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 ).