This image is of a Calamoseris coral fossil. It was found in Wagnon Ardennes France. The fossil dates to the Middle Jurassic Period. It was displayed at Muséum National D'Historie Naturelle Jardin Des Plantes Paléontologie et Anatomie Comparée, Paris, France. Image taken 2009.
Learn more at their website: https://www.mnhn.fr/en/visit/lieux/galerie-paleontologie-anatomie-comparee-paleontology-and-comparative-anatomy-gallery
