Protogrammoceras paltum (Buckman), a late Pliensbachian (Jurassic) ammonite from Axel Heiberg Island, Canadian Arctic Archipelago
Ammonites collected from red-weathering sandstones lying between the Heiberg and Savik formations north of Wolf Fiord on southeastern Axel Heiberg Island are identified as Protogrammoceras paltum (...