00556 - Rare Beautiful 0.98 Inch Mosasaur (Halisaurus) Tooth
00556 - Rare Beautiful 0.98 Inch Mosasaur (Halisaurus) Tooth 00556 - Rare Beautiful 0.98 Inch Mosasaur (Halisaurus) Tooth 00556 - Rare Beautiful 0.98 Inch Mosasaur (Halisaurus) Tooth 00556 - Rare Beautiful 0.98 Inch Mosasaur (Halisaurus) Tooth 00556 - Rare Beautiful 0.98 Inch Mosasaur (Halisaurus) Tooth

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00556 - Rare Beautiful 0.98 Inch Mosasaur (Halisaurus) Tooth

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Species
Halisaurus, Marsh 1869 (mosasaur)
Age
Upper Cretaceous,Maastrichtian stage, (~66 Million Years)
Location
Oued Zem, Morocco
Formation
Ouled Abdoun Basin (Phosphate beds)
Size
25 mm   •    in
Weight
3 g   •    oz
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Description

Here we present this tooth of a rare genus of Mosasaurus. It is the genus Halisaurus, a small Mosasaurus that is also present in the Ouled Abdoun Basin. This genus is much more scarce than the remains of the genus Prognathodon. It does not have any type of restoration or repair. The tip is still very sharp. The quality of the enamel is very high due to the beautiful range of caramel brilliant hues. It does not have any product or treatment that has altered its original shine and color. Only the root is missing.

Here are some references to publications on this genus of Mosasaurus:

-A new species of Halisaurus from the Late Cretaceous phosphates of Morocco, and the phylogenetic relationships of the Halisaurinae (Squamata: Mosasauridae) 2004 NATHALIE BARDET`, XABIER PEREDA SUBERBIOLA, MOHAMED IAROCHENE, BAADI BOUYA and MBAREK AMAGHZAZ

-1996. The first description of Halisaurus (Reptilia Mosasauridae) from Europe, from the Upper Cretaceous of Belgium. Theagarten LINGHAM-SOLIAR.

-BAIRD, D. 1986a. Halisaurus and prognatodon. Two uncommon mosasaurs from the Upper Cretaceous of New Jersey. The Mosasaur, 3: 37-45.

-Polcyn, M., Jacobs L., Schulp A., & Matthew O. (2007). Halisaurus (Squamata: Mosasauridae) from the Maastrichtian of Angola. Journal of Vertebrate Paleontology. 27 (Suppl. To 3), 130A., Jan: Lourinha Museum, So Methodist Univ, Nat Hist Museum Maastricht

In the international market is very common to find Mosasaurus rests coming from the phosphate quarries of the Upper Cretaceous of the Ouled Abdoun Basin (Morocco). This quarries have been exploited since the beginning of the past century. Many sellers that sell this fossils do not make a good precise taxonomic identification work. In these sites there are numerous different species of Mosasaurus described in the enormous assemblage of giant marine reptiles that reigned the seas during the Cretaceous.

The main rich levels in these paleontological taxons are in the deeper stratigraphic levels of the sedimentarian filling of the Ouled Abdoun Basin. The age of these correspond to the Maastrichtian stage, 66 million years ago. Most of the research carried out on these marine reptiles from Morocco have been performed by French researchers.

Next we list the different Mosasaur species which have been recognised in the phosphate rocks in North Africa:

-Halisaurus aramborgi (Bardet et al., 2005)

-Halisaurus walkeri (Lingham-Solier, 1998)

-Prognathodon sp (Dollo, 1889)

-Prognathodon anceps (Leiodon anceps)

-Prognathodon solvay (Dollo, 1889)

-Prognathodon currii (Christiansen & Bonde, 2002)

-Eremiasaurus heterodontus (LeBlanc et al., 2012)

-Mosasaurus beaugei (Arambourg, 1952)

-Mosasaurus hoffmanni (Mantell, 1829)

-Tylosaurus (Marsh, 1872)

-Platecarpus ptychodon (Arambourg, 1954)

-Globidens phosphaticus (Bardet et al., 2005)

-Carinodens belgicus (Bardet et al., 2005)

The Ouled Abdoun Basin (or Khouribga Basin), located in the central sector of Morocco, is an enormous sedimentarian basin represented mostly by a vast filling of phosphate sediments. Apart from having a relevant raw material to be extracted, it has a series of very important paleontological sites in which amazing assemblages from big and small marine vertebrates are present.

The basin has a so great continuity in its stratigraphic record that both the Upper Cretaceous as well as the two first epochs of the Paleogene (Paleocene and Eocene) can be studied. The main assemblage of vertebrate fossils of the Paleogene sector present there is composed by sharks, fish, turtles, marine snakes, rays, crocodiles, other types of reptiles and even marine birds. In the Cretaceous part we can add Mosasaurs, Pterosaurs and Plesiosaurs. 


Next you can visit a link with very interesting information about this sedimentarian basin rich in fossil vertebrates: Ouled Abdoun Basin

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