One of two oval processes on the under surface of the occipital bone, one on each side of the foramen magnum, for articulation with the atlas. picture #1 picture #2 See atlas
A knob on either side of the foramen magnum that articulates with the first vertebra.
One of two oval processes on the lateral portions of the occipital bone, on either side of the foramen magnum, for articulation with the atlas.
Surface of articulation between cranium and first cervical vertebra (atlas); two such condyles in mammals, on either side of foramen magnum.
a rounded projection(s) from the back of the skull which meets the first cervical (neck) vertebra and allows the head to flex and/or rotate on the end of the spine. It is usually formed by some combination of the basioccipital and the exoccipitals. See The Occiput for details.
the articular surface of the skull and the neck. On dinosaurs this is a ball-like joint.
The lateral parts of the occipital bone are situated at the sides of the foramen magnum; on their under surfaces are the occipital condyles for articulation with the superior facets of the atlas.