![Hell Creek Enthusiast (Spinosaurus Arc) on Twitter: "It is no surprise that paleontology is a science of incomplete data. It's part of the deal. But it is easy to get a little Hell Creek Enthusiast (Spinosaurus Arc) on Twitter: "It is no surprise that paleontology is a science of incomplete data. It's part of the deal. But it is easy to get a little](https://pbs.twimg.com/media/Ewc_t1JUcAY3j2R.jpg:large)
Hell Creek Enthusiast (Spinosaurus Arc) on Twitter: "It is no surprise that paleontology is a science of incomplete data. It's part of the deal. But it is easy to get a little
![Hell Creek Enthusiast (Spinosaurus Arc) on Twitter: "..what the ecosystem was like. In comparison to other formations, this may be true, but this does not mean it is anywhere close to perfect. Hell Creek Enthusiast (Spinosaurus Arc) on Twitter: "..what the ecosystem was like. In comparison to other formations, this may be true, but this does not mean it is anywhere close to perfect.](https://pbs.twimg.com/media/Ewc_umtVkAEYKNC.jpg)
Hell Creek Enthusiast (Spinosaurus Arc) on Twitter: "..what the ecosystem was like. In comparison to other formations, this may be true, but this does not mean it is anywhere close to perfect.
![Hell Creek Enthusiast (Spinosaurus Arc) on Twitter: "Sometimes the way an animal is built disallows their preservation. Birds, for instance, have hollow bones, and many live in vegetated areas, so many places Hell Creek Enthusiast (Spinosaurus Arc) on Twitter: "Sometimes the way an animal is built disallows their preservation. Birds, for instance, have hollow bones, and many live in vegetated areas, so many places](https://pbs.twimg.com/media/Ewc_rAmVIAAeO7P.jpg:large)
Hell Creek Enthusiast (Spinosaurus Arc) on Twitter: "Sometimes the way an animal is built disallows their preservation. Birds, for instance, have hollow bones, and many live in vegetated areas, so many places
![Species New to Science: [Paleontology • 2015] Dakotaraptor steini • The First Giant Raptor (Theropoda: Dromaeosauridae) from the latest Cretaceous (Hell Creek Formation, South Dakota) Species New to Science: [Paleontology • 2015] Dakotaraptor steini • The First Giant Raptor (Theropoda: Dromaeosauridae) from the latest Cretaceous (Hell Creek Formation, South Dakota)](http://1.bp.blogspot.com/-6tjkDMKQ7hQ/VjS4Mu1RlOI/AAAAAAAAvo0/4SerAcHAYnk/s1600/Dakotaraptor_steini-novataxa_2015-DePalma-Burnham-Martin-Larson-et-Bakker_PaleoArt_EWilloughby.jpg)
Species New to Science: [Paleontology • 2015] Dakotaraptor steini • The First Giant Raptor (Theropoda: Dromaeosauridae) from the latest Cretaceous (Hell Creek Formation, South Dakota)
![The Hell Creek Formation and its contribution to the Cretaceous–Paleogene extinction: A short primer - ScienceDirect The Hell Creek Formation and its contribution to the Cretaceous–Paleogene extinction: A short primer - ScienceDirect](https://ars.els-cdn.com/content/image/1-s2.0-S0195667115300306-fx1.jpg)
The Hell Creek Formation and its contribution to the Cretaceous–Paleogene extinction: A short primer - ScienceDirect
![The Last Days of the Dinosaurs: An Asteroid, Extinction, and the Beginning of Our World: Black, Riley: 9781250271044: Amazon.com: Books The Last Days of the Dinosaurs: An Asteroid, Extinction, and the Beginning of Our World: Black, Riley: 9781250271044: Amazon.com: Books](https://m.media-amazon.com/images/I/81BN7kYaZuL._AC_UF1000,1000_QL80_.jpg)
The Last Days of the Dinosaurs: An Asteroid, Extinction, and the Beginning of Our World: Black, Riley: 9781250271044: Amazon.com: Books
![The Hell Creek Formation and its contribution to the Cretaceous–Paleogene extinction: A short primer - ScienceDirect The Hell Creek Formation and its contribution to the Cretaceous–Paleogene extinction: A short primer - ScienceDirect](https://ars.els-cdn.com/content/image/1-s2.0-S0195667115300306-gr5.jpg)
The Hell Creek Formation and its contribution to the Cretaceous–Paleogene extinction: A short primer - ScienceDirect
![Dinosaur Biodiversity Was in Decline Millions of Years before End-Cretaceous Extinction: Study | Sci.News Dinosaur Biodiversity Was in Decline Millions of Years before End-Cretaceous Extinction: Study | Sci.News](https://cdn.sci.news/images/enlarge10/image_11228e-Shanyang-Dinosaurs.jpg)