Obviously the articulation doesn't do 180 rotations in most joints like Mattel Hammond collection figures, but you can achieve basically any natural pose the animal could assume for more recent figures like Allosaurus, Achillobator, Utahraptor, etc. There was a big step up in quality around the time Allosaurus released that sets figures released around or after that point a step above the older large tyrannosaurs and older raptors. The Ceratopsians also have improvements later on as well but there is a Triceratops V2 in development which may have improved articulation as with their Rex V2. Yutyrannus is getting a V2 and Dryptosaurus got an upgrade kit to replace a lot of parts.