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Showing results for tags 'carcharodon'.
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This time, it is a 4.2 inch Chubutensis tooth discovered in Bobert, South Carolina that will be included in the shark tooth collection! The cusps aren't that prominent, but I think they're great teeth!
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- Carcharodon
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From the album: Sharks
Carcharodon carcharias (Neonate) Pisco Formation, Departamento de Arequipa, Sitio Sacaco, Peru Right Upper Lateral A small tooth from a young-of-the-year great white (~ 1.5 m / 5 ft total length). Teeth of these very young individuals are narrower than adult teeth, and possess lateral "cusplets" - features that aid in their piscivorous (fish-dominated) diet.- 2 comments
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Yippee! The weather was nice enough today that I could finally go off for an extended ride on my bike. And of course I decided it would be best to make the hour's trip out to my favorite Miocene shark tooth site. So I packed my trusty Estwing hammer, a ziplock bag and my kneepads into the saddle bag. I even thought to take along my camera, so I can show a few pics. I however stupidly oversaw my water bottle which I had just put aside for a moment before I took off and didn't notice it until I got there, but my tongue didn't get all that dry and there was a nice little restaurant on the way home where I could wet my whistle. I spent about 2 1/2 hours chopping away at the outcrop and came up with a few nice ones. Here's what my dig looked like about halfway through. And here are a few in situ photos. There were a lot of uncomplete ones missing the roots or tips, so I just left a pile for the next group of locals that come along. I ended up packing 12 of them away and as is usually the case with shark teeth, I already had them all cleaned up just a half an hour after I arrived home. I decided to give most of them to my friend who lets me use his workshop and just hung onto the last 2 pictured below for the collection, since I already have a very good selection from this spot. The Carcharodon hastalis at the very bottom was one of the largest I've ever found there and despite the fact that it's missing the root and a bit of the tip, I got so excited when I found it that I forgot to take an in situ photo. Mitsukurina lineata Carcharias sp. Carcharias sp. Sparus aurata Carcharias (or Araloselachus, take your choice) cuspidata Carcharodon (or Cosmopolotidus, take your choice) hastalis
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From the album: Fossils
This is my largest mako (now considered an extinct white shark). It measures 3.16 inches and was found in the Lee Creek Mine Pliocene Yorktown Formation.-
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- carcharodon
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I've often wondered what some of the fossil shark teeth in my collection would look like if they didn't have root damage, missing cusplets, etc. Many of these imperfect fossils are somewhat rarer and/or otherwise favorites of mine, so I've been hesitant to permanently alter them through restoration. Recently, I decided to go ahead and restore several of these teeth--but wanted to do so in a way that wouldn't be permanent. The technique I've adopted is to first paint the broken surfaces of the teeth that I want to restore with a couple of coats of liquid latex. Once the latex is dry, I then shape and build restored roots, cusplets, etc. out of epoxy putty on top of the intervening latex layer. The putty sticks well to the latex and can be shaped to match the tooth without directly touching or bonding with the fossil. In most cases, when the putty is dry, the restored pieces have been easy to detach with a simple tug, as the putty doesn't permanently bond to the latex (the latex layer itself is also then easily removable/peelable from the fossil). In a couple of cases, I have unfortunately caused a bit of damage to teeth in the process of removing the restored pieces. Once, because I inadvertently pushed the putty into an indentation in the root of the tooth and as a result it couldn't be cleanly pulled off/out. Another time, the tooth I was working on was more fragile than I realized and the force of pulling the putty off caused a fracture. Luckily, the damage wasn't too extensive in either case, and I've (hopefully) learned to be more careful. I had never attempted to restore teeth before but I found some very some helpful tips for doing so on TFF here and here. A few additional notes on materials and methods: The "white" (it's definitely more of a gray) epoxy putty I've been using is Apoxie Sculpt, which I ordered from an art supply store. I ordered the liquid latex online as well. For root surface texture, I've also used the liquid latex to create several small surface molds from different fossil teeth, which can be pressed into the epoxy putty before it hardens (as recommended in one of the TFF posts linked to above). I use an X-Acto knife for texture and shaping as well. I use fine sandpaper of varying grits, from 400 to 2000, to smooth the "enamel" portions of the restorations. I use acrylic paint for the colors--sienna, umber, tan, black, white, red, blue, yellow--and finish things off with a clear matte or clear gloss acrylic glaze to improve durability (the gloss glaze is for "enamel"). I use small amounts of non-permanent Museum Wax (ordered online) to attach the final restored pieces to the original fossils. Below are several of the results (the original teeth and the detached restored parts are on the left and the final teeth with their restored parts "attached" are on the right of these images). Otodus obliquus tooth from the Eocene of the Isle of Sheppey, Kent, UK -- restorations to the root and a missing cusplet: Cretodus sp. tooth from the Cretaceous of Texas, USA -- restoration to the cusp (I did a better job of color matching on the lingual than the labial side of this one): Cretodus sp. tooth from the Cretaceous of Texas, USA -- restoration to the root and a missing cusplet: Dwardius siversonii tooth from the Cretaceous of Stary Oskol, Russia -- restoration to the root: Otodus aksuaticus tooth from the Eocene of Maryland, USA -- restoration to the root and a missing cusplet: "Hubbell" Otodus megalodon tooth from the Mio-Pliocene of West Java, Indonesia -- restoration to the root and a small part of the cusp: Carcharodon carcharias tooth from the Mio-Pliocene of Florida, USA -- restoration to the tooth and a small part of the cusp:
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If you know anything about modern white sharks, how big are teeth of this size? The size is 58mm. How big was this great white shark? Are great white shark teeth of this size large?
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- carcharodon
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Despite not really feeling up to hunting yesterday (I'm getting discouraged by my finds lately), I decided to go while the weather was still decent. And when you are not expecting to find much and/or set the bar pretty low, it makes it easy to exceed your expectations and have a pretty good trip. Here is what I brought home: First up are the odontocete fossils: My first ear bone ever: And a vert and related piece of bone that were sitting together under an uprooted tree: That's it for cetaceans, but that is pretty good for one trip for me. Other verts (not in good shape, though): Burrfish mouth plates (also not good condition): Ray mouth plate pieces and my biggest tail barb so far: Random osteoderms and bone pieces (I keep less than half of the bones I find): Various steinkerns, which I try to limit now as well, but the spiraling ones are cool: Gator tooth that was still partially in matrix: Fish jaw with teeth (maybe...let me know if you recognize it): Crab claw, I think: What I believe is my first piece of petrified wood here (again, feel free to correct me): And, of course, shark teeth: My best Great White so far: My first Angel shark tooth (shoulder and tip of crown are broken): A cool looking tooth - posterior sand tiger I believe: And the rest of the teeth (including a couple broken threshers, a barracuda, a sawfish/sawskate, etc.), which I won't show individually: As always, I wish my body could have handled a few more hours of hunting, but between little rain (no new wash-out), low creek water levels, rising heat, and health limitations, I think it turned out to be a pretty good haul. And no speeding ticket this trip! Thanks for reading!
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- bigteeth
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My understanding is that lower teeth for Carcharodon hastalis differ from Isurus Oxyrinchus in that the Isurus crown is slenderer than Carcharodon. What are some of the other distinguishing differences? Is the image of a Carcharodon hastalis or Isurus Oxyrinchus fossil?
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Dear all, For as long as I can remember, I’ve always been interested in fossils. I am originally from the Netherlands but I grew up in the South of France. As a kid, you could always find me in the old abandoned quarry near to our house, looking for ammonite & sea urchin fossils on a heap of old stones! I am now 30 and I have moved to the Dutch Caribbean for work. Not having looked for fossils for about a decade, I decided with a friend to have a go at this old hobby of mine on a Sunday, on a spot rumored to feature loads of nice fossils. After 2 hours of searching and not finding jack and having been chased by a pack of wild dogs we decided to return home. But on our way back, on a spot that seemed interesting, we decided to have a final look and managed to find a whole heep of shark teeth. About 40 of them! I am very curious whether some shark teeth enthusiasts would be able to identify the species of sharks that once shedded these shining beauties! Especially the larger ones! Could they have been from great whites? or perhaps the Otodus sokolovi? Friendly regards, M.
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From the album: Fin Lover's South Carolina Finds
It's not perfect but it's rare to find one with this much root in Summerville.-
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I think I've mentioned here and there more recently that I don't go hunting all that much any more. But I still like to ride my bike just about every day. So every once in a while I get the urge to cycle up to my favorite site in the Miocene which is only about 20 km. away from home. As I did the day before yesterday. It never ceases to amaze me that teeth still pop out of this exposure which has probably been worked over many, many years. The great thing about these things is that they hardly take up much space, which is a valued commodity within my space restricted collection nowadays. I think I have a Carcharias sp. and a Carcharodon hastalis here. Please correct me if I'm wrong.
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Need help identifying the species of these shark teeth. They were both found on the beach in Venice, FL.
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- carcharodon
- florida
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From the album: Sharks
Carcharodon carcharias (Young Juvenile) Pisco Formation, Departamento de Arequipa, Sitio Sacaco, Peru 2nd? Left Upper Anterior A small tooth from a very young great white (< 2 m / 7 ft total length). Teeth of these very young individuals are narrower than adult teeth, and can possess lateral "cusplets" - features that aid in their piscivorous (fish-dominated) diet.-
- baby great white
- carcharodon
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From the album: Sharks
Carcharodon carcharias (Neonate) Pisco Formation, Departamento de Arequipa, Sitio Sacaco, Peru 2nd Left Upper Anterior A small tooth from a young-of-the-year great white (~ 1.5 m / 5 ft total length). Teeth of these very young individuals are narrower than adult teeth, and possess lateral "cusplets" - features that aid in their piscivorous (fish-dominated) diet.-
- baby great white
- carcharodon
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From the album: Sharks
Carcharodon carcharias (Neonate) Pisco Formation, Departamento de Arequipa, Sitio Sacaco, Peru Lower Lateral A small tooth from a young-of-the-year great white (~ 1.5 m / 5 ft total length). Teeth of these very young individuals are narrower than adult teeth, and possess lateral "cusplets" - features that aid in their piscivorous (fish-dominated) diet.-
- baby great white
- carcharodon
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From the album: Sharks
Carcharodon carcharias (Neonate) Pisco Formation, Departamento de Arequipa, Sitio Sacaco, Peru 2nd Right Lower Anterior A small tooth from a young-of-the-year great white (~ 1.5 m / 5 ft total length). Teeth of these very young individuals are narrower than adult teeth, and possess lateral "cusplets" - features that aid in their piscivorous (fish-dominated) diet.-
- baby great white
- carcharodon
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From the album: Sharks
Carcharodon carcharias (Neonate) Pisco Formation, Departamento de Arequipa, Sitio Sacaco, Peru 3rd Right Upper (Intermediate) A small tooth from a newborn great white shark (~ 1.5 m / 5 ft total length). This is a rare intermediate tooth which is mesially-slanted, and reduced in size relative to adjacent teeth. The smaller size of the 3rd upper anterior is an adaptation unique to the dentitions of Lamniforms, thought to concentrate the bite force in the first two upper anteriors.-
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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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- carcharodon
- carcharodon hastalis
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Identification Teeth of Carcharodon carcharias may be identified by triangular crowns with no nutrient groove in the root, no lingual dental band ("bourlette"), and irregular triangular serrations on the edges. Teeth of neonatal individuals (newborn/young of the year) possess small lateral "cusplets," with a deep "V" profile made by the root lobes, and are more narrow than adult teeth1. This narrow tooth form with cusplets is suited for the great white's piscivorous (fish-dominated) diet at a young age. Comments This is an exceptional upper right lateral tooth from a newborn or full-term embryo great white ( ~ 1.5 m / 5 ft total length). This tooth was exported from Peru prior to 1990. References 1. Tomita, T., Miyamoto, K., Kawaguchi, A., Toda, M., Oka, S.-I., Nozu, R. and Sato, K. (2017), Dental ontogeny of a white shark embryo. Journal of Morphology, 278: 215-227. https://doi.org/10.1002/jmor.20630
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From the album: Sharks
Cool bichrome great white tooth from the Early Pliocene of Southern Peru. Fossils are now illegal to export from Peru, this one was collected prior to 1990 under a Peruvian government permit by the BHI.-
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- carcharodon
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From the album: Sharks
Lower tooth from an early great white (Early Pliocene). Juvenile teeth are narrower than those of adults, more suited to a piscivorous (fish-eating) diet. Fossils are now illegal to export from Peru, this one was collected prior to 1990 under a Peruvian government permit by the BHI.-
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From the album: Sharks
Historically known as "makos", we now recognize C. hastalis as being ancestral to the modern great white shark.-
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From the album: Sharks
One of the most coveted teeth due to the great white's popularity. Being one of my favorite animals, I knew I had to get a nice one eventually. This one in particular is special. Besides being in superb condition, this tooth has a bite mark on the root: three parallel grooves on the labial side of the root gouged by serrations. Bite marks on teeth are uncommon, and a neat feature on this already sweet tooth. This tooth is from the desert of northern Chile. Fossils from Chile are now illegal to export, so as an ethical collector you need to make sure that any Chilean fossils you are interested in were exported prior to the ban.-
- bahia inglesa
- caldera basin
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