Mongolian fossil is first known species of streamlined
non-avian theropod dinosaur to walk on two legs
by Bob Yirka , Phys.org, December 2, 2022
[phys.org]

The open access paper is:

Sungjin Lee et al, A non-avian dinosaur with a streamlined body
exhibits potential adaptations for swimming, Communications
Biology (2022). DOI: 10.1038/s42003-022-04119-9
[www.nature.com]

Yours,

Paul H.

"The past is never dead. It's not even past."
William Faulkner, Act 1, Scene III, Requiem for a Nun (1951)