WebBy the late Ordovician, fishes were widespread across the globe and the first jawed vertebrates, gnathostomes, had possibly appeared. The oldest gnathostome remains are enigmatic small placoid-like scales with chondrichthyan affinity, but cannot be resolved without more complete material. WebJul 11, 2024 · Grey triggerfish do have plump lips as seen in the picture and very strong toothy jaws that can break through some of the hardest, most challenging shelled items …
Gnathostomata - Wikipedia
WebJul 17, 2024 · STRONG SWIMMER The armored, jawed fish Dunkleosteus was a top ocean predator around 380 million to 360 million years ago, during the late Devonian Period. AKKHARAT JARUSILAWONG/Shutterstock... WebAug 11, 2024 · They are heterogeneous group of poikilothermic animals which include jawless fish (e.g., Lamprey) and jawed fish of class Chondrichthyes and Osteichthyes. Their physiology and immune system development vary among them and it is highly influenced by environmental parameters, unlike warm blooded vertebrates. hoffman elementary school cincinnati
Muscle - Jawed fishes Britannica
WebThe lateral line in fish and aquatic forms of amphibians is a detection system of water currents, consisting mostly of vortices. The lateral line is also sensitive to low-frequency vibrations. It is used primarily for navigation, hunting, and schooling. The mechanoreceptors are hair cells, the same mechanoreceptors for vestibular sense and hearing. Hair cells in … The largest member of the family, the stone triggerfish (Pseudobalistes naufragium) reaches 1 m (3.3 ft), but most species have a maximum length between 20 and 50 cm (8–20 in). Triggerfish have an oval-shaped, highly compressed body. The head is large, terminating in a small but strong-jawed mouth with teeth … See more Triggerfish are about 40 species of often brightly colored fish of the family Balistidae. Often marked by lines and spots, they inhabit tropical and subtropical oceans throughout the world, with the greatest See more Some species of triggerfish, such as the titan triggerfish, may be ciguatoxic and should be avoided. Others, however, such as the See more • The reef triggerfish is the state fish of Hawaii. • Most triggerfish are aggressive, but few match the orange-lined triggerfish. • The gilded triggerfish is among the few sexually dimorphic triggerfish. … See more The rather bizarre anatomy of the triggerfish reflects its typical diet of slow-moving, bottom dwelling crustaceans, mollusks See more Triggerfish lay their demersal eggs in a small hole dug in the sea bottom. Off Florida, juveniles of some species of triggerfishes are found in floating Sargassum, where they feed on the small shrimp, crabs, and mollusks found there. See more • Media related to Balistidae at Wikimedia Commons • Data related to Balistidae at Wikispecies • The dictionary definition of Balistidae at Wiktionary See more WebJawless Fish. The jawless fish, lampreys and hagfish, evolved an acquired/adaptive immune system that uses a different immune strategy and different molecular and cell elements. … hoffman elementary school san antonio tx