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  1. Ludwigia

    A few more shark teeth

    The weather was great today, so I hopped on the bike and headed off to check out a new museum in the area which was supposed to have opened up on April 1st, but I guess it must have been an April Fool's joke because it was closed. Well, actually we got locked down on Monday, so they weren't allowed to open the doors. I was just hoping, and anyway it was a nice day for a ride. It's a small branch of the well-known and much larger Hauff Museum in Holzmaden, so one of these days soon (hopefully), I'll drop in again to have a look around and talk shop with the proprietors. After I'd studied t
  2. 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.
  3. hemipristis

    Carcharhinus altimus tooth?

    South Florida Beach Find. Pretty sure it's genus Carcharhinus. Elongate, curved blade, singular notch and root configuration has me thinking C. altimus (bignose shark). C. acronotus was also similar, but that species tends to be small (<5 ft), apparently. The tooth is 13-14mm in vertical height, which seems a bit large for a 5-foot Carcharhinid. Thoughts?
  4. Smith, V., 2015. Species discrimination in Carcharhinus shark teeth using elliptic Fourier analysis (Doctoral dissertation, Tulane University School of Science and Engineering). https://www.researchgate.net/publication/316735477_Species_discrimination_in_Carcharhinus_shark_teeth_using_elliptic_Fourier_analysis In part, the abstract reads: "Sharks of the genus Carcharhinus are commonly represented in fossil assemblages by isolated teeth. Neogene fossil teeth from this genus have been identified by many authors as belonging to extant speci
  5. SharkySarah

    Super tiny requiem shark tooth?

    From the Calvert formation. Ruler in metrics
  6. fossilsonwheels

    STH Micros in need of ID help

    I am fairly comfortable with the STH micros as far as identification goes but I found a few things that I need some help with. First up is one that I am 90% sure on the ID but I want to be sure. I believe I found a couple of Raja teeth. The first one I found looks to be complete and tiny, a little over 1mm. I know skate teeth are somewhat uncommon in this fauna and this would be my first one.
  7. Ludwigia

    Carcharhinus priscus (Agassiz 1843)

    From the album: Pisces

    Slant length 9mm. Upper lateral Burdigalian, Miocene Obere Meeresmolasse Formation From the NW Lake of Constance area.
  8. Ludwigia

    Carcharhinus priscus (Agassiz 1843)

    From the album: Pisces

    Root length 1cm. Lower lateral Burdigalian, Miocene Obere Meeresmolasse Formation From the NW Lake of Constance area.
  9. Ludwigia

    Carcharhinus sp. (Blaineville 1816)

    From the album: Pisces

    15mm. Burdigalian Miocene OMM Formation Found near the Lake of Constance
  10. Hello, I am currently re-sorting my collection and this brings up some questions about some modern shark teeth. For example, I found two teeth of this appearance. At first glance, I would suspect a Carcharhinus species (like C. falcifromis, but the teeth look different) , but I don't know which. Unfortunately, I don't find any comparable teeth in the Internet. Even if this isn't a fossil this time, I hope that you can help me again. The tooth is 1,3cm (0,51") in size and from the philippines. Best regards from Germany!
  11. Hello Everyone, I've been busy with the kayak and doing some hiking to boot. Funny thing is .. you never know what you are going to just walk right up on sitting pretty after a low tide falls away. 3 mile-ish hike there and back with three miles of paddling .... (this guy was lying in the middle of it) Probably has been buried under the soft sand waiting just beneath the surface. Just shy of 6 inches I love it .. warts and all. In situ ... In hand .. Some really great Carcharhinus teeth lately ... they haven't been jet bl
  12. Brett Breakin' Rocks

    Carcharhinus sp. 03

    From the album: Sharks and their prey ....

    Carcharhinus sp. Savannah, Georgia

    © © Matthew Brett Rutland

  13. So I was recently going thru some Florida tooth material (Mio/Plio-Pleistocene) from years ago and realized I had lumped a bunch of this stuff in a packet without investigating them too thoroughly. I started to bug Jeff about several and thought I'd see what you all thought as well so I could learn something more from you all. So just 4 teeth for this thread. I was noticing #1's serrations were pretty coarse and well developed and unusual and I was asking about its possibilities and the meg possibility came up. I then found #2 tonight in another bag and it has some similariti
  14. Hi everyone! I just wanted to share my master's thesis with the community, I think it may be of interest to some. The basic idea was to apply morphometric methods to isolated modern Carcharhinus shark teeth, and see how well they could identify the teeth to species. 3 specimens each from 12 species had their teeth extracted and photographed. The tooth images may be helpful if you're trying to identify Carcharhinus teeth. I don't know when I'll ever get around to publishing the paper in a journal, and it's already accessible online at Tulane University, so I decided to just post it on researchg
  15. Ludwigia

    Carcharhinus priscus (Agassiz 1843)

    From the album: Pisces

    7mm. Burdigalian, Miocene, Obere Meeresmolasse Formation. Found at Billafingen, B.-W., Germany.
  16. Brett Breakin' Rocks

    Carcharhinus sp. 03

    From the album: Sharks and their prey ....

    Carcharhinus and Galeocerdo sp. Savannah River Savannah, Georgia

    © Matthew Brett Rutland

  17. Brett Breakin' Rocks

    Carcharhinus sp. 01

    From the album: Sharks and their prey ....

    Matthew Brett Rutland
  18. Brett Breakin' Rocks

    Carcharhinus sp. 02

    From the album: Sharks and their prey ....

    Carcharhinus sp. Savannah, Georgia

    © Matthew Brett Rutland

  19. Hi guys! I just uploaded a gallery of modern Carcharhinus upper dentitions: . The images are from my master's thesis (Smith 2015), the full text is available at (https://www.researchgate.net/publication/316735477_Species_discrimination_in_Carcharhinus_shark_teeth_using_elliptic_Fourier_analysis). Unfortunately, due to file size limitations, the images in the paper are not really good enough for detailed analysis of the morphology. So I have uploaded them individually here. I personally extracted the teeth from almost all of these jaws...If I remember correctly, they were soaked in isopro
  20. verydeadthings

    Carcharhinus leucas

    From the album: Carcharhinus dentitions

    C. leucas. Bull shark. Scale bar= 5mm.
  21. verydeadthings

    Carcharhinus falciformis.jpg

    From the album: Carcharhinus dentitions

    C. falciformis. Silky Shark. Scale bar=5 mm.
  22. verydeadthings

    Carcharhinus brevipinna.jpg

    From the album: Carcharhinus dentitions

    C. brevipinna. Spinner Shark. Scale bar=5 mm.
  23. verydeadthings

    Carcharhinus brachyurus.jpg

    From the album: Carcharhinus dentitions

    C. brachyurus. Copper shark. Scale bar=5 mm.
  24. verydeadthings

    Carcharhinus amboinensis.jpg

    From the album: Carcharhinus dentitions

    C. amboinensis. Java Shark. Scale bar=5 mm.
  25. verydeadthings

    Carcharhinus albimarginatus

    From the album: Carcharhinus dentitions

    C. albimarginatus. Silvertip Shark. Scale bar= 5 mm.
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