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There was a bony ridge on its nose and multiple hornlets and ridges, similar to Ceratosaurus and Tameryraptor. Yangchuanosaurus was a large, powerful meat-eater. It walked on two large, muscular legs, had short arms, a strong, short neck, a big head with powerful jaws, and large, serrated teeth. It had a long, massive tail that was about half ...
Common names of fish can refer to a single species; to an entire group of species, such as a genus or family; or to multiple unrelated species or groups. Ambiguous common names are accompanied by their possible meanings. Scientific names for individual species and higher taxa are included in parentheses.
Different researchers use either name to refer to the same animal. "Eugongbusaurus" wucaiwanensis: Coined for a referred species of Gongbusaurus. This name is said to have been leaked accidentally. "Futabasaurus": A supposed tyrannosaur from Japan. If formally described, it would require a new name as Futabasaurus has already been used for a ...
Needlefish (family Belonidae) or long toms [2] are piscivorous fishes primarily associated with very shallow marine habitats or the surface of the open sea. Some genera include species found in marine, brackish, and freshwater environments (e.g., Strongylura), while a few genera are confined to freshwater rivers and streams, including Belonion, Potamorrhaphis, and Xenentodon. [3]
Naso is a genus of marine ray-finned fishes belonging to the family, Acanthuridae, the unicornfishes, surgeonfishes and tangs.The fishes in this genus are known commonly as unicornfishes because of the "rostral protuberance", a hornlike extension of the forehead present in some species.
Carrano, Benson & Sampson (2012) noted that the name Metriacanthosauridae should be used as it has priority over Sinraptoridae. [4] Cladistically, Sinraptoridae had been latest defined in 2005 by Paul Sereno as the most inclusive monophyletic group that contains Sinraptor dongi and all species closer to Sinraptor than to either Allosaurus fragilis, Carcharodontosaurus saharicus, or the house ...
Chimaeras [1] are cartilaginous fish in the order Chimaeriformes (/ k ɪ ˈ m ɛ r ɪ f ɔːr m iː z /), known informally as ghost sharks, rat fish (not to be confused with rattails), spookfish, or rabbit fish; the last two names are also applied to Opisthoproctidae and Siganidae, respectively.
While the houndfish has no spines, its dorsal fin has 21–25 soft rays, and its anal fin has 19–22. [2] They are also known to have 80–86 vertebrae. [2] A key way of distinguishing the houndfish from other members of the genus Tylosurus is that the houndfish's teeth point anteriorly when the fish is a juvenile.