Prehistoric planet is not the best but a great documentary. But it has some problems. First one the designs , the designs are SPOT ON but tyrannosaurus is the first problem all of the adult dinosaurs in this show seem the same the males could have vibrant colors while female tyrannosaurus was basically dull and velociraptors feather could have some colorful patterns on the males and also the triceratops frill could have some love with amazingly colorful frills to attract females , majungasaurus could have crest ortimentation , carnotorus had a accurate design but bumps on there backs a 2021 study said carnotorus actually had bumps around its body but not alot of them not the rows on there backs anymore , mosasaurus is way to mosasaurine and mosasaurus was actually a tylosaurine so it should have a larger snout and a longer tail ,rajasaurus and austroraptor could also have some love, nanuqsaurus also could’ve had some colorful feathers but the feathers was mostly dull due to fossil evidence so they get away with this one , isisaurus could have had different variants. Second one the time periods , the intro states that the series takes place in the mastricthian 66 million years during the end of the Cretaceous , dreadnoughtus lived from 76 to 70 million years ago , archipelta lived about 71 millon years ago , carnotorus lived from between 71 and 69 millon years ago , atrociraptor lived about 68.5 millon years ago , cisternosaurus lived between 83 and 70 million years ago ,trevangosaurus did not survive till the mastricthian instead dying out 68 million years ago , and velociraptor lived 75 to 71 millon years ago during the campanian. Third one the features, there’s only one problem with the features showing makishasaurus, the amazing feature about this dinosaur is having a more forward mouth I’m not saying it should have a crazy knife mouth just because it’s a feature. This is a very good series but it still had some problems but you have to agree THIS WAS A MASTERPIECE, but I will give a A-. This was a very great series and I really enjoyed it I hope you enjoyed it too.