Palatine bones

Skull Pre-maxillae, nasals, frontals, parietals, interparietal, occipitals (supraoccipital, occipital condyles, basioccipital), zygomatics, squamosals, lacrimals, tympanic bullae, mandibles, hyoid, palatine bone, vomer, presphenoid, basisphenoid, maxillae Figs. 1, 2, 3, and 4. 

Inferiorly, the orbital floor covers the top of the maxillary antrum and sinus. The orbital floor and the medial orbital wall are the weakest parts of the bony orbit. The orbital floor is shaped by the maxillary, zygomatic, and palatine bones. 

Fig. 67. Double-stained skull of a fetus on day 18 after maternal treatment with I (60 mg/kg on day 12), Base of the skull, showing a broad gap between the palatine bones (<- ) which normally contact each other on day 18...

Ritchie (1944) wrote The Organ of Jacobson consists of paired tubular bodies, vascular and richly innervated, lying enclosed in bone in the front of the nasal chamber, and communicating with the nostrils above, and on the other hand with the mouth by two naso-palatine canals which open behind the posterior incisors. It occurs from Amphibia onwards and is probably an accessory organ of smell". 

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