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Showing results for tags 'carcharodon'.
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Identification Teeth of C. hubbelli are morphological intermediates between C. hastalis and the extant species C. carcharias. They all possess erect triangular cusps, no nutrient groove, and a thin to no lingual dental band ("bourlette"). C. hubbelli exhibits transitional serrations which are finer/weaker than those of the extant species, and diminish in size apically.1 This feature may be confounded with the same pattern in nascent C. carcharias.2 C. hubbelli may be confused with C. subserratus (escheri), however they can be easily distinguished by their geographic distributions. C. hubbelli is exclusively found in the Pacific, while C. subserratus (escheri) is only found in the Northern Atlantic and Mediterranean.1 References 1. Ehret, D.J., Macfadden, B.J., Jones, D.S., DeVries, T.J., Foster, D.A. and Salas-Gismondi, R. (2012), Origin of the white shark Carcharodon (Lamniformes: Lamnidae) based on recalibration of the Upper Neogene Pisco Formation of Peru. Palaeontology, 55: 1139-1153. https://doi.org/10.1111/j.1475-4983.2012.01201.x 2. Hubbell G. (1996), Using tooth structure to determine the evolutionary history of the white shark. In: Klimley AP, Ainley DG, editors. Great White Sharks: The Biology of Carcharodon carcharias. San Diego: Academic Press. pp 9–18.
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Identification Teeth of C. hastalis closely resemble those of the modern "great white" (C. carcharias) in having erect triangular cusps, no lingual dental band ("bourlette") or a thin one, and no nutrient groove. Differing from the extant species, they have no serrations on the edges.
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Identification Teeth of Carcharodon carcharias may be identified by erect, triangular crowns with no nutrient groove in the root, no lingual dental band ("bourlette"), and irregular triangular serrations on the edges. Comments This tooth is Early Pliocene in age, which is about as old as great white shark fossils get. Fossils are now illegal to export from Peru. This tooth was collected by the BHI during a series of expeditions to Peru 1985-1990 under a government permit.
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Identification Teeth of Carcharodon carcharias may be identified by erect, triangular crowns with no nutrient groove in the root, no lingual dental band ("bourlette"), and irregular triangular serrations on the edges. Comments This tooth has a self-inflicted bite mark in the form of three parallel linear gouges in the labial face of the root made by serrations of another tooth.
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Identification Teeth of Carcharodon carcharias may be identified by erect, triangular crowns with no nutrient groove in the root, no lingual dental band ("bourlette"), and irregular triangular serrations on the edges. Teeth of juveniles are smaller in size, and are comparatively narrower than adult teeth, suited for a piscivorous diet. Comments This tooth is Early Pliocene in age, which is about as old as great white shark fossils get. Fossils are now illegal to export from Peru. This tooth was collected by the BHI during a series of expeditions to Peru 1985-1990 under a government permit.
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Hello everyone, happy to have discovered this forum ! I'm french and was in Grand canyon for Holliday's, a week ago and during a hike I found this grey stone among all the red ones. It looks like a tooth by its form and the surface is cracked as old ivory. It is very different from all other stones I saw on the place. Could you help me to identify it with your experienced eyes ? Thank you in advance and have a nice day!
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From the album: Sharks
Some rare colors on this tooth! While it looks like Bone Valley, this great white actually comes from southern Peru (Pisco formation, Early Pliocene). This is about as old as GW teeth get - the modern species evolved from C. hubbelli around the Early Pliocene (~ 5 million years ago). Fossils are now illegal to export from Peru, this one was collected prior to 1990 under a Peruvian government permit. As ethical collectors, please do your due diligence to verify any Peruvian fossils you're interested in were exported prior to the ban. I respect any country's decision to protect their natural heritage in such a manner. -
From the album: Sharks
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From the album: Sharks
These white sharks come from the deserts of Chile (left) and Peru (right). -
From the album: Sharks
Great whites didn't start out "great." As young, small animals, they had narrower teeth suited for grasping slippery fish. As they age, the teeth broaden as their diet transitions to marine mammals. This small tooth measures ~ 1" on the slant and comes from the Early Pliocene of the Pisco formation in southern Peru. This is about as old as great white teeth get, they evolved from C. hubbelli near the start of the Pliocene (~ 5.3 Ma). Fossils are now illegal to export from Peru, this one was collected prior to 1990 under a Peruvian government permit. As ethical collectors, please do your due diligence to verify any Peruvian fossils you're interested in were exported prior to the ban. I respect any country's decision to protect their natural heritage in such a manner. -
From the album: Sharks
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From the album: Sharks
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Legit Carcharodontosaurus Tooth?
Rikache posted a topic in Is It Real? How to Recognize Fossil Fabrications
Hi there everyone! I've recently been acquiring different fossils to add to my collection and I came across a listing for a carcharodontosaurus tooth that really interested me. Below are a few photos of the listing advertising the carcharodontasaurus tooth. The sellers themselves are very reputable and I am in no way questioning their validity as I'm sure the tooth is a real fossil. Instead, I was wondering if anyone would be able to help me positively identify the fossil as a carcharodontosaurus tooth as I know many different teeth and fossils come from the Kem Kem Beds in Morocco. The tooth is in pretty rough condition and has been glued together as seen through the middle of the tooth laterally, though it looks to still have most of its enamel and serrations in tact. Despite these quirks, I'm still very interested in adding this tooth to my collection and I would love to know if the tooth is in fact from a carcharodontosaurus or if it is possibly from another animal of that time period. Thank you all!.thumb.JPG.3bd4a4f171664a8ab803bbb3997dad18.JPG)
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I bought this beauty last month and it finally arrived this morning. This should be the best preserved shark tooth among all the specimens I have ever touched. It’s 2.17 inches long and it’s also has a little bit pathology to both side of the edge.
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- greatwhite
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From the album: Sharks
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Fossil Bone (Shoulder?) Caloosahatchee Formation Florida Pliocene/Pleistocene
CarmeloLabadie posted a topic in Fossil ID
Hi Guys, I need your help, I was sifting for Shark teeth in Glades County, FL. And came across this specimen buried in sand/under water. I need first and foremost help on its preservation. Also if you guys could identify it would be great. Looks like a shoulder blade of a quadruped but I’m lost on what exactly it is and how old it might be. Thank you, -
Great white shark teeth used as prehistoric pendants and possible tools
Oxytropidoceras posted a topic in Fossil News
Cione, A.L. and Bonomo, M., 2003. Great white shark teeth used as pendants and possible tools by early‐middle Holocene terrestrial mammal hunter‐gatherers in the Eastern Pampas (Southern South America). International Journal of Osteoarchaeology, 13(4), pp.222-231. PDF file from Researchgate More PDF of papers PDF file from Academia.edu Yours, Paul H. -
Hello everyone! Im new here, and this is my first post. Apologies if I miswrite or post in this channel. I have just started my Fossil collection, im completely fascinated by them. Below I've posted some photos of the ones I got so far. Any opinions are welcome! 2x Carcharodon tooth, one small one big 2 x Spinosaurus 2 x Megalodon tooth the darker brown one was my first tooth. It measures 13.5 cm. The lighter one is my newest its sized at 15.5 cm. These will be getting better stands, to display them they are being made. Im in the lookout for other great pieces, as I would like to have 1-4 pieces for the same Fossil. It was actually a person on this forum who inspired me to build a collection due to the fantastic display of them. My dream would be to acquire a Tyrranosaur-Rex tooth, A claw from the raptor, or Spinosaurus, or any kind and perhaps a Mosasaurus skull. And a smaller great color looking Megalodon tooth, and perhaps others. Best, Phos_01
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Hello from Oak Island NC! Lover of the GW and all things shark related. Beginner fossil hunter, only hunted beaches so far. Hoping to do some creek/river and land hunts this year, just have to figure out where to go. Hoping to score my first squalodon and cave bear this year!!! Also into bones/skulls and oddities. Just sent off my application for SC hobby license!!! Anyone interested in teaming up or helping me find local (cape fear region) spots to hunt would be greatly appreciated (not asking for anyone's honey-hole). I'm very close to the Cape Fear River and so far have failed to find riverbank access that isn't trespassing I've never found a meg or anything super cool. Looking to move up from micros lol. I'm an adventure Guide with a local zipline/obstacle company, other than that I dedicate my time to studying fossils and beach combing. Nice to meet everyone!!!
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No modern phylogenetic analyses for extinct lamniformes?
Macrophyseter posted a topic in Questions & Answers
Taxonomic debate over extinct lamniformes remains a big thing, but I've noticed that it seems like there hasn't been any studies that use modern phylogenetic techniques (i.e. maximum parsimony) to resolve issues with extinct taxa (i.e. Carcharodon, Isurus, Macrorhizodus, Otodus). Is there a reason for this absence, or perhaps I simply have not come across one that already exists? I suppose it's possible that dental characteristics alone as character codes for a phylogenetic matrix may not be viable... -
I've been going through my shark tooth collection recently trying to refine my ids. This one here has me somewhat stumped. I had identified it as Carcharhinus priscus, but I'm not at all sure any more and am now starting to wonder if it may be a chub or great white. The first photo, which I think is the labial view, seems to fit, but what I believe to be the lingual view (2nd photo) has me confused. The tooth is from the southern German Miocene Burdigalian. Slant length 15mm. Any advice here would be appreciated.
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Is this a Great White Shark tooth? Found this in Myrtle Beach, South Carolina, USA about 15 years ago and just refound it while cleaning out a desk. It is about 1.25 inches (31.75mm) long and curves back from base to tip with serrations along the edge. Thanks!
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Hi to all. I found this stone it was very hot when I found it was sunny day I keep it in dark place to I can catch in my hand it's Heavy stone 1600 grams in weight It is difficult to scratch or break .
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Hi everybody. I found this Fossil fossils and I don't know anything about can you please let me know what this Fossil fossils . Thank you .
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I have seen several names for megalodon all with a different genus, which is correct? Edit: Another question, is cretalamna appendiculata the ancestor of otodus obliquis? Is there anything in between those if they are related? Do we know megalodon ancestry past C. appendiculata if it is directly related to O. Obliquis?
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