Uberon definition : The floor of the anterior fossa is formed by the orbital plates of the frontal, the
cribriform plate of the ethmoid, and the small wings and front part of the body of
the sphenoid; it is limited behind by the posterior borders of the small wings of
the sphenoid and by the anterior margin of the chiasmatic groove. The lesser wings
of the sphenoid separate the anterior and middle fossae.;
The floor of the anterior fossa is formed by the orbital plates of the frontal, the
cribriform plate of the ethmoid, and the small wings and front part of the body of
the sphenoid; it is limited behind by the posterior borders of the small wings of
the sphenoid and by the anterior margin of the chiasmatic groove. The lesser wings
of the sphenoid separate the anterior and middle fossae.