I'm looking for a specific Science Fiction short story or novella. I've searched high and low on the Internet to no avail - maybe you guys can help me out.

The story is set on present-day earth and is about  mind-shattering archaeological finding: somewhere, a gravesite full of fossilized alien remains is found.

This of course changes the way humanity views itself and its history, but there is no evidence the Aliens ever influenced the development of humanity in any way. It's just their remains lying in the ground. Eventually the entire gravesite is excavated, and no further evidence of alien activity on earth is found. It's just those ages-old fossils that tell us we are not alone in the Universe.

If I remember correctly, the entire story consists of narration, there are no dialogs. It is set only on Earth, other planets don't play into it IIRC.

I could have sworn the story must be in one of the volumes from Gardner Dozois' "Year's Best SF stories" series that I own, but I went through them all and I can't find it.

Does anybody know the story I'm talking about?