A panel, in particular floor panel (1, 2), with a core of wood material or a wood material/plastic mixture (17), a top side (18) and a bottom side (19), which panel has on at least two opposite lateral edges (I, II) a profiling corresponding to one another such that two identically embodied panels (1, 2) can be connected and locked to one another by an essentially vertical joining motion in the horizontal (H) and vertical (V) directions, wherein the locking in the vertical direction (V) can be brought about by at least one tongue element (3) movable in the horizontal direction (H), which element snaps into place during the joining motion behind a locking edge (4) extending essentially in the horizontal direction (H), is characterized in that the tongue element (3) is formed in one piece out of the core (17).