Most likely.

Some hints:

Some 2,800 fossils were found near Kunming, China--with half of them juveniles

Half of them juveniles?

So... kids.

Now read this article and compare to the one that came out July 5th. eight days later China finds:

https://www.euroweeklynews.com/2021/07/13/china-finds-over-2600-missing-children-in-search-campaign/

I suspect it was a comm that was giving a heads up to people who read comms that a bunch of missing kids were about to be found.

2800 fossils "found".

8 days later 2600 kids "found".

Pretty close. Sounds like a comm for the reveal of the missing kids.

Another option is this:

17 species at the Haiyan Lagerstätte are new to science, the researchers say

From another source:

‘Lagerstätte’ in German originally means a part of the Earth rich in mining metal ore, and was a word usually used by miners. Seilacher coopted that word for paleontology to mean a part of the Earth with a rich and extremely well-conserved deposits of fossils.

It's an old world for a site rich in mining metals that just "happened" to be used for fossils deposits. Hm...