[Rockhounds] Oldest Known Man-made Structures in the Americas on LSU, Baton Rouge, campus?

[Paul]

Given that I have walked past these mounds innumerable
times on the Louisiana State University campus, I found
the latest research surprising. I actually know many the
coauthors on the below paper.

This is going to be controversial.

New Research Shows LSU Campus Mounds as
the Oldest Known Man-made Structures in the Americas
Louisiana State University, Baton Rouge, August 18, 2022
https://www.lsu.edu/mediacenter/news/2022/08/19gg_ellwood_lsucampusmounds.php

Oldest human-made structure in the Americas is older than
the Egyptian pyramids By JoAnna Wendel, Live Science, August 27, 2022
https://www.livescience.com/oldest-human-made-structure-americas

The paywalled paper is:

Brooks B. Ellwood, Sophie Warny, Rebecca A. Hackworth,
Suzanne H. Ellwood, Jonathan H. Tomkin, Samuel J. Bentley,
Dewitt H. Braud and Geoffrey C. Clayton. The LSU campus
mounds, with construction beginning at ∼11,000 BP, are the
oldest known extant man-made structures in the Americas
American Journal of Science, 322 (6) 795-827
https://www.ajsonline.org/content/322/6/795

Yours,

Paul H.