MPC Prehistoric Animals Plus Marx Triceratops 1960s

Bought these together so posting them together. There is a Marx Brown Triceratops in the lot I have posted these before so I shall focus of the MPC creatures.
In photo #2 I have thew gray MPC Styracaceous along with the tan Marx version. The MPC version is almost an exact copy but a bit smaller. Most MPC dinos are Marx copies but smaller.
Next is the MPC Brontosaurus which is a completely different pose and much smaller. It makes a good juvenile Brontosaurus for the Marx Brontos. I have a gray Marx version behind it. The brown color is not common for MPC dinos.
Wrapping it up is a Diatryma, which is a very large prehistoric bird. A bit bigger than an ostrich but much more heavily built as it was meat eater. This was one of the few original prehistoric animals MPC made and one of the more desirable. Also this one stands well so all good.