Is it Evolution by Stephen Baxter?

It's good stuff. Some of the writing is just so-so, but the idea is pretty solid. Base human stock + a few nudges from bioengineers = wide variety of forms suited to ecological niches vacated by mass extinctions.

If you like it, you might also like the novel Evolution by Stephen Baxter. I'll warn you, like most of his writing, it's a little bleak.

Stephen Baxter imagined such a creature in "Evolution":

http://www.amazon.com/Evolution-Stephen-Baxter/dp/0345457838

Some kind of 100-meter sized pterodactylus.

Stephen Baxter's book Evolution contains a description of the strike, and how it would have been experienced by creatures around the world. It remains among the most horrifying passages I've ever read.

I'm going from memory here, but IIRC one of the things he noted was that there was no way to describe what the impact looked like, because if you weren't over the horizon when it happened, you were instantly vaporized.

(NB: I have a love-hate relationship with that book, but IMHO it's a worthwhile read, and most of it is very good.)

This may not fit - it's been maybe 15 years since I read it, and my memories are hazy. But Evolution by Stephen Baxter might be the thing for you. I definitely enjoyed it.

Evolution, by Stephen Baxter is an interesting read, and includes dinosaurs in the relevant time period.

Somewhat related, the sci-fi-ish book Evolution by Stephen Baxter includes a detailed narrative of what it would have been like to be there. Absolutely harrowing.

(The book overall is maybe 3.5 out of 5, but a lot of it is very good and the whole thing is quite thought-provoking.)

You may also enjoy Stephen Baxter's Evolution.