Bone is a biological production that is historically inert and is unable as such to shed light on religious ceremonials. It has been observed in certain excavations of sanctuaries that the remains found in the sacred enclosure are scarcely distinguishable from ordinary food refuse, were it not for the relative abundance, in certain cases, of given species, or of specific animal parts. Consequently, this limits the potential of zooarchaeology to reveal ceremonials involving animals dedicated to a divinity. This assessment highlights the interest of the excavation of Authevernes sanctuary, where different aspects of the ritual are revealed by the intentional burial , in a foundation level, in pits and in a ditch, of animals or parts of animal carcasses, indicating a diversity of religious practices. This is the case of a foundation deposit within the temple, with the exposition of a horse and the manipulation of its skeleton, as also in the pits, where quarters of animals have been sacrificially burnt along with pottery, or a cereal-based preparation, hazelnuts and grapes. Thanks to these observations, it is possible to reconstitute with some certainty certain aspects of religious ceremonials within a territorial sanctuary in northern Gaul. Traduction : Margaret CADOUX.