Upper Sinemurian Ammonite Successions Based on 41 Faunal Horizons: an Attempt at Worldwide Correlation

摘要

Based on Euroboreal and Alpine data we propose a new composite set of 41 ammonite faunal horizons for the Upper Sinemurian. These are considered the most complete succession potentially correlatable. The sequence of horizons includes published information that is extended and improved for the Raricostatum, Macdonnelli, and Aplanatum Subzones.