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Fossilized Stingray Teeth

$5.00

These fossils are fragments of teeth plates of prehistoric stingrays. Stingrays have many rows of these jagged crushing plates on the upper and lower jaw. Rows of these plates can cover the entire interior of their mouth. They feed by sucking up thier prey like a vacuum from the sea floor and mashing them between the plates.

Stingrays, along with their shark and skate relatives, are completely cartilaginous, which means they have no bones.

The teeth are composed of calcium but are not fused to the jaw.

These specimens are likely from the Miocene era, which occurred around 15 million years ago.

 

The stingray teeth shown in the images are an average representation of what you could receive. 

You'll receive one gem jar with a few fossilized stingray teeth.

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STINGRAYS

Stingrays are a group of sea rays, which are cartilaginous fish related to sharks. They are classified in the suborder Myliobatoidei of the order Myliobatiformes and consist of eight families: Hexatrygonidae (sixgill stingray), Plesiobatidae (deepwater stingray), Urolophidae (stingarees), Urotrygonidae (round rays), Dasyatidae (whiptail stingrays), Potamotrygonidae (river stingrays), Gymnuridae (butterfly rays), and Myliobatidae (eagle rays).

Stingrays are common in coastal tropical and subtropical marine waters throughout the world. Some species, such as Dasyatis thetidis, are found in warmer temperate oceans, and others, such as Plesiobatis daviesi, are found in the deep ocean. The river stingrays, and a number of whiptail stingrays (such as the Niger stingray), are restricted to fresh water. Most myliobatoids are demersal (inhabiting the next-to-lowest zone in the water column), but some, such as the pelagic stingray and the eagle rays, are pelagic.

There are about 220 known stingray species organized into ten families and 29 genera. Stingray species are progressively becoming threatened or vulnerable to extinction, particularly as the consequence of unregulated fishing. As of 2013, 45 species have been listed as vulnerable or endangered by the IUCN. The status of some other species is poorly known, leading to their being listed as data deficient.

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. The teeth are modified placoid scales that are regularly shed and replaced. In general, the teeth have a root implanted within the connective tissue and a visible portion of the tooth, is large and flat, allowing them to crush the bodies of hard shelled prey. Male stingrays display sexual dimorphism by developing cusp, or pointed ends, to some of their teeth. During mating season, some stingray species fully change their tooth morphology which then returns to baseline during non-mating seasons.

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CUSTOMER REVIEWS

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K.R.
Fossils for my nephew

Super awesome fossil! Cannot wait to buy more for my nephews. Gave it to one of my nephews as a gift and he loved it! Speedy delivery too. Thanks!

Customer Reviews

Based on 1 review
100%
(1)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
K
K.R.
Fossils for my nephew

Super awesome fossil! Cannot wait to buy more for my nephews. Gave it to one of my nephews as a gift and he loved it! Speedy delivery too. Thanks!

Fossilized Stingray Teeth

Fossilized Stingray Teeth

$5.00
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