This Fossil Ammonite (Pseudocylmenia sp.) Upper Devonian period - 360 million years old from Erfoud, Morocco was originally sold by the now closed Maxilla & Mandible, Ltd. of New York, NY. The small dark rectangular mark on the back of the fossil is from the price tag which has disappeared. The fossil is a good example of a polished Ammonite. Please examine all of the photographs, ask questions and/or request more information. Please feel free to make offers an...d thank you for looking.