User:Abyssal/DYK/1

... that the low numbers of injuries in carnivorous dinosaurs (Allosaurus pictured) indicate they may have been less aggressive with individuals of their own species than modern crocodilians?
... that the Hilda mega-bonebed is Canada's largest dinosaur bonebed, preserving thousands of the horned dinosaur Centrosaurus apertus across an area of 2.3 square kilometers (0.9 sq mi)?
... that the rough-scaled sea snake is highly venomous and every scale on its body is adorned with a spine?
... that multiple Leptocleidus skeletons have been found preserved as gemstone quality opal over the course of the history of plesiosaur research?
... that paleontologists have discovered the fossilized eggs of cephalopods, fishes, and reptiles, with some dinosaur eggs being preserved with pathological shell deformities?

... that within the United States, dinosaur fossils (example pictured) have been found in Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, Georgia, Idaho, Iowa, Kansas, Louisiana, Maryland, Massachusetts, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Jersey, New Mexico, New York, North Carolina, North Dakota, Oklahoma, Oregon, Pennsylvania, South Carolina, South Dakota, Tennessee, Texas, Utah, Virginia, Washington, D.C., and Wyoming, but not in Florida, Hawaii, Illinois, Indiana, Kentucky, Maine, Michigan, New Hampshire, Ohio, Rhode Island, Vermont, Washington, West Virginia, or Wisconsin?
... that highlights from the history of tyrannosaur research include the first carnivorous dinosaur known to walk bipedally, the giant Tyrannosaurus rex, and feathered taxa from China like Yutyrannus?
... that highlights from the history of dromaeosaurid research include a skeleton of Velociraptor preserved in combat with a Protoceratops, the gigantic Utahraptor, and tiny four-winged Microraptor?