伯朝拉河
"Arcticoceras kochi" and "A ishmanae" have been found in the boreal Bathonian stage of central East Greenland. "Arcticoceras" and "Arctocephalites" are found the Volga River Basin, Sartov Region, and "Arctocephalites" in the Pechora River Basin indicating an earlier and deeper penetration of arctic water into European Russia than previously thought.