The study of well-preserved organic matter (OM) within mineral concretions has provided
key insights into depositional and environmental conditions in deep time. Concretions of …

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

Early Palaeozoic sites with soft-tissue preservation are predominantly found in Cambrian
rocks and tend to capture past tropical and temperate ecosystems. In this study, we describe …

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 …

Evidence of interspecific interactions in the fossil record is rare but offers valuable insights
into ancient ecologies. Exceptional fossiliferous sites can preserve complex ecological …

Burgess Shale-type faunas are critical to our understanding of animal evolution during the
Cambrian, giving an unrivalled view of the morphology of ancient organisms and the …

Understanding the functioning of extinct ecosystems is a complicated knot of ecological,
evolutionary, and preservational strands that must be untangled. For instance, anatomical …

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 …

Exceptional fossils preserve non-biomineralized tissues in the geological record and
provide crucial information on the evolution of life on Earth. Exceptionally preserved fossils …

Over one hundred arthropod fossil species have been described from the famous
Chengjiang Lagerstätte (South China, Cambrian Stage 3, ca. 518 Ma) including a diverse …