#カルカロドントサウルス科

[mesozoicmarket]

A dinosaur tooth of an indeterminate carcharodontosaurid, possibly Eocarcharia dinops from the Elrhaz Formation in Gadoufaoua, Niger. The size and basal morphology of the tooth would suggest a large carcharodontosaurid similar to that of Acrocanthosaurus than what is currently known from the dentition of Eocarcharia. However, there is little known about the full dentition of this species, and most phylogenetic placements classify it as a basal or early diverging carcharodontosaurid.

[mesozoicmarket]

A partial dinosaur tooth of an indeterminate theropod from an unknown locale. It was labeled as possibly from the Yixian Formation thus potentially Yutyrannus huali. However, the odd orange preservation does not match that of this deposit according to those familiar with the formation; I'm also not sure if that darkened spot was caused by fire damage. The distal serration density of 20-21/5mm seems a bit high for Yutyrannus based on what's described from Sinotyrannus which is around 15-16/5mm, and it's unclear whether the tooth has a mesial carinae. There is a possibility that it belongs to the Cretaceous carcharodontosaurian tooth taxon, Prodeinodon. A very unusual tooth, but unfortunately the dubious provenance makes identification extremely difficult if not impossible.

[mesozoicmarket]

A dinosaur tooth of an indeterminate carcharodontosaurid, possibly cf Carcharodontosaurus sp. from the Kem Kem Group in Taouz, Morocco. It's unclear what the tooth morphology of Sauroniops pachytholus is to know for sure if it can be distinguished from Carcharodontosaurus saharicus. While Sauroniops may not be diagnostic down to the genus level, and thus a nomen dubium, it is at the very least typically found as a basal carcharodontosaurid similar to the older Eocarcharia dinops. Thus, it is likely that these more derived carcharodontosaurid teeth belong to Carcharodontosaurus and the more basal Acrocanthosaurus-like teeth belong to Sauroniops. But it is entirely possible that there are additional taxon. Ironically, despite the name, Carcharodontosaurus does not actually possess shark-like teeth like the destroyed Egyptian specimen now referred to as Tameryraptor markgrafi. While Ernst Stromer likely intended the name Carcharodontosaurus for Tameryraptor, due to the weird rules of taxonomy, the name goes to the Moroccan neotype being closer to the Algerian Megalosaurus saharicus tooth taxon than to Tameryraptor.

[mesozoicmarket]

A worn dinosaur tooth, possibly an indeterminate carcharodontosaurid from the Elrhaz Formation in Gadoufaoua, Niger. This Barremian to Albian aged theropod morphology bears some resemblance to the younger Cenomanian aged Tameryraptor markgrafi from the Bahariya Formation known for its odd shark-like teeth. It does not appear to be Eocarcharia dinops or the likely second undescribed larger carcharodontosaurian in the deposit. It is still possible this tooth is not carcharodontosaurid, but an odd Middle Jurassic theropod from the Irhazer Group.

[mesozoicmarket]

A very worn dinosaur tooth of an indeterminate theropod, possibly Neovenator salerii from the Wessex Formation in the Isle of Wight, England. The tooth is worn beyond identification past Theropoda indet., but the CHR and CBR suggest it could be the basal carcharodontosaurian Neovenator. The basal tyrannosauroid Eotyrannus lengi is also another theropod found in this deposit, but is considered extremely rare. The majority of non-spinosaurid medium-sized theropod teeth from the Wessex Formation are assumed to be Neovenator.

[mesozoicmarket]

A dinosaur tooth of an undescribed carcharodontosaurian, possibly a cf. Siamraptor suwati from the Grès supérieurs Formation in the Savannakhet Province of Laos. This species is currently only known from the equivalent Khok Kruat Formation in Thailand.

[mesozoicmarket]

A dinosaur tooth of an Eocarcharia dinops from the Elrhaz Formation in Gadoufaoua, Niger. This species is often erroneously replaced or mistaken with the younger and much larger Carcharodontosaurus in media when featuring its contemporary genera such as Ouranosaurus or Sarcosuchus.

[mesozoicmarket]

A dinosaur tooth of an indeterminate carcharodontosaurid from the Grès supérieurs Formation in the Savannakhet Province of Laos. It could possibly belong to cf. Siamraptor suwati, but the size and morphology seems to indicate a more derived species more similar to Carcharodontosaurus. Crown height of this tooth is around 3.2 inches (81mm) with a CBL of 33mm and CBW of 15mm. Midline mesial and distal serration density around 11.5/5mm, with the mesial carinae extending to the base. So a DSDI of 1.0, CHR of 2.45, and a CBR of 0.45.

[mesozoicmarket]

A partial dinosaur tooth, possibly an indeterminate carcharodontosaurid from the Elrhaz Formation in Gadoufaoua, Niger. Originally this specimen was assumed to have come from the Middle Jurassic Irhazer Group based on the odd morphology. However, with the description of Tameryraptor markgrafi based on the destroyed Egyptian specimen previously referred to Carcharodontosaurus saharicus, these shark-like teeth may belong to an undescribed carcharodontosaurid from the Elrhaz Formation related to Tameryraptor. Most carcharodontosaurids, including the Algerian holotype (Megalosaurus saharicus) tooth taxon and Moroccan neotype of Carcharodontosaurus have typical knife-like teeth common to the clade and that the shark-like tooth morphology was assumed to be an inaccurate illustration done by the German paleontologist Ernst Stromer. But it has turned out that this is indeed what the teeth looked like in Tameryraptor. If this tooth is from the Elrhaz Formation, this unknown species would have lived alongside another carcharodontosaurian, Eocarcharia dinops. It is still possible this tooth is not carcharodontosaurid, but an odd Middle Jurassic theropod from the Irhazer Group.

[mesozoicmarket]

A partial dinosaur tooth of an indeterminate theropod from the El Mers Group in Boulahfa, Boulemane, Morocco. The tooth notably shows pronounced interdenticular sulci or grooves in between the denticles on the distal carina. The short mesial carina could suggest a megalosauroid, but could also be a basal allosauroid as well.

[mesozoicmarket]

A worn dinosaur tooth, possibly an indeterminate carcharodontosaurid from the Elrhaz Formation in Gadoufaoua, Niger. Though the morphology does not match, originally, this tooth was assumed to be an abelisaurid of some kind such as Kryptops palaios. However, with the description of the younger Cenomanian aged Tameryraptor markgrafi from the Bahariya Formation, these shark-tooth-like morphologies may belong to an older relative of this odd toothed carcharodontosaurian. It does not appear to be Eocarcharia dinops or the likely second undescribed larger carcharodontosaurian in the deposit.