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Showing results for tags 'maastrichtian'.
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From the album: My collection in progress
Rhombodus binkhorsti Dames 1881 Location: Morocco Age: 72-66 Mya (Maastrichtian, Upper Cretaceous) Measurements: 1,8x2,8 cm Kingdom: Animalia Phylum: Chordata Subphylum: Vertebrata Class: Chondrichthyes Subclass: Elasmobranchi Superorder: Batoidea Order: Rajiformes Family: Rhombodontidae -
From the album: My collection in progress
Cretalamna biauriculata Wanner 1902 Location: Morocco Age: 72-66 Mya (Maastrichtian, Upper Cretaceous) Measurements: 1,8x2,8 cm Kingdom: Animalia Phylum: Chordata Subphylum: Vertebrata Class: Chondrichthyes Subclass: Elasmobranchi Superorder: Selachimorpha Order: Lamniformes Family: Otodontidae -
From the album: My collection in progress
Squalicorax pristodontus Agassiz 1843 Location: Morocco Age: 72-66 Mya (Maastrichtian, Upper Cretaceous) Measurements: 2,5x1,5 cm Kingdom: Animalia Phylum: Chordata Subphylum: Vertebrata Class: Chondrichthyes Subclass: Elasmobranchi Superorder: Selachimorpha Order: Lamniformes Family: Anacoracidae -
From the album: Delaware Fossils
Scapanorhyncus texanus (Roemer, 1852) From the Late Cretaceous spoils of the Chesapeake and Delaware Canal, Reedy Point, Delaware Microfossil - 7.6 mm Not the best example of a shark tooth, but a rare find for Reedy Point. Most shark teeth were found further west.-
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- c and d canal
- campanian
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Hello forum members! With the new Coronavirus raging across the world, I thought it would be nice to start some kind of advent calendar, using my own Squalicorax collection. Everyday I will post one or multiple Squalicorax teeth from one location. Let's see what ends sooner, my collection or the virus outbreak. I will start with the oldest tooth from the Albian substage and end with the teeth from the uppermost substage; the Maastrichtian. The first one is the oldest and also one of the smallest teeth in my collection. Unfortunately it is so small that the photo's are not as sharp as I would have liked, but I think they are good enough. It is Squalicorax primaevus from the Middle Albian Argiles tégulines of Courcelles, Aube Department, France. See you guys tomorrow, Sander
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Hello all During my fossil hunt yesterday, I found these two shark teeth right next to each other. I assume both are the same species, I just don't know which one. They were found in the region around Mons/Bergen in Belgium, where both Campanian and Maastrichtian seem to occur. I don't know exactly which layer these came out of, since I found them in a collapsed wall. Sharks seem to be quite rare here, so really happy with them. As found: The second tooth: Thanks all for your help.
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Recently I acquired a bulk lot of Moroccan shark teeth after doing some reading and a lot of sorting. I have more questions than identifications. To keep it simple I stuck with the “square rooted teeth for the first round. I’ve come up with five categories 1 two cusplets - Serratalamna? 2 multiple cusplets but small - ? 3 two cusplets - Cretolamna? 4 two cusplets and no or very weak transversal groove - Otudus? 5 strongly reduced cusplets - ? If other pictures are useful let me know.
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From the album: Prae's Mosasaurs
Carinodens belgicus -
From the album: Prae's Mosasaurs
Tooth of Carinodens belgicus-
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- carinodens
- carinodens belgicus
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@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.
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- cretaceous
- khouribga
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From the album: Prae's Mosasaurs
Tooth of Carinodens. -
From the album: Prae's Mosasaurs
Tooth of Carinodens belgicus.-
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- carinodens
- cretaceous
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From the album: Prae's Mosasaurs
Carinodens belgicus tooth.-
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- cretaceous
- khouribga
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From the album: Prae's Mosasaurs
Tooth from the mosasaur Carinodens belgicus.-
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- carinodens
- cretaceous
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From the album: Prae's Mosasaurs
Carinodens belgicus - The corn-kernel toothed mosasaur.-
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- carinodens
- cretaceous
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From the album: Prae's Mosasaurs
Tooth from the mosasaur Carinodens belgicus.-
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- carinodens
- cretaceous
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From the album: Prae's Mosasaurs
Tooth from Carinodens belgicus.-
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- aquatic
- carinodens
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From the album: Prae's Mosasaurs
Carinodens belgicus. The corn-kernel toothed mosasaur.-
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- carinodens
- cretaceous
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From the album: Prae's Mosasaurs
Tooth of the mosasaur-
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- carinodens
- cretaceous
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From the album: Prae's Mosasaurs
Tooth of Carinodens belgicus from the Moroccan Phosphates.-
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- carinodens
- cretaceous
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From the album: Prae's Mosasaurs
Carinodens belgicus tooth. -
From the album: Prae's Mosasaurs
Tooth of the mosasaur Carinodens belgicus.-
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- africa
- carinodens
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From the album: Prae's Mosasaurs
Carinodens belgicus. The corn-kernel toothed mosasaur.-
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- carinodens
- carinodens belgicus
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Identified as Carinodens belgicus based on occlusal aspect ratio (labiolingual/mesiodistal <2.2).
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Just returned from my fall collecting trip to South Dakota. Will focus on my finds and I've attached a couple of prior trips to see more of the area, fauna, finds and collecting gear. Spring 2021 http://www.thefossilforum.com/index.php?/topic/115998-spring-dinosaur-dig-in-south-dakota/ Fall 2020 http://www.thefossilforum.com/index.php?/topic/109554-collecting-trip-hell-creek-formation/#comments Before I get into my new finds here are some prepped items from my last two trips that I have yet to share A possible Troodontid metatarsal A very weird bone, showed Pete Larsen and he's leaning to a pathologic Digit III Edmontosaurus toe bone. Very odd bone. Good size An nice size Edmontosaurus cervical vertebra about 7.8" High and 13.5" wide Edmontosaurus, a big Chevron, 14.5" long Edmontosaurus, Metacarpal III - 10" Long I was cleaning this Edmontosaurus Digit IV -1 toe bone and a surprise hole popped up became more interesting as I continued clearing it. It has the outer shape and interior profile/curvature of a tyrannosaurid tooth. Is it predation ? I went to show it to Pete Larsen but he was at the Denver show.. Will see him at Tucson. There was no predation marks on the opposite side so not sure. The preservation is pretty solid. Edmontosaurus - Left Dentary about 23 inches long.
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- cretaceous
- hell creek formation
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