. "Hartz Fjeld Formation"@en . . . . . . "43367381"^^ . . . . . . "Hartz Fjeld Formation"@en . . . . . "The Hartz Fjeld Formation is a geologic formation in Greenland. It preserves fossils dating back to the Cretaceous period."@en . . "The Hartz Fjeld Formation is a geologic formation in Greenland. It preserves fossils dating back to the Cretaceous period."@en . . . "Cretaceous"@en . "1096213147"^^ . . . . . . "1253"^^ . . . .