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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 hyomandibula, commonly referred to as hyomandibular [bone] (Latin: os hyomandibulare, from Greek: hyoeides, "upsilon-shaped" (υ), and Latin: mandibula, "jawbone"), is a set of bones that is found in the hyoid region in most fishes. It usually plays a role in suspending the jaws and/or operculum (teleostomi only).
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 ...
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 first set of these elements surrounded the mouth to form the jaw. The upper portion of the second embryonic arch supporting the gill became the hyomandibular bone of jawed fish, which supports the skull and therefore links the jaw to the cranium. [32] The hyomandibula is a set of bones found in the hyoid region in most fishes.
Federal investigators found nearly a dozen children to be working dangerous, overnight shifts at Seaboard Triumph Foods' pork processing plant in Sioux City, Iowa, the Department of Labor announced.
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 ...