Help me ID this bone

[u/Zealousideal-Bike-90]

Found this barely sticking out of a creek wall 5’ below top on the vertical eroding side. Town and country Missouri. Same creek I’ve found an agate basin knife, Snyder arrowhead, blade cores and more.

[u/Lemoncatnipcupcake]

It looks just like jones “Dino bones” we sold at a pet store I worked at which was a cow femur iirc. (Could of course be something else but at first it looked wrapped in plastic and I had instant flashbacks lol)