Grallator Dinosaur Track Quetzalcoatlus Its large jaws could open

Its large jaws could open about 90 degrees

It is fascinating to see how the animal reacted to the injury or disease and to speculate if it ultimately led to the animal’s death

Just look at the serrations on this tooth

Eryon actiformis is an extinct member of the diverse group of arthropods called Decapods

Fox Hills Formation of South Dakota

Grallator Dinosaur Track Quetzalcoatlus Its large jaws could openGrallator is an ichnogenus (form taxon based on footprints) which covers a common type of small, three toed print made by a variety of bipedal theropod dinosaurs. Grallator type footprints have been found in formations dating from the Early Triassic through to the early Cretaceous periods. They are found in the United States, Canada, Europe, Australia, Brazil (Sousa and Santa Maria Formations) and China, but are most abundant on the east coast of