Thesiss

Environmental perturbations associated with the late-Permian mass extinction and Early Triassic recovery are widely studied, and our understanding of global events during this biotic crisis continues to improve. Marine carbonates preserve geochemical proxy records of global chan…

Streptacididae is among the earliest families in the subclass Heterobranchia, an abundant and ubiquitous subclass of fossil and modern Mollusca. In the Paleozoic, the subclass Heterobranchia contains one informal group with two genera and two species in the Early and Middle Devo…

The end-Permian mass extinction occurred ∼251 million years ago and represents the largest extinction in the history of life. Following end-Permian mass extinction, a large-scale reorganization of marine communities occurred after a delay of 4-7 million years. To better understa…

The "Rides Prerifaines" of northern Morocco represent an unusual type of inversion that inverts only the sedimentary fill of a complex Triassic-lower Jurassic half-graben system, without significantly involving the underlying basement. Frontal and lateral ramp anticlines form ov…