Pierre Gueriau

Jan 8, 2025 | nature.com | Mark Sutton |Julia D. Sigwart |Pierre Gueriau |David Siveter

AbstractMollusca is the second most species-rich animal phylum, but the pathways of early molluscan evolution have long been controversial1,2,3,4,5. Modern faunas retain only a fraction of the past forms in this hyperdiverse and long-lived group. Recent analyses6,7,8 have consistently recovered a fundamental split into two sister clades, Conchifera (including gastropods, bivalves and cephalopods) and Aculifera9, comprising Polyplacophora (‘chitons’) and Aplacophora.

Oct 10, 2024 | nature.com | Farid Saleh |Pierre Gueriau |Lukáš Laibl |Valentin Jamart |Jonathan B. Antcliffe |Allison C Daley | +4 more

replying to L. A. Muir & J. P. Botting Nature Ecology & Evolution https://doi.org/10.1038/s41559-024-02559-6 (2024)The Cabrières Biota (France) is a new diverse fossil assemblage that provides insights into Ordovician polar ecosystems1. This assemblage comprises fossils of algae, sponges, cnidarians, trilobites, non-biomineralized arthropods, molluscs, brachiopods, hyoliths, hemichordates, worms and lobopodians1, as well as trace fossils.

Feb 8, 2024 | nature.com | Farid Saleh |Pierre Gueriau |Jonathan B. Antcliffe |Sinead Lynch |Harriet Drage |Romain Vaucher | +1 more

AbstractEarly 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 the diversity and preservation of the Cabrières Biota, a newly discovered Early Ordovician Lagerstätte from Montagne Noire, southern France. The Cabrières Biota showcases a diverse polar assemblage of both biomineralized and soft-bodied organisms predominantly preserved in iron oxides.