This picture is of a Trinucleus godfussi (Barrande) trilobite fossil. It was found in Wesela Bohemia. The fossil dates to Ordovician Period. Fossil displayed at Muséum National D'Historie Naturelle Jardin Des Plantes Paléontologie et Anatomie Comparée, Paris, France. Image taken August 2016.
Learn more at their website: https://www.mnhn.fr/en/visit/lieux/galerie-paleontologie-anatomie-comparee-paleontology-and-comparative-anatomy-gallery
