A core sampling device includes a core sampling punch, a core excision punch that makes a recess in a receiver body, and an ejector that expels a sample core into the receiver body. The core excision punch is mounted inside the core sampling punch and is substantially coaxial with the core sampling punch. Both punches are able to move in translation and/or rotation with respect to one another, and the ejector is arranged so as to expel cores from each punch.