Strange hollow ball-like structures found in
80-million-year-old fossils by University of Western Australia
https://phys.org/news/2020-05-strange-hollow-ball-like-million-year-old-fossils.html
http://www.news.uwa.edu.au/2020051212074/research/strange-hollow-ball-structures-found-80-million-year-old-fossils
https://scienceblog.com/516317/strange-hollow-buckyballs-found-in-80-million-year-old-fossils/
Uintacrinus - https://en.wikipedia.org/wiki/Uintacrinus
Yours,
Paul H.