sentences:  The choanae are as far back as possible without contacting the suborbital fenestrae; there is a thin choanal septum between them where they emerge in the pterygoids.The nasal bones are quite long, and sutured together along their whole length; they begin just behind the internarial bar where the premaxillae meet, and end with two processes beneath the frontal bone.The lacrimal bones are L-shaped, with one ramus projecting forwards to meet the maxilla and one ramus projecting downwards to form part of the orbit.