elasmobranchii การใช้

• Stethacanthids are classified within the division Paleoselachii, of the Subclass Elasmobranchii.
• Batoids are in the fish subclass Elasmobranchii along with sharks, as they are closely related.
• Instead, skates and rays are a monophyletic superorder within Elasmobranchii that shares a common ancestor with the selachians.
• Sharks constitute the superorder "'Selachimorpha "'in the subclass Elasmobranchii in the class Chondrichthyes.
• "' Neoselachii "'are a grouping of cartilaginous fishes in subclass Elasmobranchii of class Chondrichthyes.
• Fossil teeth comprise much of the fossil record of the Elasmobranchii, extending back to hundreds of millions of years.
• It consists of bones of mammals from the Pleistocene epoch of the Coenozoic era and shells of elasmobranchii and gastropods.
• Sharks, rays and skates are the other members of the cartilaginous fish group and are grouped under the subclass Elasmobranchii.
• This bottleneck may have separated the bull shark from the rest of the elasmobranchii subclass and favored the genes for an osmoregulatory system.
• The visual system of the shovelnose is more extensive and developed than other Elasmobranchii, with multiple large projections connecting to the brain.
• "' William Toby White "'is an Australian skate species ( subclass Elasmobranchii ) through morphological and molecular systematics.
• The Elasmobranchii also include polyphyletic group : in particular, some sharks are more closely related to rays than they are to some other sharks.
• Chondrichthyes is a monophyletic group divisible into two sister taxa, the Elasmobranchii and Holocephali, and the extant chondrichthyans are derivable from Mesozoic forms.
• "Schizorhiza " is unique among all " saw-snouted " Elasmobranchii in that its rostral teeth did not fall off as they are replaced.
• Mantas are among the Elasmobranchii ( sharks and rays ), in the superorder Batoidea ( rays and skates ) and the order Myliobatiformes ( stingrays and relatives ).
• Members of the elasmobranchii subclass have no swim bladders, five to seven pairs of gill clefts opening individually to the exterior, rigid dorsal fins, and small placoid scales.
• "' Hybodontiformes "', also called hybodonts, are an extinct subset of Elasmobranchii ( sharks, rays ) which existed from the Devonian to the Miocene.
• It was assigned to Cladoselachii by Goto et al . ( 1988 ); to Elasmobranchii by Williams ( 1998 ); and to Chondrichthyes by Sepkoski in 2002 and by Maisey in 2008.
• He is most famous for the discovery of the so-called Ampullae of Lorenzini, special electromagnetic sense organs possessed by the Elasmobranchii ( sharks and rays ), which are located in front of the head and form a network of canals filled with gel.
• From LUND, R . ( 1974 ) Stethacanthus altonensis ( Elasmobranchii ) from the Bear Gulch Limestone of Montana . pdf ( " [ # File : Drawing of " Stethacanthus altonensis ", M . V . 2830, first dorsal fin and spine.