Biogeography of Triassic Ammonoids

摘要: After the end-Permian mass extinction, ammonoids experienced an explosive recovery followed by episodes of radiation and extinction. These events were associated with sudden biogeographic changes often closely related to major climatic oceanographic changes. Previous studies Triassic have rarely focused on a specific time-interval based quantitative methods. Thus, we will first review biogeographical methods signals known from ammonoids. Secondly, focus approaches that improve our knowledge ammonoid structuring dynamics during Triassic, discuss controlling factors such as Sea Surface Temperature oceanic circulation. We show latitudinal faunas persisted along eastern Panthalassa Ladinian, marked differentiation between Tethys Panthalassic realms. Biogeographical configurations Carnian, Norian Rhaetian appear more homogeneous, although weak may continued up late Carnian.