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Found 14 results

  1. The unnamed giant Tylosaur of the Moroccan Phosphates is revealed at last. The great and mighty Hainosaurus is a previously unrecognized macropredator present in the latest Cretaceous (Maastrichtian) of Morocco. https://www.researchgate.net/publication/365437927_First_Record_of_a_Tylosaurine_Mosasaur_from_the_Latest_Cretaceous_Phosphates_of_Morocco Authors: @Praefectus @BrennanThePaleoDude @pachy-pleuro-whatnot-odon Abstract: The latest Cretaceous Phosphates of Morocco preserve the highest biodiversity of mosasaurid squamates anywhere in the world. Intensive sampling over the past century has uncovered at least ten genera and thirteen species from the mosasaur subgroups Halisauromorpha, Plioplatecarpinae, and Mosasaurinae. Notably missing from the assemblage are members of the macropredatory Tylosaurinae. The Tylosaurinae were globally rare in the Maastrichtian and their apparent absence has been previously explained by either collecting bias, ecological preference for deeper waters, or habitat restriction to higher paleolatitudes. Here, we describe a new tylosaurine mosasaurid, Hainosaurus boubker sp. nov., based on several partial skulls and isolated teeth originating from the Couche III layer of the Sidi Chennane Phosphate quarry near Oued Zem, Morocco. It is unique amongst tylosaurine mosasaurids in possessing blade-like teeth that are laterally compressed, encircled by enamel facets, and differentiated along the dental margin. The discovery of this new taxon in the Maastrichtian of Morocco is remarkable as it represents both the youngest species of Tylosaurinae and the first occurrence in North Africa. It has been a pleasure to work on this project and I am so happy to finally see it come to a conclusion. Tremendous thank you to Boubker Chaibi (Instagram @foussilouedzem) for discovering and donating the type material. Additionally, thanks to Carlos Espinosa (Instagram @carlost_sapiens) for bringing Hainosaurus to life. Funding for this project was provided by the Association of Applied Paleontological Sciences’ Charles H. Sternberg Scholarship for vertebrate fossil research. Thank you very much the members of the AAPS. Map and Stratigraphic column of the Moroccan Phosphates Premaxilla of Hainosaurus boubker Premaxilla of Hainosaurus boubker Maxillae of Hainosaurus boubker Dentaries of Hainosaurus boubker Hainosaurus boubker right maxilla and premaxilla Anterior teeth Hainosaurus boubker Mid-marginal and posterior teeth H. boubker Discoverer and namesake of H. boubker, Boubker Chaibi (Instagram @foussilouedzem) Hainosaurus boubker by Carlos Espinosa (Instagram @carlost_sapiens) Reconstructed skull of H. boubker at the Sternberg Museum as part of the Sahara Sea Monster's traveling exhibit. By @jnoun11. Hainosaurus boubker skull sketch by Instagram @yoshisrgr8 “The Warden of the Cretaceous Seas” by Instagram @primal_art_saurus Hainosaurus vs. Thalassotitan 2 versions. No ammonites, ammonites. Memento mori by Twitter @ttorroo Hainosaurus vs. Thalassotitan Hainosaurus boubker by Instagram @icthyovenator by Instagram @primal_art_saurus Thanks for reading.
  2. ThePhysicist

    Coniasaurus crassidens tooth

    From the album: Squamates

    When I initially found this I was hoping it was Mosasaurid, however upon some reading, I decided it's more likely to be a sister group squamate. In particular, the labial sulcus convinced me it is probably C. crassidens (see Caldwell 1999). It is however much larger than any Coniasaurus teeth I've seen published.
  3. ThePhysicist

    Undescribed squamate tooth

    From the album: Squamates

    Originally believed to be an anterior position of Coniasaurus, this is an undescribed squamate reptile tooth from the Turonian of North TX (via pers. comm. with Mike Polcyn; discovered 4/20/2022). It has only a distal carina which is offset, some faceting on the labial face of the crown, and textured enamel which becomes smooth on the mesial edge.
  4. ThePhysicist

    Coniasaurus tooth

    From the album: Squamates

    A small tooth from a small aquatic reptile that lived during the Turonian of North TX. They are small, squat teeth with textured enamel, and possess only an indistinct distal carina (no mesial carina).
  5. @pachy-pleuro-whatnot-odon and I wrote a paper on Mosasaurus hoffmannii fossils from the Moroccan Phosphates. https://www.researchgate.net/publication/357836567_Occurrence_of_Mosasaurus_hoffmannii_Mantell_1829_Squamata_Mosasauridae_in_the_Maastrichtian_Phosphates_of_Morocco https://www.aaps-journal.org/pdf/JPS.C.22.0001.pdf Abstract: Marginal tooth crowns from the hypercarnivorous marine reptile Mosasaurus hoffmannii Mantell, 1829 are reported for the first time from the Late Cretaceous (Maastrichtian) phosphates of Morocco. Fossilized remains of this species are previously known from Campanian and Maastrichtian outcrops in Europe, North America, and western Asia at a paleolatitudinal belt of 30-45°N. New fossil material originates from the Upper Couche III layer of the Oulad Abdoun Basin, south of Oued Zem, Morocco. The discovery of M. hoffmannii in Morocco extends its paleobiogeographic range south to 25°N and into the southern margin of the Mediterranean Tethys. Rempert, T.H., Vinkeles Melchers, A.P.M., Rempert, A.N., Haque, M.R., and Armstrong, A.R. (2022). Occurrence of Mosasaurus hoffmannii Mantell, 1829 (Squamata, Mosasauridae) in the Maastrichtian Phosphates of Morocco. The Journal of Paleontological Sciences, 10: 1-22. It has been fun working on this project. Great to finally see it published. Many thanks to the Editorial Board of the Journal of Paleontological Sciences and Walter Stein and Dr. John Nudds for helpful review. Excavation zone in the Sidi Chennane phosphate quarry. Lithostratigraphical units of the Sidi Chennane Phosphate Quarry; mosasaurid remains originate from the Upper Couche III layer. Mosasaurus hoffmannii Mantell, 1829, from the Moroccan phosphates. A. REMPC M0001, UCIII (Maastrichtian) layer, Oulad Abdoun Basin, Sidi Daoui, in posterior (A1), labial (A2), anterior (A3), and lingual (A4) view. B. REMPC M0002, UCIII (Maastrichtian) layer, Oulad Abdoun Basin, Sidi Chennane, in posterior (B1), labial (B2), anterior (B3), and lingual (B4) view. C. REMPC M0003, UCIII (Maastrichtian) layer, Oulad Abdoun Basin, Sidi Chennane, in posterior (C1), labial (C2), anterior (C3), and lingual (C4) view. Mosasaurus hoffmannii Mantell, 1829, from the Moroccan phosphates. D. AVM 01, UCIII (Maastrichtian) layer, Oulad Abdoun Basin, in posterior (D1), labial (D2), anterior (D3), and lingual (D4) view. Upper Couche III (Maastrichtian) layer, Oulad Abdoun Basin, Morocco. E. AVM 02, UCIII (Maastrichtian) layer, Oulad Abdoun Basin, in posterior (E1), labial (E2), anterior (E3), and lingual (E4) view. Mosasaurus hoffmannii Mantell, 1829, F. CORN 01 in anterior (F1), labial (F2), posterior (F3), and lingual (F4) view. Upper Couche III (Maastrichtian) layer, Oulad Abdoun Basin, Morocco (Image courtesy of George Corneille). Teeth from the first discovered Mosasaurus hoffmannii specimen, TM 7424, Teylers Museum, Haarlem, the Netherlands, A. in lingual view; B. in labial view showing prism faces; C. in lingual view showing indiscernible lingual facets, light serrations on the carinae, and medial tooth curvature.
  6. Praefectus

    REMPC M0014

    From the album: Prae's Mosasaurs

    Tooth from the mosasaur Carinodens belgicus.
  7. Praefectus

    REMPC M0013

    From the album: Prae's Mosasaurs

    Carinodens belgicus - The corn-kernel toothed mosasaur.
  8. Praefectus

    REMPC M0008

    From the album: Prae's Mosasaurs

    Tooth of Carinodens belgicus from the Moroccan Phosphates.
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