A Petri dish has members including a receptacle and an additional lid, both having an axisymmetric shape and which are delimited by a bottom wall and at least one peripheral wall, the receptacle and lid bearing complementary lock sections so that when a stack is formed by superposing at least two dishes, borne by a first component of a first dish which can engage with the lock section of the second component of the second dish, thus making them rigidly connected to one another. These lock sections cooperate by relative rotational movement of one dish with respect to the other, the lock sections being borne by the peripheral walls and including protrusions.