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Rhinoptera bonasus (Mitchill, 1815) - cownose stingray teeth & skeletal mouthparts (public display, Greater Cleveland Aquarium, Cleveland, Ohio, USA). I've seen fossil stingray teeth several times, but never understood them until now. The aquarium display shown above is the skeletal mouth remains of a modern cownose stingray.
Cownose ray teeth and mouthparts. Stingray teeth consist of interlocking bars (dental plates) that crush food. The cownose ray exhibits a durophagous diet, meaning it feeds upon hard-shelled organisms, such as mollusks , crustaceans , but they prefer scallops or clams , which have softer shells and are categorized as bivalves . [ 2 ]
The bizarre Lessiniabatis of Early Eocene Italy. Permineralized stingray teeth have been found in sedimentary deposits around the world as far back as the Early Cretaceous.The oldest known stingray taxon is "Dasyatis" speetonensis from the Hauterivian of England, whose teeth most closely resemble that of the extant sixgill stingray (Hexatrygon).
The sharpnose stingray (Telatrygon acutirostra) is a little-known species of stingray in the family Dasyatidae, found off southern Japan and in the East China Sea.With a rounded pectoral fin disc and a long, projecting snout, T. acutirostra resembles (and was historically confused with) the smaller pale-edged stingray (T. zugei).
Batomorphi is a clade of cartilaginous fishes, commonly known as rays, this taxon is also known as the superorder Batoidea, but the 5th edition of Fishes of the World classifies it as the division Batomorphi. [2]
The round ribbontail ray or blotched fantail ray, [1] (Taeniurops meyeni) is a species of stingray in the family Dasyatidae, found throughout the nearshore waters of the tropical Indo-Pacific, as well as off islands in the eastern Pacific.
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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 ...