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The mouth of the stingray is located on the ventral side of the vertebrate. Stingrays exhibit hyostylic jaw suspension, which means that the mandibular arch is only suspended by an articulation with the hyomandibula. This type of suspensions allows for the upper jaw to have high mobility and protrude outward. [11]
The common stingray has a plain coloration and mostly smooth skin. The common stingray has been reported to reach a width of 1.4 m (4.6 ft) and a length of 2.5 m (8.2 ft), though a width of 45 cm (18 in) is more typical. [8] The flattened pectoral fin disc is diamond-shaped and slightly wider than it is long, with narrowly rounded outer corners ...
The longnose stingray has a diamond-shaped pectoral fin disc slightly wider than long, with outer corners forming approximately right angles and gently concave anterior margins converging to an obtuse, moderately projecting snout. The mouth is curved with a median projection in the upper jaw that fits into an indentation in the lower jaw.
The common stingaree (Trygonoptera testacea) is a species of stingray in the family Urolophidae.The most abundant ray in inshore waters off eastern Australia, it generally inhabits estuaries, sandy flats, and rocky reefs from the shore to a depth of 60 m (200 ft).
The Atlantic stingray (Hypanus sabinus) is a species of stingray in the family Dasyatidae, common along the Atlantic coast of North America from Chesapeake Bay to Mexico, including brackish and freshwater habitats. It may be distinguished from other stingrays in the area by its relatively elongated snout. [3]
For over a hundred million years, the stingray has roamed the world's oceans as an almost mythological animal: extraordinarily graceful, yet potentially lethal.
Stingray stings nearly all occur on an individual’s feet and lower legs. Although such an injury is painful, it is not considered to be life-threatening. However, if a sting were to occur in the ...
A 2001 phylogenetic analysis by Lisa Rosenberger, based on morphological characters, found that the southern stingray (H. americanus) of the western Atlantic is the sister species of the longtail stingray. These two species may have evolutionarily diverged with the formation of the Isthmus of Panama (c. 3 Ma). [3]