Where are you calling from? <a href=" http://levitrabuycheappurchase.com/levitra-onlain.html ">where can i buy levitra online</a> The specimen that Luo studied, which currently resides at the Beijing Museum of Natural History, was the oldest multituberculate skeleton found. "Most of these types of fossils date back from 55 [million] to 100 million years ago," said Luo.