Abstract The Fezouata Biota in Morocco is the only Lower Ordovician Lagerstätte yielding a
biologically diverse assemblage in a fully marine environment, whilst also containing …

Abstract The Cambrian 'Explosion', located by many authors between 540 and 520 million
years ago (Ma), is considered to be an abrupt appearance in the fossil record of most animal …

Exceptionally preserved fossil biotas provide crucial data on early animal evolution. Fossil
anatomy allows for reconstruction of the animal stem lineages, informing the stepwise …

A review of biodiversity curves of marine organisms indicates that, despite fluctuations in
amplitude (some large), a large-scale, long-term radiation of life took place during the early …

Introduction The Early Ordovician Fezouata Shale Formation (485–475Ma, Morocco) is a
critical source of evidence for the unfolding Great Ordovician Biodiversification Event …

Abstract The Fezouata Biota (Morocco) is a unique Early Ordovician fossil assemblage. The
discovery of this biota revolutionized our understanding of Earth's early animal …

The concept of cyclic closure and opening of oceans along the same crustal scar was
introduced by JT Wilson (1966) based on the example of the Atlantic Ocean and its …

The extinct echinoderm clade Stylophora consists of some of the strangest known
deuterostomes. Stylophorans are known from complete, fully articulated skeletal remains …

Abstract The Early Ordovician is a key interval for our understanding of the evolution of life
on Earth as it lays at the transition between the Cambrian Explosion and the Ordovician …

Abstract The Ordovician of North and West Africa comprises three main transgressive–
regressive sequences understood as 'second-order'cycles of 10–15 myr duration. Tide-to …