Keywords: Trachodon (Pteropelyx) marginatus humerus and skin.png Uploaded with en wp UW marker 2014 02 08 Trachodon Pteropelyx marginatus humerus and epidermis humerus viewed from front and rear skin impression as preserved Original publication Lambe L M 1902 On Vertebrata of the Mid-Cretaceous of the North West Territory Contributions to Canadian Palaeontology 3 4 <br/> Immediate source http //dx doi org/10 5962/bhl title 61817 1902 Lawrence Morris Lambe<br/> Life time 1863 “1919 PD-old-80 PD-US-1923 Hadrosauridae Pteropelyx |