Mosquito fossils found with 46 million year old blood
 

It wasn't amber that housed them, but shale, nevertheless scientists have a first: an intact blood meal found in a fossil. Yeah, it sounds real Jurassic Park but no one is putting up raptor fences quite yet. Nope. The DNA in the blood is most likely degraded. Score one to reality.

http://www.tgdaily.com/general-scien...year-old-blood