This is a beautiful stamp souvenir sheet, issued by Comoros Islands in 2010, displaying fossils. Featured on the sheet are the Jeletzkytes Nebrascensis fossil shell, the skeleton of a Mononykus dinosaur, and famous paleontologist Othniel Charles Marsh. The sheet is Michel catalog #2650/ Bl.564, and is Post Office fresh, mint never hinged, and F/VF.