{"product_id":"07789-top-rare-unidentified-mosasaur-premaxillary-nose-bone-cretaceous","title":"07789 - Top Rare Unidentified Mosasaur Premaxillary Nose Bone Cretaceous","description":"\u003cp\u003ePrecious premaxillary specimen. \u003cspan\u003eThis specimen has been stabilized on its surface by Paraloid B-72 to ensure its stability and consistency. This process does not affect neither the color nor any of the characteristics. It simply makes the specimen better preserved in the long term.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eIn the international market is very common to find \u003cem\u003eMosasaurus\u003c\/em\u003e rests coming from the phosphate quarries of the Upper Cretaceous of the Ouled Abdoun Basin (Morocco). \u003cbr\u003e\u003cbr\u003eThis 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. \u003cbr\u003e\u003cbr\u003eIn these sites there are numerous different species of \u003cem\u003eMosasaurus\u003c\/em\u003e described in the enormous assemblage of giant marine reptiles that reigned the seas during the Cretaceous. \u003cbr\u003e\u003cbr\u003eThe 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. \u003cbr\u003e\u003cbr\u003eMost of the research carried out on these marine reptiles from Morocco have been performed by French researchers. \u003cbr\u003e\u003cbr\u003e\u003cspan\u003eNext we list the different \u003c\/span\u003e\u003cem\u003eMosasaur\u003c\/em\u003e\u003cspan\u003e species which have been recognised in the phosphate rocks in North Africa: \u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003e-\u003c\/span\u003e\u003cem\u003eHalisaurus aramborgi (Bardet et al., 2005) \u003c\/em\u003e\u003cbr\u003e\u003cem\u003e-Halisaurus walkeri (Lingham-Solier, 1998) \u003c\/em\u003e\u003cbr\u003e\u003cem\u003e-Prognathodon sp (Dollo, 1889) \u003c\/em\u003e\u003cbr\u003e\u003cem\u003e-Prognathodon anceps (Leiodon anceps) \u003c\/em\u003e\u003cbr\u003e\u003cem\u003e-Prognathodon solvay (Dollo, 1889) \u003c\/em\u003e\u003cbr\u003e\u003cem\u003e-Prognathodon currii (Christiansen \u0026amp; Bonde, 2002) \u003c\/em\u003e\u003cbr\u003e\u003cem\u003e-Eremiasaurus heterodontus (LeBlanc et al., 2012)\u003cbr\u003e\u003c\/em\u003e\u003cspan\u003e-\u003c\/span\u003e\u003cem\u003eMosasaurus beaugei (Arambourg, 1952) \u003cbr\u003e\u003c\/em\u003e\u003cem\u003e-Mosasaurus hoffmanni (Mantell, 1829) \u003c\/em\u003e\u003cbr\u003e\u003cem\u003e-Tylosaurus (Marsh, 1872) \u003c\/em\u003e\u003cbr\u003e\u003cem\u003e-Platecarpus ptychodon (Arambourg, 1954) \u003c\/em\u003e\u003cbr\u003e\u003cem\u003e-Globidens phosphaticus (Bardet et al., 2005) \u003c\/em\u003e\u003cbr\u003e\u003cem\u003e-Carinodens belgicus (Bardet et al., 2005)\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eThe 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.\u003cbr\u003e\u003cbr\u003eThe 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.\u003cbr\u003e\u003cbr\u003eNext you can visit a link with very interesting information about this sedimentarian basin rich in fossil vertebrates: Ouled Abdoun Basin\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cem\u003eHalisaurus arambourgi\u003c\/em\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003eSYSTEMATIC PALAEONTOLOGY\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003eSQUAMATA OPPEL,1811\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003eMOSASAURIDAE GERVAIS, 1853\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003eHALISAURINAE BARDET \u0026amp; PEREDA SUBERBIOLA, 2004\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003eNEW TAXON HALISAURUS MARSH, 1869\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eType species:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eHalisaurus platyspondylus\u003c\/em\u003e\u003cspan\u003e \u003c\/span\u003eMarsh, 1869, Maastrichtian of New Jersey, USA (Holmes \u0026amp; Sues, 2000).\u003cbr\u003eReferred species: Halisaurus ortliebi (Dollo, 1889), Maastrichtian of Belgium (Lingham-Soliar,1996).\u003cbr\u003e\u003cbr\u003eHALISAURUS ARAMBOURGI BARDET \u0026amp; PEREDA SUBERBIOLA, SP. NOV. 2004\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSources: \u003c\/span\u003eThe Fossil Forum - Moroccan Mosasaurs - General Fossil Discussion\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eEtymology:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIn honour of the late Prof. Camille Arambourg, for his pioneering work on fossil vertebrates from the phosphates of North Africa and the Middle East.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eType locality and horizon:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGrand Daoui area, near Khouribga, central Morocco; phosphates of the Oulad Abdoun Basin, upper Couche III, Late Cretaceous, Late Maastrichtian (Cappetta, 1987).\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eDiagnosis:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSmall mosasaurid (adult total length 3,4 m). External nares extend from 6th to 12th maxillary teeth, V -shaped anteriorly and U-shaped posteriorly; prefrontal contributes moderately to margin of naris and possesses small anterior supraorbital ridge; frontal with median dorsal ridge extending on two-thirds of the bone length, and two anterior oblique ridges; parietal with triangular table ornamented by transverse undulated ridges and a lenticular foramen, the anterior end of which is located half its length from the frontal suture; quadrate with a vertical oval stapedial notch; pterygoid with short palatine process at about 45° relative to the ectopterygoid process; dental formula: 2 premaxillary, at least 16 maxillary and 12 pterygoid teeth,19 dentary teeth; teeth very fine and sharp, abruptly posteriorly recurved, with a circular basal cross-section, two carinae and enamel ornamented by minute ridges.\u003cbr\u003e\u003cbr\u003eThe informations cited here come from the publication :\u003cbr\u003e\u003cbr\u003eA new species of Halisaurus from the Late Cretaceous phosphates of Morocco, and the phylogenetical relationships of the Halisaurinae (Squamata: Mosasauridae) 2004 NATHALIE BARDET`, XABIER PEREDA SUBERBIOLA, MOHAMED IAROCHENE, BAADI BOUYA and MBAREK AMAGHZAZ.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003ePublications\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e1996. The first description of Halisaurus (Reptilia Mosasauridae) from Europe, from the Upper Cretaceous of Belgium. Theagarten LINGHAM-SOLIAR.\u003cbr\u003e\u003cbr\u003eBAIRD, D. 1986a. Halisaurus and prognatodon. two uncommon mosasaurs from the Upper Cretaceous of New Jersey. The Mosasaur, 3 : 37-45.\u003cbr\u003e\u003cbr\u003eHALISAURUS (SQUAMATA: MOSASAURIDAE) FROM THE\u003cbr\u003eMAASTRICHTIAN OF ANGOLA\u003cbr\u003e\u003cbr\u003eLe mosasauride basal Halisaurus sternbergii du Cretace superieur du Kansas (Amerique du Nord): une revision du specimen type d'Uppsala\u003cbr\u003e\u003cbr\u003ePolcyn, M., Jacobs L., Schulp A., \u0026amp; Mateus O. (2007). Halisaurus (Squamata: Mosasauridae) from the Maastrichtian of Angola. Journal of Vertebrate Paleontology. 27(Suppl. to 3), 130A., Jan: Museu Lourinha, So Methodist Univ, Nat Hist Museum Maastricht\u003c\/p\u003e","brand":"Jurassic Dreams","offers":[{"title":"Default Title","offer_id":67996420440381,"sku":"mqx1794156300487","price":157.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1003\/5707\/9357\/files\/07789---top-rare-unidentified-mosasaur-premaxillary-nose-bone-cretaceous_1.jpg?v=1794156312","url":"https:\/\/curveseamfit.shop\/products\/07789-top-rare-unidentified-mosasaur-premaxillary-nose-bone-cretaceous","provider":"My Store","version":"1.0","type":"link"}