jnoun11 Posted March 23, 2013 Share Posted March 23, 2013 Hi mosasaurs lovers, I looked around on different american fossils web sites , and I found, is nowhere a description or list about different species of Mosasaurs from Morocco . So I'll try humbly to fix it . Feel free to correct me if you see something wrong. The Moroccan phosphate history began in 1921 , Moroccan phosphate mines operate three layers of phosphates . Level 1 : Ypresian phosphate bed Level 2 : Thanetian phosphate bed Level 3 : Maestrichian phosphate bed Level 4 : Maestrichian grey phosphate at Sidi-Chenan quarry, ben guerir and youssoufia Level 5 : Maestrichian, grey phosphate,white bones: ben guerir and youssoufia level 6: Maestrichian, grey phosphate,white bones: ben guerir and youssoufia Most of the material on a market belong to oued zem and sidi -daoui zone; even though you will find them under Khouribga denomination, nothing comes from Khouribga... Of course, mosasaurs belong to the level 3, and 4 different species are studied by scientists of the French Museum of Natural History in Paris . Today the last record of different mosasaurs species is at list 18 and probably 20. (personal opinion ) Listed like below : †Halisaurus. arambourgi .(Bardet, Pereda Suberbiola, Iarochène, Bouya & Amaghzaz, 2005) †Halisaurus.sp not described yet †Halisaurus walkeri .(Lingham-Solier, 1998) ( i used this name temporarily, until one studie about this mosasaur show-up ) †Prognathodon sp Dollo, 1889 †thalassotitan atrox 2022 ex †Prognathodon anceps ex leiodon anceps slender form massive form perhaps sexual dimorphism ( personal opinion ) †Prognathodon solvayi Dollo, 1889 †Prognathodon hudae kaddumi 2009 †Prognathodon. currii (Christiansen & Bonde, 2002) †Eremiasaurus heterodontus , gen. et sp. nov sp ( AR. H. LeBlanc, M. W. Caldwell, and N. Bardet. 2012) †“Mosasaurus" baugei Arambourg 1954 ( Mosasaurus beaugei Arambourg, 1952 (Squamata, Mosasauridae) from the Late Cretaceous phosphates of Morocco Nathalie Bardet , Xabier Pereda Suberbiola , Mohamed Iarochene , Fatima Bouyahyaoui , Baadi Bouya , Mbarek Amaghzaz . 2004 ) †Mosasaurus hoffmanni Mantell, 1829 †hainosaurus boubker, 2022 slender form long premaxillary like tylosaurus proriger massive form short premaxillary like hainosaurus personal constatation † Stelladens mysteriosus (Nicholas R. Longrich , Nour-Eddine Jalil , Xabier Pereda-Suberbiola and Nathalie Bardet 2023) † Gavialimimus almaghribensis caldwell et al ,2020 ex: Platecarpus ptychodon Arambourg 1954 †Globidens. phosphaticus (Bardet, Pereda Suberbiola, Iarochène, Amalik & Bouya, 2005) †Carinodens belgicus ( N. Bardet, X. Pereda Suberbiola, M. Iarochène, M. Amalik, and B. Bouya. 2005) †Carinodens minalmamar. (A.S. Schulp, N. Bardet& B. Bouya. 2009) †Harranasaurus khuludae. (kaddumi.2009) †Globidens simplex (LeBlanc, Aaron. (2019) †Xenodens calminechari (Longrich, N.R.; Bardet, N.; Schulp, A. S.; Jalil, N (2021)) 20 Link to post Share on other sites
jnoun11 Posted March 23, 2013 Author Share Posted March 23, 2013 (edited) HALISAURUS ARAMBOURGI SYSTEMATIC PALAEONTOLOGYSQUAMATA OPPEL,1811 MOSASAURIDAE GERVAIS, 1853HALISAURINAE BARDET & PEREDA SUBERBIOLA, 2004NEW TAXON HALISAURUS MARSH, 1869 Type species: Halisaurus platyspondylus Marsh, 1869, Maastrichtian of New Jersey, USA (Holmes& Sues, 2000).Referred species: Halisaurus ortliebi (Dollo, 1889), Maastrichtian of Belgium (Lingham-Soliar,1996).HALISAURUS ARAMBOURGI BARDET & PEREDA SUBERBIOLA, SP. NOV. 2004 Etymology: In honour of the late Prof. Camille Arambourg, for his pioneering work on fossil vertebrates from the phosphates of North Africa and the Middle East. Type locality and horizon: Grand Daoui area, near Khouribga, central Morocco; phosphates of the Oulad Abdoun Basin, upper Couche III, Late Cretaceous, Late Maastrichtian (Cappetta, 1987). Diagnosis: Small 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. the informations cited here come from the publication : A new species of Halisaurus from the Late Cretaceous phosphates of Morocco, and the phylogenetical relationships of the Halisaurinae (Squamata: Mosasauridae) 2004NATHALIE BARDET`, XABIER PEREDA SUBERBIOLA, MOHAMED IAROCHENE, BAADI BOUYA and MBAREK AMAGHZAZ publications 1996. The first description of Halisaurus (Reptilia Mosasauridae) from Europe, from the Upper Cretaceous of Belgium. Theagarten LINGHAM-SOLIAR. www.vliz.be/imisdocs/publications/255692.pdf BAIRD, D. 1986a. Halisaurus and prognatodon. two uncommon mosasaurs from the Upper Cretaceous of New Jersey. The Mosasaur, 3 : 37-45. http://docentes.fct.unl.pt/sites/default/files/omateus/files/polcyn_et_al_mateus2007_halisaurus_angola_svpmeet.pdf http://yadda.icm.edu.pl/yadda/element/bwmeta1.element.elsevier-5c5d647c-5d3f-34fb-9b64-6126c01cc420 Polcyn, M., Jacobs L., Schulp A., & 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 https://en.wikipedia.org/wiki/Halisaurinae complete skeleton skull right lower jaw right maxillary right and left palate ( never published) right and left mandibular Edited April 24, 2016 by jnoun11 17 Link to post Share on other sites
jnoun11 Posted March 23, 2013 Author Share Posted March 23, 2013 (edited) pluridens serpentis SYSTEMATIC PALAEONTOLOGY SQUAMATA, OPPEL, 1811 MOSASAURIDAE , GERVAIS, 1853 HALISAURINAE BARDET & PEREDA SUBERBIOLA ,2004 NEW TAXON HALISAURUS MARSH,1869 Type species: Pluridens walkeri , ( Lingham-Soliar , 1998 ) Maastrichtian of illulemedden bassin , NIGER species: P. calabaria Longrich, 2016 P. serpentis Longrich, 2021 P. walkeri Lingham-Soliar, 1998 (type) Locality: Sidi chenane, Morocco upper maestrichian level 3 etymology: after Cyril A. Walker to mark is contributions as a vertebrate paleontologist at the natural history museum of London ( BMNH) and is generosity to uninitiated student and to the famous alike. publications Konishi, Takuya; Caldwell, Michael W.; Nishimura, Tomohiro; Sakurai, Kazuhiko; Tanoue, Kyo (2015). "A new halisaurine mosasaur (Squamata: Halisaurinae) from Japan: the first record in the western Pacific realm and the first documented insights into binocular vision in mosasaurs". Journal of Systematic Palaeontology: 1–31. doi:10.1080/14772019.2015.1113447. T. Lingham-Soliar. 1998. A new mosasaur Pluridens walkeri from the Upper Cretaceous, Maastrichtian of the Iullemmeden Basin, southwest Niger. Journal of Vertebrate Paleontology 18(4):709-707. Nicholas R. Longrich (2016). "A new species of Pluridens (Mosasauridae: Halisaurinae) from the upper Campanian of Southern Nigeria". Cretaceous Research. in press. doi:10.1016/j.cretres.2016.03.013. Lindgren J, Siverson M. 2005. Halisaurus sternbergii, a small mosasaur with an intercontinental distribution. Journal of Paleontology 79 (4): 763–773. Michael J. Polcyn, Johan Lindgren, Nathalie Bardet, Dirk Cornelissen, Louis Verding, and Anne S. Schulp (2012) Description of new specimens of Halisaurus arambourgi Bardet & Pereda Suberbiola, 2005 and the relationships of Halisaurinae. Bulletin de la Société Géologique de France 183:123-136 doi:10.2113/gssgfbull.183.2.123 http://bsgf.geoscienceworld.org/content/183/2/123.abstract Holmes, Robert B.; Sues, Hans-Dieter (2000). "A partial skeleton of the basal mosasaur Halisaurus platyspondylus from the Severn Formation (Upper Cretaceous: Maastrichtian) of Maryland" (PDF). Journal of Paleontology 74 (2): 309–16. University of Cincinnati (8 December 2015). "Unique Mosasaur fossil discovered in Japan". ScienceDaily. Retrieved 12 December 2015 Pluridens serpentis, a new mosasaurid (Mosasauridae: Halisaurinae) from the Maastrichtian of Morocco and implications for mosasaur diversity(2021): https://www.sciencedirect.com/science/article/abs/pii/S0195667121001294 Nicholas R.Longrich, NathalieBardet, fatimaKhaldoune, Oussama KhadiriYazami, Nour-EddineJalil https://www.nicklongrich.com/blog/pluridens-and-the-insane-incredible-neverending-diversity-of-moroccan-mosasaurs diagnosis : moderatly large mosasaur. very long.slender dentary,anterior half cross section almost circular extending to tip. 28 -plus teeth in dentary,close set. tooth crown short.the teeth looking like Halisaurus Arambourgi but bigger and serrated on cutting edge. 21-22 teeth on a maxillary 28 teeth on a dentary,10 teeth on pterygoid. . It is referred to Pluridens based on the elongate and robust jaws, small teeth, and specialized tooth implantation. Pluridens is referred to Halisaurinae based on the posteriorly expanded premaxilla, long premaxilla-maxilla suture, broad premaxillary facet on the maxilla, closed otic notch, and small, striated, hooked teeth. The orbits are reduced relative to other halisaurines while the snout is robust and flat with a broad, rounded tip. The jaws bear numerous small, hooked, snake-like teeth. this very rare mosasaur is now described in a moroccan phosphates all the skull mesured the same size : 32 inches . skull from top same skull from right comparaison between jugal of halisaurus arambourgi ( top), and pluridens serpentis (bottom) the jugal of pluridens serpentis is very similar than platecarpus ptychodon tooth of pluridens serpentis ,you can see the serration on cutting edge Edited May 14, 2021 by jnoun11 update 17 Link to post Share on other sites
donckey Posted March 23, 2013 Share Posted March 23, 2013 Hi Jnoun11, Thanks for sharing this information and showing these pictures. Hope that there will be more to come I find it difficult to get good information for IDing mosafossils. For instance how many teeth different species had in there jaws. a question: I do not see "Prognothodon anceps" in your list. Is there an other name for it or .....??? Peter Link to post Share on other sites
jnoun11 Posted March 24, 2013 Author Share Posted March 24, 2013 hi peter i m a little bit busy right now, but more will come soon. feel free to ask questions ,so i will try to answer to it when i will post more. proganthodon anceps is nomen dubium and the new name is : prognathodon .sp . for the numbers of teeth of each species , i will try to answer soon, today is sunday and i have to go digging in a new miocene formation with megaselachus and other miocenes sharks. ...i will post more tomorow regards jnoun 1 Link to post Share on other sites
Paleoworld-101 Posted March 24, 2013 Share Posted March 24, 2013 (edited) Thanks for the info. I have a Mosasaurus tooth identified as 'Mosasaurus anceps' from Morocco and upon not seeing it on your list i went to wikipedia and it doesn't seem to be an actual species of Mosasaurus. Have i been misled all these years? EDIT- just saw the above posts, so it should be 'Prognathodon anceps' but even that is not scientifically recognised?? So there is no anceps species? Edited March 24, 2013 by Paleoworld-101 1 Link to post Share on other sites
jnoun11 Posted March 24, 2013 Author Share Posted March 24, 2013 (edited) thalassotitan atrox n gen. n.sp SYSTEMATIC PALEONTOLOGY Order SQUAMATA Oppell, 1811 Family MOSASAURIDAE Gervais, 1853 Subfamily MOSASAURINAE Williston, 1897 Genus PROGNATHODON Dollo, 1889 diagnosis from the publication : Thalassotitan atrox, a giant predatory mosasaurid (Squamata) from the upper Maastrichtian phosphates of Morocco .Diagnosis. Large mosasaurid, Premaxilla tip short and blunt. Interlocking contacts between premaxilla and maxilla. Maxilla deep, ventral margin convex. Interdigitating joint between maxilla and prefrontal formed by a series of tongue-and-groove joints, with margins of the joint interdigitating. Prefrontal broadly overlaps onto frontal. Prefrontal-postorbitofrontal excluding frontal from orbital margin. Frontal short, broad, strongly constricted anteriorly and strongly concave at contact with parietal anterolateral wings; postorbital processes displaced anteriorly; large posteromedial processes wrapping around parietal foramen. Jugal broad and robust where its contacts the maxilla. Quadrate massive with large, fused supra- and infrastapedial processes below median part of the shaft. Tooth crowns with anastomosed ornamentation of apex and serrated anterior and posterior carinae. the most common specie in moroccan phosphates. skull from top right same skull from right showing the pathology complete skeleton with the tail mounted hypocercal position close-up of the rignt dentary pathology on left maxillary sclerotic ring right dentary nasal front view pathology on left maxillary internet links: https://www.sciencedirect.com/science/article/abs/pii/S0195667122001793 https://nmgs.nmt.edu/publications/guidebooks/downloads/56/56_p0389_p0393.pdf http://www.academia.edu/388824 /A_new_species_of_Prognathodon_Squamata_Mosasauridae_from_the_Maastrichtian_of_Angola_and_the_affinities_of_the_mosasaur_genus_Liodon http://www.tandfonline.com/doi/abs/10.1080/02724634.2011.601714#preview http://en.wikipedia.org/wiki/Mosasaurus https://www.app.pan.pl/article/item/app48-397.html publications: Baird, Donald (1986): Halisaurus and Prognathodon, two uncommon Mosasaurs from the Upper Cretaceous of New Jersey. In: The Mosasaur, Vol. 3, S. 37–45. Bardet et al. (2012) A skull fragment of the mosasaurid Prognathodon cf. sectorius from the Late Cretaceous of Navarre (Basque-Cantabrian Region). Bull. Soc. géol. France, 2012, t. 183, no 2, pp. 117-121. Buchy, Marie-Céline; Frey, Eberhard; Wolfgang Stinnesbeck & José Guadalupe López-Oliva (2007): Cranial anatomy of a Maastrichtian (Upper Cretaceous) mosasaur (Squamata, Mosasauridae) from north-east Mexico. In: Revista Mexicana de Ciencas Geológicas Vol. 24, N. 1, S. 89–103. Buffetaut & Bardet (2012) The mosasaurid (Squamata) Prognathodon in the Maastrichtian (Late Cretaceous) of the Cotentin Peninsula (Normandy, northwestern France). Bull. Soc. géol. France, 2012, t. 183, no 2, pp. 111-115. Christiansen, Per &. Niels Bonde (2002): A new species of gigantic mosasaur from the Late Cretaceous of Israel. In: Journal of Vertebrate Paleontology 22 (3), S. 629-644. Dortangs, Rudi W.; Schulp, A.; Mulder, E.; Jagt, J. W. M.; H. Peeters & D. de Graaf (2002): A large new mosasaur from the Upper Cretaceous of the Netherlands. In: Geologie en Mijnbouw, 81(1), S. 1-8. Grigoriev (2013) Redescription of Prognathodon lutugini (Squamata, Mosasauridae). Proceedings of the Zoological Institute RAS, Vol. 317, No. 3, 2013, рр. 246–261 Kass, Michael S. (1999): Prognathodon stadtmanni: (Mosasauridae) a new species from the Mancos Shale (Lower Campanian) of Western Colorado. In: Vertebrate Paleontology in Utah, S. 275–294. Campanian and Maastrichtian mosasaurid reptiles from central Poland Marcin Machalski, John W.M. Jagt, Rudi W. Dortangs, Eric W.A. Mulder, and Andrzej Radwański . Acta Palaeontologica Polonica 48 (3), 2003: 397-408 Konishi, T., D. Brinkman, J. A. Massare & M. W. Caldwell (2011) New exceptional specimens of Prognathodon overtoni (Squamata, Mosasauridae) from the upper Campanian of Alberta, Canada, and the systematics and ecology of the genus. In: Journal of Vertebrate Paleontology 31(5), S. 1026-1046. Lindgren & Schulp (2010) New material of Prognathodon (Squamata: Mosasauridae), and the mosasaur assemblage of the Maastrichtian of California, U.S.A. Journal of Vertebrate Paleontology 30(5):1632-1636. Lingham-Soliar, Theagarten &. Dirk Nolf (1989): The mosasaur Prognathodon (Reptilia, Mosasauridae) from the Upper Cretaceous of Belgium. In: Bulletin de l'Institut Royal des Sciences Naturelles de Belgique, Sciences de la Terre 59, S. 137-190. Lucas, Spencer G.; Ikejiri, Takehito; Maisch, Heather; Thomas Joyce & Gary L. Gianniny (2005): The mosasaur Prognathodon from the Upper Cretaceous Lewis Shale near Durango, Colorado and the distribution of Prognathodon in North America. In: 56th Field Conference Guidebook, Geology of the Chama Basin, S. 389–394. Russell, D. A. 1967. Systematics and morphology of American mosasaurs (Reptilia, Sauria). Peabody Museum of Natural History, Yale University, Bulletin 23:1–241. Schulp, Anne S.; Michael J. Polcyn; Octávio Mateus; Louis L. Jacobs & Maria Luísa Morais (2008): A new species of Prognathodon (Squamata, Mosasauridae) from the Maastrichtian of Angola, and the affinities of the mosasaur genus Liodon. In: Proceedings of the Second Mosasaur Meeting, S. 1–12. Nicholas R. Longrich, Nour-Eddine Jalil, Fatima Khaldoune, Oussama Khadiri Yazami, Xabier Pereda-Suberbiola, Nathalie Bardet, Thalassotitan atrox, a giant predatory mosasaurid (Squamata) from the upper Maastrichtian phosphates of Morocco, Cretaceous Research,Volume 140,2022,105315,ISSN 0195-6671, Edited November 2, 2022 by jnoun11 11 Link to post Share on other sites
donckey Posted March 24, 2013 Share Posted March 24, 2013 jnoun, Great, keep showing us so we can learn Peter Link to post Share on other sites
jnoun11 Posted March 24, 2013 Author Share Posted March 24, 2013 (edited) Prognathodon solvayi SYSTEMATIC PALEONTOLOGYOrder SQUAMATA Oppell, 1811Family MOSASAURIDAE Gervais, 1853Subfamily MOSASAURINAE Williston, 1897Genus PROGNATHODON Dollo, 1889 *Prognathodon solvayi = Prognathosaurus solvayi note: This specimen is actually unique and didn t exist officially in Morocco skull close-up of teeth type of prognathodon solvayi Edited September 17, 2014 by jnoun11 9 Link to post Share on other sites
donckey Posted March 24, 2013 Share Posted March 24, 2013 Jnoun, Are those fossils yours? Did you find them yourself, Are they in a museum? Like to know the backgroundstory A few month ago I posted a peace of Mosaskul for ID. Samir and Fiore were so kind to give me an ID. It looked to be "Prognathon anceps" , In musea I saw Mosa called also Anceps. For me it is important to have the most recent name of my Mosa's so will you please look at the pictures and say what you think of it? The front teeth, middle teeth and back teeth differ a lot in shape and root.The front ones have only one sharp edge (innerside) thanks Peter The front teeth, middle teeth and back teeth differ a lot in shape and root.The front ones have only one sharp edge (innerside) 5 Link to post Share on other sites
Down under fossil hunter Posted March 24, 2013 Share Posted March 24, 2013 Awesome work! This has been a really good read. Considering how almost every collector has a mosasaur fossil of some type it is great to be able to go back and correct some misidentified specimens and see what other mosasaurs were around at this time. Link to post Share on other sites
jnoun11 Posted March 25, 2013 Author Share Posted March 25, 2013 (edited) Jnoun, Are those fossils yours? Did you find them yourself, Are they in a museum? Like to know the backgroundstory A few month ago I posted a peace of Mosaskul for ID. Samir and Fiore were so kind to give me an ID. It looked to be "Prognathon anceps" , In musea I saw Mosa called also Anceps. For me it is important to have the most recent name of my Mosa's so will you please look at the pictures and say what you think of it? The front teeth, middle teeth and back teeth differ a lot in shape and root. The front ones have only one sharp edge (innerside) thanks Peter bija2013 013.gifmoso13 3nieuw.jpgmoso13 1.gif The front teeth, middle teeth and back teeth differ a lot in shape and root. The front ones have only one sharp edge (innerside) hi peter i will not speack about me, absolutly not interessant here . most of the specimens here represent 20 years of discovery and research, most of them are now in museum , or source of future scientific publications. i have not the pretention to said , i know everithing about mosasaurs ,but this topics is for sharing informations with people they have interest on mosasaurs. when somemone of you want correct what i published here, feel free please. i didnt want also to identifying every mosasaurs stuff buying or finding by the collectors is not the point of this topic. but normally with the informations showing here , everyone will be able to identifying is specimens . the vertebrate paleontology is a science and science evolved with time , i didnt see, in a fossils market until today, one mosasaur correctly mounted. is because the people they make buisness with this kind of material, are not scientist or they know customer can not see what is good or not... when someone buying vertebrates material , he must verifying at list, all process of the preparation, the field informations are important too, scientific papers from everywhere in a world must be read and understand before preparing some specimens. picture of the unprepared material must be requested . if the dealer are not able to show you that ,don t buy something. and for your mosasaur its to me: prognathodon.sp massive form maestrichian level 3 sidi-daoui . morocco regards jnoun Edited September 17, 2014 by jnoun11 3 Link to post Share on other sites
jnoun11 Posted March 25, 2013 Author Share Posted March 25, 2013 Prognathodon Curii SYSTEMATIC PALEONTOLOGY Order SQUAMATA Oppell, 1811 Family MOSASAURIDAE Gervais, 1853 Subfamily MOSASAURINAE Williston, 1897 Genus PROGNATHODON Dollo, 1889 Prognathodon currii, sp. nov. 2002 very rare mosasaur in Morocco ,most of the specimens belonging from the level 3 inf Sidi-chenan locality more rare in Khouribga in upper level 3. Never founded a complete skull until now...There seem to be 1 more specie in Couche IV- in sidi chenane , a currii-like species with slender teeth Etymology: currii, In honor of Dr. Philip J. Currie, Royal Tyrrell Museum of Paleontology, Drumheller, Alberta, Canada, for his fiftieth birthday (March 1999). publication : Bardet, N., Pereda Suberbiola, X., Iarochène, M., Amalik, M. & Bouya, B. , 2005. Durophagous Mosasauridae (Squamata) from the Upper Cretaceous phosphates of Morocco, with the description of a new species of Globidens. In: Schulp, A.S. & Jagt, J.W.M. (eds): Proceedings of the First Mosasaur Meeting. Netherlands Journal of Geosciences 84: 167-175 http://www.njgonline.nl/publish/articles/000252/article.pdf diagnose Teeth heavy with smooth enamel surfaces, tooth crowns nearly straight, conical with blunt apices, with bicarinate, occasionally serrated, carinae. 11 maxillary teeth, set on heavy, weakly striated pedicles. Dentary with nearly horizontal alveolar margin, 12 dentary teeth. Posterior horizontal inflection on mandibular retroarticular process. pterygoid teeth left dentary and left maxillary close up of dentary teeth detail of the serrations right maxillary 10 Link to post Share on other sites
jnoun11 Posted March 25, 2013 Author Share Posted March 25, 2013 (edited) Eremiasaurus heterodontus SYSTEMATIC PALEONTOLOGYREPTILIA Linnaeus, 1758SQUAMATA Oppel, 1811MOSASAURIDAE Gervais, 1853MOSASAURINAE Gervais, 1853EREMIASAURUS, gen. nov. Etymology—From the Greek eremia (masc., desert) and sauros (masc., lizard), referring to the arid climate in present day Morocco where this marine reptile was recovered. publication about LeBlanc, A.R.H., Caldwell, M.W. and Bardet, N. 2012. A new mosasaurine from the Maastrichtian (Upper Cretaceous) Phosphates of Morocco and its implications for mosasaurine systematics. Journal of Vertebrate Paleontology 32(1):82-104. Diagnosis—Apomorphies of taxon: pterygoid teeth become increasingly curved posteriorly; pronounced heterodonty, anteriormarginal teeth straight and conical, middle dentition composed of laterally compressed blade-like teeth with anteriorand posterior serrated carinae, posterior teeth asymmetrically expanded anteriorly, producing highly convex anterior surfacesin lateral view; tooth enamel surfaces smooth; upper and lower teeth interdigitate tightly in anterior region of the snout, leavinginterdental pitting of the bone between adjacent tooth crowns; interdental spaces decrease posteriorly in maxillae and dentaries. 13 teeth on a maxillary 16 teeth on a dentary . skull skull top view right quadrate Edited July 20, 2014 by jnoun11 9 Link to post Share on other sites
xonenine Posted March 25, 2013 Share Posted March 25, 2013 maybe when you are finished all this can go in one PDF, w only the pertinent information, if you wish Link to post Share on other sites
jnoun11 Posted March 25, 2013 Author Share Posted March 25, 2013 maybe when you are finished all this can go in one PDF, w only the pertinent information, if you wish hi xonenine i need more time , because i wish correct still some informations and ad more pictures detailled of different specimens. regard jnoun Link to post Share on other sites
jnoun11 Posted March 25, 2013 Author Share Posted March 25, 2013 (edited) Mosasaurus baugei systematic paleontology SQUAMATA Oppel, 1811 MOSASAURIDAE Gervais, 1853 MOSASAURINAE Gervais, 1853 Mosasaurus Conybeare, 1822 Type species: Mosasaurus hoffmanni Mantell, 1829 Diagnosis: see Lingham-Soliar (1995). Mosasaurus baugei Arambourg, 1952 etymology : from Alfred bauge ( 1878- 1935 ) general director of the O.C.P ( office cherifien des phosphates ) Diagnosis: large mosasaurid with 12-13 maxillary teeth; marginal teeth bearing 3-5 prisms on the labial surface and 8-9 on the lingal surface; The dentary terminates abruptly in front of the first tooth. It bears 14 or 15 teeth relatively common mosasaur in moroccan phosphates , very big at list 33 feets lenght. the teeth are often broken on a field , or crushed. skull complete skeleton close-up left maxillary external view left maxillary internal view left and right palate ( never published) contact between pre-frontal and palate close up of the maxillary teeth Edited April 14 by jnoun11 update 9 Link to post Share on other sites
piranha Posted March 25, 2013 Share Posted March 25, 2013 A Man and his Mosasaurs.... thanks for the great thread of taxonomic information! Link to post Share on other sites
donckey Posted March 26, 2013 Share Posted March 26, 2013 jnoun, I think you are a very interesting person indeed, giving us all that great information about mosasaurs from Morocco And I can't thank you enough for all your great information, so keep on going. It also gives a positive image of the Moroccan Mosa's, in contrast to the many (thrue) stories about fake and assembled fossils offered in the market. Is it possible, after you finished sharing all your mosasaurusinfo with us, to tell us something about mosasaurusteeth with serrations? Will not ask you for ID's again, but thanks for giving that ID anyway Peter Link to post Share on other sites
jnoun11 Posted March 26, 2013 Author Share Posted March 26, 2013 (edited) Mosasaurus hoffmanni systematic paleontology Class : Reptilia Linnaeus, 1758 Superorder : Squamata Oppel, 1811 Order: Sauria ( = Lacertilia Owen, 1842) McCartney,1802 Infraorder: Platynota DumCril & Bibron, 1836 Family: Mosasauridae Gervais, 1853 Subfamily: Mosasaurinae Williston, 1897 Genus : Mosasaurus Conybeare, 1822 Type species : Mosasaurus hoffmanni Mantell, 1829 1820 Lacerta gigantea Sommerring, 1829 Mosasaurus hoffmanni Mantell, 1829 Mosasaurus belgicus Holl, 1832 Mosasaurus camperi Meyer, . 1840-1845 Mosasaurus hoffmanni Mantell; Owen, 1869- 1870 Mosasaurus giganteus Cope, 1879 Mosasaurus camperi Meyer; Ubaghs, 1889 Mosasaurus camperi Meyer ;Dollo, 1924 Mosasaurus giganteus ; Dollo, 1942 Mosasaurus hoffmanni Mantell; Camp, 1959 Mosasaurus hoffmanni Mantell; Persson, 1967 Mosasaurus hoffmanni Mantell; Russell, 1980 Mosasaurus hoffmanni Mantell; Hamoir, 1983 Mosasaurus hoffmanni Mantell; Meijer, 1987 Mosasaurus hofmanni Mantell; Buffetaut 1989 Mosasaurus hofmanni Mantell; Lingham-Soliar & Nolf, 1991 Mosasaurus hoffmanni Mantell; Lingham-Soliar, diagnosis: Very large mosasaurine mosasaur.teeth bearing 1-2 prisms on the labial surface The maxilla : 14 large prismatic teeth with enormous barrelshaped bases. the dentary :14 prismatic teeth are present rare mosasaur in moroccan phosphates many time confused with Mosasaurus beaugei , more present in sidi-daoui maestrichian level 3. officially non present in morocco. links publications https://www.researchgate.net/publication/357836567_Occurrence_of_Mosasaurus_hoffmannii_Mantell_1829_Squamata_Mosasauridae_in_the_Maastrichtian_Phosphates_of_Morocco skull from left skull from top Edited April 12, 2022 by jnoun11 update 7 Link to post Share on other sites
jnoun11 Posted March 26, 2013 Author Share Posted March 26, 2013 Hainosaurus boubker systematic paleontology Order Squamata Family Mosasauridae Genus Tylosaurus Marsh, 1872b diagnosis : 13 teeth on dentary , 14 on maxillary , generally the teeth in Morocco are very dark braun ,the enamel is smooth, and no serrations. rare in sidi daoui couche 3 deposits, but frequent in sidi chenane. couche 3,4,5. publication: https://www.researchgate.net/publication/365437927_First_Record_of_a_Tylosaurine_Mosasaur_from_the_Latest_Cretaceous_Phosphates_of_Morocco skull lateral view skull top view left and right jugal nasal maxillary teeth left maxillary 8 Link to post Share on other sites
jnoun11 Posted March 26, 2013 Author Share Posted March 26, 2013 Gavialimimus almaghribensis systematic paleontology Reptilia Laurenti 1768 Squamata Oppel 1811 Mosasauridae Gervais 1852 Plioplatecarpinae Russell 1967 Platecarpus Cope 1869 Platecarpus ptychodon Arambourg , 1952 Gavialimimus almaghribensis, sp. nov,2020 Type species.Gavialimimus almaghribensis, sp. nov. publication: Catherine R. C. Strong , Michael W. Caldwell , Takuya Konishi & AlessandroPalci (2020): A new species of longirostrine plioplatecarpine mosasaur (Squamata: Mosasauridae)from the Late Cretaceous of Morocco, with a re-evaluation of the problematic taxon ‘Platecarpus’ptychodon , Journal of Systematic Palaeontology, DOI: 10.1080/14772019.2020.1818322 ARAMBOURG C. 1952. — Les vertébrés fossiles des gisements de phosphates (Maroc – Algérie – Tunisie). Notes et Mémoires du Service géologique du Maroc 92:1-372. .Diagnosis.As for the type and only species.Derivation of name.Meaning‘gharial mimic’, from theGallicized Hindi root‘gavial’and the Greek root‘mimus’, the genus name refers to morphological con-vergence between the holotype specimen and the extantgharial (Gavialis gangeticus), primarily regarding their distinctive longirostry and interlocking teeth. small teeth with bicarinate higly laterally compressed crowns, subequal lingal and labial surfaces bearing verticals striations that are more numerous on the lingual face and developed only on the two thirds of the crown height. 12 or 13 teeth on a dentary, 14 on a maxillary skeleton skull close-up of the teeth 9 Link to post Share on other sites
jnoun11 Posted March 26, 2013 Author Share Posted March 26, 2013 Globidens phosphaticus systematic paleontology Squamata Oppel, 1811 Mosasauridae Gervais, 1853 Mosasaurinae Gervais, 1853 Globidensini Russell, 1967 Globidens Gilmore, 1912 Globidens phosphaticus Bardet & Pereda Suberbiola, nov. sp.2005 Etymology – In reference to the deposits which have yielded this species. publication : Bardet, N., Pereda Suberbiola, X., Iarochène, M., Amalik, M. & Bouya, B. , 2005. Durophagous Mosasauridae (Squamata) from the Upper Cretaceous phosphates of Morocco, with the description of a new species of Globidens. In: Schulp, A.S. & Jagt, J.W.M. (eds): Proceedings of the First Mosasaur Meeting. Netherlands Journal of Geosciences 84: 167-175 http://www.njgonline.nl/publish/articles/000252/article.pdf http://docentes.fct.unl.pt/omateus/files/polcyn_jacobs_schulp__mateus_2010globidens_mosasaur_angola_african.pdf http://novataxa.blogspot.com/2019/03/globidens-simplex.html https://www.researchgate.net/publication/331904753_Insights_into_the_anatomy_and_functional_morphology_of_durophagous_mosasaurines_Squamata_Mosasauridae_from_a_new_species_of_Globidens_from_Morocco diagnosis : Diagnosis – In comparison to G. alabamaensis and G. dakotensis ,strongly heterodont. Anterior teeth broadly conical, taller than long, posteriorly recurved then straight, with discrete apical carinae. Mid-posterior teeth bulbous, anteriorly taller than long becoming longer than tall posteriorly, irregularly oval in cross-section, with an inflated posterior surface, a large eccentric and recurved apical nubbin, vertical sulci on medial and lateral faces, no carinae, and enamel surface covered by crude anastomosing ridges. personal discution: rare specie of mosasaur in sidi-daoui ,upper level 3 maestrichian, more abundant in sidi-chenan lower level 3 maestrichian. globidens phosphaticus lower jaw 8 Link to post Share on other sites
jnoun11 Posted March 26, 2013 Author Share Posted March 26, 2013 (edited) Carinodens belgicus publication: Schulp, A.S., Jagt, J.W.M. & Fonken, F. , 2004. New material of the mosasaur Carinodens belgicus from the Upper Cretaceous of The Netherlands. Journal of Vertebrate Paleontology 24: 744-747. A.S. Schulp, N. Bardet & B. Bouya 2009. A new species of the durophagous mosasaur Carinodens (Squamata,Mosasauridae) and additionalmaterial of Carinodens belgicus from the Maastrichtian phosphates of Morocco. Netherlands Journal of Geosciences — Geologie en Mijnbouw,88–3, 161-167. Kaddumi, H. F. 2009. Fossils of the Harrana Fauna and the Adjacent Areas. Publications of the Eternal River Museum of Natural History, Amman. 324pp. http://www.njgonline.nl/publish/articles/000421/article.pdf http://www.njgonline.nl/publish/articles/000252/article.pdf http://en.wikipedia.org/wiki/Carinodens personal discution: very rare mosasaur , only few dentary was founded in 20 years . Edited March 26, 2013 by jnoun11 8 Link to post Share on other sites
JohnJ Posted March 26, 2013 Share Posted March 26, 2013 jnoun, I have followed your work on other forums. Thank you for your contributions here on TFF. This is wonderful information resource. 1 Link to post Share on other sites
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