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Found 24 results

  1. probablypaleo

    Ramanessin Brook Shark Teeth

    The past couple trips to Ramanessin for shark teeth have been quite productive for the month of July, likely because of all the rain we've been getting. Note: these photos are not in any particular order. I started off grouping teeth by shared characteristics but quickly realized that 1) I do not know nearly enough to accurately identify these teeth 2) holy cow, there are so MANY of them and 3) it started raining outside while I was taking pics. I tried to include a couple close ups. Please let me know if you'd like a closer look at any specific tooth. Constructive criticism and commentary is very much welcomed and appreciated! Here we go, RAMANESSIN BROOK The same teeth are shown below in better quality but without the ruler for scale: Close ups of some teeth: Pile of teeth because I got frustrated and rained on while sorting And last but not least, ALL of my smaller tooth findings:
  2. Went back to Greens Mill Run with some more time for the second time this week. Found way more sharks teeth this time including some pretty exciting crow shark teeth. Need some help identifying this tooth or bone of some sort that is unbeknownst to me.
  3. Mikrogeophagus

    Squalicorax kaupi

    From the album: Ozan Formation

    Squalicorax kaupi, Fannin Co. Campanian, Cretaceous Dec, 2021 A favorite of mine from the NSR!
  4. Mikrogeophagus

    Squalicorax baharijensis

    From the album: Grayson/Del Rio Formation

    Squalicorax baharijensis, Denton Co. Cenomanian, Cretaceous Jan, 2023
  5. Mikrogeophagus

    Squalicorax priscoserratus

    From the album: Pawpaw Formation

    Squalicorax priscoserratus, Tarrant Co. Albian, Cretaceous Jan, 2023
  6. TheCreekendWarrior

    Summerville/Greens Mill Run side trip

    Better late than never right?! I'm finally getting around to sharing my finds from a recent trip up the east coast for work, with a few pitstops along the way! The first two images were from an all day hunt in a creek in Summerville, with Folly Beach Fossils! The third image are my spoils from a solo half a day in GMR... Right by elm street park, because the water was way too high to go further down stream from there, and I didn't have much time! What a great time finding a couple of new species and making a few more friends along the way! I cannot wait to get back up there and hunt again!!!
  7. ThePhysicist

    Cretaceous sharks

    From the album: Sharks

    Just a handful of Cretaceous species, most from North Texas. The sea that bisected North America ~85 million years ago played host to a diverse and burgeoning ecosystem that supported many species of sharks. It was likely due to specialization that allowed these sharks to all live in the same place and time.
  8. ThePhysicist

    Crow shark positions

    From the album: Post Oak Creek

    Reconstructed tooth set from a "Crow" shark - Squalicorax (could be S. falcatus) - illustrating the variety of tooth positions. Anterior teeth have erect, triangular cusps. Lateral teeth and posteriors are more common and have an increasingly posteriorly slanted crown, resembling the teeth of modern tiger sharks.
  9. Darbi

    Squalicorax sp.

    Recently I purchased these two Squalicorax sp. tooths from an auction website and both are currently on the way. I have a few questions about identification since I know very little about shark tooths and also please correct any misidentifications. Seller A sold me this tooth and it was listed as Squalicorax hartwelli. It is collected from Niobrara formation in western Kansas. Is Squalicorax hartwelli considered a variation of Squalicorax falcatus? Do you agree with seller A's identification above? Seller B sold me this tooth and it was listed as Squalicorax kaupi. It is collected from Lincoln Limestone member of Greenhorn Limestone formation. I suspect this tooth is misidentified and it should be Squalicorax falcatus, a paleobucket taxa for Squalicorax sp. variations. I thought Squalicorax kaupi is found from Santonian to Maastrichtian and Lincoln Limestone member is Cenomanian. I spent quite a bit looking up on here and Ocean of Kansas website comparing Squalicorax sp. tooths before posting! Although I am more confident in some of the members' identification skills than I am with mine. Regardless of identifications (or misidentifications), I am happy with both and is excited to have them arrive soon!
  10. historianmichael

    Squalicorax kaupi

    From the album: C&D Canal Micro Fossils

  11. ThePhysicist

    6/17/21 Trip

    From the album: Post Oak Creek

    Nothing extraordinary, but I found an area with several chunks of matrix with teeth in them.
  12. Over the Columbus Day weekend, I planned to make a trip up from Virginia to New Jersey to visit my mother and other family. The trip offered the opportunity to check out one of the cretaceous sites in NJ that I have read about so much here--and that my son has been begging to visit for, like, a year. Never having collected there, I reached out to forum members @Trevor and @The Jersey Devil for any suggestions they could offer to a couple of cretaceous creek newbies and they really came through! (Thanks, again guys!) With tips in hand we arrived at our collecting location early on Sunday, hoping to stay ahead of the rain that was forecast from the remnants of Hurricane Delta. Water conditions were very good, with low and clear water and plenty of dry bank to move around, and the air temps were in the 60's, so it ended up being a perfect day for collecting. My son wanted a mosasaur tooth, of course, but my goal was just to find a nice crow shark tooth, as I think they are super cool and unlike any shark teeth we have down here. We kind of knew a couple of areas to try, so we set out to the farthest one, figuring to get the longer hike out of the way first. We had our screens and shovels, but we didn't really know exactly the best places in the creek to try in terms of the current / gravel / silt / mud mix that would hold the best fossils. We set out to learn by trial-and-error. The first hour or so was a bit discouraging. Despite knowing we were generally in the right place, all we had come up with was a couple of very small, broken tooth fragments. But we kept at it, moving around a bit and changing the material we were working. It wasn't too much longer until we saw the sight every collector wants to see.
  13. ThePhysicist

    8/16/20 Trip

    From the album: Post Oak Creek

    Didn't find much this time. I don't think it's rained in a while - the water looked stagnant. Also was picked over well. Favorite find is the mostly complete Cretodus (found it under a fallen tree).
  14. BlueFire0044

    Just bought some fossils:)

    I ordered 3 Mosasaurus teeth, 1 Crow shark tooth and 1 Enchodus tooth. Do they seem real? And do they have any signs of restoration?
  15. Chase_E

    Squalicorax pristodontus

    From the album: Maastrichtian Shark Teeth, Volgograd Oblast, Russia

    Squalicorax pristodontus (Agassiz 1843). Slant length indicated by longest side.
  16. ThePhysicist

    Squalicorax sp. Shark Teeth

    From the album: Post Oak Creek

    Typical crow shark teeth from POC.
  17. After the Hybodontids, our program starts to transition toward the modern sharks. We introduce lamniform sharks and the cow sharks. We will not be able to spend much time at all on the Cow and Crow Sharks. They only get a brief introduction and a look at the teeth. Squalicorax is an important species for us even though we do not spend a lot of time on it. The students in first few classes we do presentations for will be going home with Squalicorax teeth from Morocco. We would like to spend more time on the Cow sharks eventually but we only have one tooth to show them and we will have to edit content to free up space for them but I will work on that down the road. The primary focus in this section is Scapanorhynchus. The first shark art Carter did was a Goblin and we do give them a lot of time in the presentaton. They look cool and have been around for a long time. We present the kids with a nice assortment of teeth and some cool science. The teeth were important adaptations for catching fish and the snout had the ampullae of Lorenzini for sensing changes in the electro magnetic fields around them. We compare this to the modern hammerhead which we do not cover in the program but gives the kids a sense of how the adaptations of hammerheads work. We also talk about fin structure and being able to tell they were slow swimmers. The extend-o-matic jaw is another adaptation we cover with this species. I am happy with the fossil representations for now though I really want to add more Cow Shark fossils at some point and Anomotodon would also be a good addition. The fossils for the presentation.. Pic 1 Hexanchus andersoni from STH. I know H. andersoni should chronologically fit later but Cow Sharks fit here and this is the only one we have for now. Pic 2- Squalicorax pristodontus from Morocco. This is our largest Squalicorax tooth. The kids will get these teeth to take home so while we do not spend a lot of time on them, the teeth are very important to the program. Pic 3- Scapnorhynchus texanus and Scapanorhynchus puercoensis. Our nice little Goblin Shark display with some of our best teeth. Two of the texanus teeth are over 1.5 inches and the puercoenisis teeth are uncommon I believe and pretty super cool.
  18. After stuffing my face into tons of scientific articles on Late Cretaceous Lamniformes, I decided that I'd want to draw some sharks. Here's a drawing of the two infamous sharks of the Niobrara Formation Cretoxyrhina mantelli and Squalicorax falcatus as partners-in-crime. I've made the Cretoxyrhina ≈6-7 meters and the Squalicorax ≈2 meters. As 2 meters would be the same size as a very tall 6'6" human, you could imagine the Squalicorax as the tallest ordinary human and see how much bigger Cretoxyrhina is. I've always felt like Squalicorax would commonly accompany predators like Cretoxyrhina to "help" strip bare the latter's kill (Crow sharks are indeed inferred by scientists as opportunistic feeders or scavengers), almost as if Ginsus had them as little cronies. Also, the common name Crow Shark sounds somewhat similar to crony. Now what if we started a new nickname for Squalicorax as a crony? That would be hilarious and maybe realistic. EXTRAS
  19. SerratedTeeth

    Our trip to GMR

    So we finally made it out to GMR to do some hunting. We left Greensboro about 7 am and arrived around 9:15. We walked around for a little bit to scout some areas, and finally found a good starting point. It was slow at first, but we started making really good progress when I found a 2" goblin shark tooth. We continued on throughout most of the day finding tooth, after tooth, after tooth... We found several Meg fragments, some super nice great whites, mako's, 3 mosasaur teeth (the smaller round one might possibly be a crocodile but were not 100% sure), and quite a few belimnites. After we finished for the day we stopped by @powelli1's house so he could check out some of our finds. He's a great guy and has an absolutely amazing fossil collection. When I say he has 15,000 fossils in one room, I'm not exaggerating whatsoever... He helped confirm the ID's of some of our finds, and was kind enough to give us a tour of his collection in the process. After heading home we decided to photograph some of the nicer finds and count everything we brought back. All together we had 944 shark teeth, 3 mosasaur (except if that smaller round one is not a mosasaur tooth), 1 unidentified fish tooth, and 59 belimnites. Here's some photos of everything we found today.
  20. sixgill pete

    Crow Shark

    A nice example of a Campanian aged S. pristodontus. Though not as large or as nicely preserved as many of the Maastrichtian examples, a nice tooth.
  21. kirk

    GMR last week

    Finally made it up to GMR last week. Was greeted by this as soon as I entered the stream/ditch. Once I got around this mess it was not too bad. Hunted pretty hard with not much to show for it. For me my favorite finds were the crow shark teeth, nice tiger shark and a dolphin tooth.
  22. JeezLouise

    My First 2 Pieces Arrived!

    My first 2 pieces arrived today and I could not be more pleased! The Crow Shark tooth was a free little surprise with my Megalodon.
  23. Hello. I am just joining. My friend and I have been collecting in Frankstown Mississippi in a site rich in fossils. We have quite a collection of fossilized Goblin Shark teeth and several Crow Shark teeth. I will put up pics on the site here for everyone to see and discuss. Thanks, Jeff in MS
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