Latest Devonian (Famennian, expansa Zone) conodonts and sponge-microbe symbionts in Pinyon Peak Limestone, Star Range, southwestern Utah, lead to reevaluation of global Dasberg Event

We document the signature of the late Famennian (Early expansa Zone) multi-phase Dasberg Event, previously termed ALFIE, in Utah and Colorado. The Dasberg was a major event, not a crisis, because it resulted from a eustatic rise that introduced the Etroeungt fauna, consisting of large solitary rugose corals and unusually large brachiopods, from an as yet undiscovered refugium. This “Lazarus” fauna was short-lived; it disappeared within a few...