TFF_Praefectus

Nice tooth

Happy #FossilFriday! Pictured is a jaw fragment from a mosasaur, a large marine reptile. It was found in 85-million-year-old Cretaceous limestone along the Missouri River bluffs, which formed at the bottom of a shallow inland sea during that time.🏞️
#fossil #museum #UNSM #geology #naturalhistory

(PDF) Mosasaurs (Squamata: Mosasauridae) from the Late Cretaceous (Late Maastrichtian) of North Carolina, USA PDF | During April 2022, offshore dredging for a storm damage beach renourishment project placed large quantities of Upper Cretaceous (upper... | Find, read and cite all the research you need on Resea...

Looks to be Mosasaurus itself based on the curvature of the tooth. Here's the paper to ID teeth from Holden Beach, NC. www.researchgate.net/publication/...

(PDF) On the supposed presence of Prognathodon solvayi in the Demopolis Chalk PDF | While reporting on the mosasaurid fauna of the upper Demopolis Chalk of western Alabama and northeastern Mississippi, Derstler (1988) noted the... | Find, read and cite all the research you need...

On the supposed presence of Prognathodon solvayi in the Demopolis Chalk

www.researchgate.net/publication/...

Fossilized dinosaur tooth of an unknown carcharodontosaurid or a Siamraptor.

A dinosaur tooth of an indeterminate carcharodontosaurid from the Grès supérieurs Formation in the Savannakhet Province of Laos. Possibly cf. Siamraptor suwati, but the size and morphology seems more derived. #FossilFriday

#dinosaur #fossil #paleontology #siamraptor #carcharodontosaurid #theropod

CT scanning for fabrication is trivial given they Moroccans find a new Xenodens about every 6 months. Although, there may be some insight to be gained as to exactly why 1.5-2 crowns will develop in 1 alveolus. Very weird teeth.

Sharpe and friends invalidated it purely out of hatred for Longrich. There’s no glue on the holotype. Moroccan forgeries are not so precise.

Majungasaurus is quite unique in being relatively "small" as the apex predator in its habitat. How many Majungasaurus does it take to kill a Rapetosaurus that's not already dying or a juvenile? I don't know. Maybe impossible.

#dinosaur #fossil #paleontology #majungasaurus #abelisaurid #theropod

(PDF) Frontoparietal morphology of Xenodens calminechari revealed by a new specimen from the Maastrichtian phosphates of Morocco PDF | Commercial phosphate excavation in the Maastrichtian of Morocco has yielded several new specimens of the bizarre mosasaurid Xenodens calminechari,... | Find, read and cite all the research you n...

You can't invalidate a species just because you don't like the authors. Xenodens lives.
www.researchgate.net/publication/...

Extinct marine lizard Portunatasaurus pursuing fish in a wave Paleoart, fossil

First post on here!
I'm a paleo-illustrator so if you like fossils and extinct species stick around!

First up : Portunatasaurus chasing fish in a wave during the late Cretaceous in what is now Croatia.
It's a potential early relative to the much bigger mosasaurs!

Also, no glue under the teeth. You've seen the quality the chop shops produce. Have they ever sculpted a resorption pit?

From what I gather, Nick didn't respond to them and they inferred the rest.

Two maxillae from the
durophagous mosasaur Globidens alabamaensis from the Ozan Formation of North Sulphur River, Texas, USA. www.researchgate.net/publication/... Globidens is amongst the rarest mosasaurs in North America predominantly consisting of isolated teeth and jaw fragments.

Fossilized mosasaur tooth of a Tylosaurus.

A mosasaur tooth of a Tylosaurus cf. proriger from the Ozan Formation in Fannin County, Texas, USA. The easily visible tertiary striations towards the base of the tooth is a common characteristic of tylosaurine mosasaurs. #FossilFriday

#mosasaur #fossil #paleontology #tylosaurus

No better way to enjoy a sunset 🌅

Our conference paper on Arctic mosasaurs is now available to read! Mosasaur remains from the Puskwaskau Formation (Santonian- lower middle Campanian) of Alberta, Canada. 🇨🇦 www.researchgate.net/publication/... Massive thank you to Nathan Dehaut for the stunning Arctic mosasaur illustration!

Plioplatecarpine marginal tooth (PJCDM.2023.4) and Tylosaurine marginal tooth (TMP 1973.001.2796) from our recent publication on Arctic Mosasaurus www.researchgate.net/publication/...

As stated already, the "super croc" did not live with Spinosaurus (or Carcharodontosaurus), and this giant crocodylomorph was extinct and fossilized by that time. However, it did live alongside Suchomimus and Eocarcharia, as well as Ouranosaurus.

#crocodylomorph #fossil #paleontology #sarcosuchus

#mosasaur #globidens #texas #Cretaceous #paleontology #fossilfriday

(PDF) New remains of the mosasaur Globidens alabamaensis from the North Sulphur River of Texas PDF | Here, we report on the important discovery of two well-preserved maxillae from the durophagous mosasaur Globidens alabamaensis Gilmore, 1912. The... | Find, read and cite all the research you ne...

www.researchgate.net/publication/...

Fossilized dinosaur teeth of Majungasaurus, Saurornitholetes (Atrociraptor), and Tenontosaurus inside of display boxes sold at a fossil and mineral store.

Fossilized dinosaur tooth of an Allosaurus inside of a riker box display sold at a fossil and mineral store.

Fossilized ammonite of a Idoceras displayed on a stand sold at a fossil and mineral store.

Fossilized green ormer abalone or Haliotis on original matrix of rock containing other shellfish sold at a fossil and mineral store.

Kinokuniya is primarily known as a bookstore, but the one in Shinjuku, Japan also has a fossil and mineral store.

Assuming the provenance was labeled correctly, the "Saurornitholestes" is likely an Atrociraptor. Although it's hard to tell without seeing those hooked serrations of the clade.

Our latest paper just published! www.researchgate.net/publication/...

Mississippi mosasaurs
www.researchgate.net/publication/...

Entrance to the Shizuoka Sengen Shrine in Shizuoka, Japan showing a large red colored Shinto shrine gate or torii with a crab-shaped cloud in the sky above.

Happy New Year! ⛩️

Or, I guess it's still 2023 in a lot of places. So Happy New Year's 2024 from the future, or New Years if you travel on that day and go back in time to 2023.

On a side note, this cloud above Shizuoka Sengen Shrine looked kind of like a crab. 🦀

Fossilized radiodont or anomalocarid appendage, possibly Houcaris or Guanshancaris on original matrix or rock.

A fossilized appendage of an indeterminate radiodont from the Chengjiang Biota in Yunnan, China. These radiodonts or "anomalocarids" were all formerly assigned to Anomalocaris, but have since been moved into genera outside Anomalocarididae.

#radiodont #fossil #paleontology #houcaris #guanshancaris

Fossilized dinosaur tooth of an unknown tyrannosaurid inside of a gem jar.

A small dinosaur tooth of an indeterminate tyrannosaurid from the Aguja Formation in Brewster County, Texas, USA. Although not described from this deposit, Gorgosaurus and Daspletosaurus are probably present.

#dinosaur #fossil #paleontology #gorgosaurus #daspletosaurus #tyrannosaurid #theropod

Mosasaur teeth

Fossilized dinosaur tooth of either Suchomimus or an unknown spinosaurid.

A dinosaur tooth of an indeterminate spinosaurid, likely Suchomimus tenerensis from the Elrhaz Formation in Gadoufaoua, Niger. While it is likely Suchomimus, it lacks fluting typically seen in baryonychine teeth.

#dinosaur #fossil #paleontology #suchomimus #cristatusaurus #spinosaurid #theropod