1 Talk Secondary palate Edit Fossil Record The secondary palate is an anatomical structure that divides the nasal cavity from the oral cavity in many vertebrates. This article is a stub. You can help Fossil Wiki by expanding it. Read more The jaw is either of the two opposable structures forming, or near the entrance to the mouth. In... Jaw Dinosaurs believed to have had gizzards based on the discovery of gizzard stones recovered near... Gizzard In anatomy, a foramen (pl. foramina) is any opening. Fenestra Foramen Related Categories Categories: Anatomy | Article stubs Add category