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Batomorphi is a clade of cartilaginous fishes, commonly known as rays, this taxon is also known as the superorder Batoidea, but the 5th edition of Fishes of the World classifies it as the division Batomorphi. [2]
The labial palps borne on the sides of labium are the counterparts of maxillary palps. Like the maxillary palps, the labial palps aid sensory function in eating. In many species the musculature of the labium is much more complex than that of the other jaws, because in most, the ligula, palps and prementum all can be moved independently.
In the adult insect, the head capsule appears unsegmented, though embryological studies show it to consist of six segments that bear the paired head appendages, including the mouthparts, each pair on a specific segment. [7] Each such pair occupies one segment, though not all segments in modern insects bear any visible appendages.
Their upper jaws are filled with a band of “short, conical teeth,” with pointy tips. The species is only known to live in the southwestern Pacific Ocean in Vanuatu, researchers said.
Fish jaws, like vertebrates in general, normally show bilateral symmetry. An exception occurs with the parasitic scale-eating cichlid Perissodus microlepis. The jaws of this fish occur in two distinct morphological forms. One morph has its jaw twisted to the left, allowing it to eat scales more readily on its victim's right flank.
rounded or pointed (e.g. round goby) truncated , ending in a more-or-less vertical edge (e.g. trout ) emarginate , ending with a slight inward curve (e.g. Eurasian carp )
The fossils showed Arthropleura's head was roughly circular, with slender antennae, stalked eyes and mandibles - jaws - fixed under it. Arthropleura had two sets of feeding appendages, the first ...
Ancient swimming ‘taco’ had ‘bug jaws,’ new fossils show. Mindy Weisberger, CNN. July 30, 2024 at 2:49 PM ... These small, paired appendages near the mouth bite, hold and tear food, and ...