gill bar การใช้

The discovery of pharyngeal bars ( gill bars ) makes " Metaspriggina " the oldest known animal to have this feature.
Furthermore, its gill bars have a supportive brace characterized for use as an underwater ear because it can pick up noise vibrations through the water.
These filaments are held up by gill bars which have more tiny individual lamallae which are even smaller ( yet again more Surface area to volume ratio ).
The tongue is anchored to the hyoid bone, which was once the lower half of a pair of gill bars ( the second pair after the ones that evolved into jaws ).