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The viper dogfish is the only dogfish species that lacks a suborbital muscle, which is normally responsible for pulling the jaws forward when biting. Jaw protrusion is instead effected by the hyomandibular bone, which is articulated to the skull in a manner that allows it to swing down and forward. This unique arrangement serves to increase the ...
Centroscyllium excelsum Shirai & Nakaya, 1990 (High-fin dogfish) Centroscyllium fabricii (J. C. H. Reinhardt, 1825) (Black dogfish) Centroscyllium granulatum Günther, 1887 (Granular dogfish) Centroscyllium kamoharai T. Abe, 1966 (Bare-skin dogfish) Centroscyllium nigrum Garman, 1899 (Comb-tooth dogfish) Centroscyllium ornatum (Alcock, 1889 ...
Because its jaw can unhinge, the viperfish can eat large prey for its size. Pacific Viperfish Use Bioluminescence. Like many of the sea creatures that live at these depths, the Pacific viperfish ...
Dogfish sharks use their strong jaw and sharp teeth to consume their prey. The spiny dogfish has broken several records in the areas of migration and gestation. This shark tends to be a highly migratory species: one shark was recorded as travelling 8,000 km (5,000 miles) after being tagged in Washington state, United States, and found again ...
Gnathostomata is traditionally a infraphylum, broken into three top-level groupings: Chondrichthyes, or the cartilaginous fish; Placodermi, an extinct grade of armored fish; and Teleostomi, which includes the familiar classes of bony fish, birds, mammals, reptiles, and amphibians. Some classification systems have used the term Amphirhina.
This may be undertaken when cysts are very large, and their removal would leave a significant surgical defect or risk jaw fracture. Enucleation with curettage—this is the removal of the cyst and some of the surrounding bone, which may contain remnants of the lining of the cyst. Curettage may be undertaken if the cyst lining is thin and ...
The upper jaw contains three of the fours sets with small teeth usually having five cusps, and the lower jaw contains the fourth set with interlocking blade-like teeth with one cusp. [3] The gills of the Blackmouth lanternfish are relatively large, approximately oblique, and roughly all the same size. [ 3 ]
The surprise was that part of Yager's jaw hadn't made it into his grave along with the rest of his remains. "We have absolutely no idea how [the jawbone] came into the child's collection," said ...