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hyomandibula in a sentence

1. The fish's hyomandibula bone in the hyoid region behind the gills diminished in size and became the stapes of the amphibian ear, an adaptation necessary for hearing on dry land.

2. Stingrays exhibit hyostylic jaw suspension, which means that the mandibular arch is only suspended by an articulation with the hyomandibula.

3. The columella is an evolutionary derivative of the bone known as the hyomandibula in fish ancestors, a bone that supported the skull and braincase.

4. The hyomandibula of fish migrated upwards from its jaw supporting position, and was reduced in size to form the stapes.

5. The two most anterior of these arches are thought to have become the jaw itself (see hyomandibula) and the hyoid arch, which braces the jaw against the braincase and increases mechanical efficiency.

6. The hyomandibula is elongated and was believed to swing laterally, which would allow jaw protrusion and deep biting.

7. Behind the jaw joint a robust hyomandibula is present.

8. The stapes likely evolved from the hyomandibula of lobe-finned fishes.

9. Compared to Eusthenopteron, the spiracular chamber of Panderichthys is greatly expanded and the hyomandibula is shorter compared to those in fish.

10. In spurdogs, the hyomandibula (the bone connecting the braincase to the jaws) is oriented at a right angle to the neurocranium, while in other sharks, the hyomandibula runs more parallel to the body.

11. Monophyly for Diplomystidae is well supported by synapomorphies of the vomerine and palatine shapes, cranial articulation of the hyomandibula, and heavily papillose skin.

12. The hyomandibula, commonly referred to as hyomandibular [bone] (Latin: os hyomandibulare, from Greek: hyoeides, "upsilon-shaped" (υ), and Latin: mandibula, "jawbone") is a set of bones that is found in the hyoid region in most fishes.

13. It is commonly suggested that in tetrapods (land animals), the hyomandibula evolved into the columella (stapes).

14. When vertebrates found their way onto land, the hyomandibula, with its location near the ear, began to function as a sound amplifier beside its function to support the skull.

15. As evolution later attached the cranium of terrestrial vertebrates to the rest of the skull, the hyomandibula lost its supportive function and became an interior organ, the stapes, and thus its secondary function had become its primary function.

16. As the columella is derived from the hyomandibula, many of its functional relationships remain the same.

17. The hyomandibula is a set of bones found in the hyoid region in most fishes.

18. The two most anterior of these arches are thought to have become the jaw itself (see hyomandibula) and the hyoid arch, which braces the jaw against the braincase and increases mechanical efficiency.

19. however, Ardoreosomus is distinguished from other ptycholepidforms in having a more strongly angled hyomandibula and lacking an opercular process, among others.