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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 ...
Aculeola nigra F. de Buen, 1959 (Hook-tooth dogfish) Genus Centroscyllium J. P. Müller & Henle, 1841. 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 ...
The upper portion of the second embryonic arch supporting the gill became the hyomandibular bone of jawed fishes, which supports the skull and therefore links the jaw to the cranium. [ 4 ] When vertebrates found their way onto land, the hyomandibula, with its location near the ear, began to function as a sound amplifier beside its function to ...
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 ...
In lobe-finned fishes and the early fossil tetrapods, the bone homologous to the mandible of mammals is merely the largest of several bones in the lower jaw. It is referred to as the dentary bone, and forms the body of the outer surface of the jaw. It is bordered below by a number of splenial bones, while the angle of the jaw is formed by a ...
Squalus is a genus of dogfish sharks in the family Squalidae.Commonly known as spurdogs, these sharks are characterized by smooth dorsal fin spines, teeth in upper and lower jaws similar in size, caudal peduncle with lateral keels; upper precaudal pit usually present, and caudal fin without subterminal notch.
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 ...
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 ...