Upper Ordovician Lambeoceras Foerste, 1917 (Actinocerida, Cephalopoda) as stratigraphical, biogeogrephical and environmental indicators

Abstract

The Upper Ordovician genus Lambeoceras is known from the all Northern Hemisphaera (from Canada to China). For his narrow stratigraphical and restricted ecological occurrence is possible to use him as an biogeographical and environmental indicator.

Keywords

• Ordovik
• Actinocerida
• Cephalopoda
• Lambeoceras
• stratigrafie
• paleobiogeografie
• paleoekologie