👉 Sphaerorhinum is a type of respiratory organ found in most mammals, particularly birds and bats. It consists of two separate structures – spheroids (spherical bones) and oropharyngeal cartilages, which are connected to the pharynx by a long tube known as the orifice. The spheroids are covered with hair-like hair cells that help in filtering out dust, pollen, and other particles from the air entering the respiratory tract.