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Found 23 results

  1. I have a question for you all pertaining to a Squalicorax kaupi tooth that I found while hunting with Frank at Ramanessin brook this past summer. I have hunted in thebrooks a fair number of times over the years and have collected a good amout of Squalis in that time. The tooth in question has a feature that I have not seen on any of the other teeth that I have found. Located on the mesial side of the root lobe there are serrations. I wouldn't really call this a cusp per se. I assume that this could be a feature that could very easily be worn off by the nature of being tumbled in the brooks. I have not seen, heard mention of, or read anything about this feature in the past. So my question is, has anybody else seen this, or could this hold some scientific value?
  2. Asking for more squalicorax help

    I have done some more research on the squalicorax that I posted about a few weeks ago. I ended up examining 886 teeth or fragments thereof. Of these, 79 showed a fossilization process in which the serrations (and sometimes the whole cusp) was covered with a white mineral. 48 were so worn that sometimes the serrations could barely be made out. 254 were too small or fragmented to be of any use (which does not preclude that they were of the same species as the rest). The remaining 632 all had the ornamentation that is so unusual. They can be found only on the labial side of the cusp (forgive my previous posts saying that they were on the lingual side...a stupid mistake on my part), and the majority are on the mesial edge of the cusp, although a smaller percentage have the ornamentationon the distal edge, and even fewer have them on both. . There are three types of ornamentation, the least common being a horizontal band below the top of the cusp. The second type consists of a small circular indentation, and can be found anywhere on the serration. The most common is a vertical triangle, with the apex of the triangle towards the top of the serration. I have no clue as to whether this is due to ontological heterodonty, sexual dimorphism, placement within the jaw, or something else. If anybody could check their S. falcatus examples (the closest that these teeth resemble), or any other Coniacian squalicorax, and see if this ornamentation is found beyond the fauna I am working on. I have corresponded with Mike Everhart (Oceans of Kansas), and this is new to him. All help will be greatly appreciated! I will post two pictures here, then two more immediately after. Thanks again! Randy
  3. 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
  4. Squalicorax Tooth

    From the album North Sulphur River

  5. Brooks of NJ

    Been going to the brooks of NJ for over a year now so once I go through my phone I’ll post some more pics on top of my better finds from there. Today I was fortunate to meet @Trevor and do a little hunting with him. Thanks for showing me some new spots and techniques. Didn't have the best of days but went home with quite a few. Not quite sure what this is. I think it might be a part of a ghost shrimp but could be a concretion. Hopefully @Trevor will post his finds from today in here. All are more than welcome to share experiences and their trips in here also. Thanks for looking - Paul
  6. In late February I went to a site in the Middle/Upper Santonian stage of the Bruceville Chalk Marl Formation, Austin Group, in Ellis county, Texas. While at the site I found a few inoceramids, possibly an anaptychus, and a chunk of rock that looks like it could have mollusk grazing traces on it. Then today I was organizing my collection and picked up the rock with the possible grazing traces. While I was handling the rock I happened to look at the bottom of it and spotted a small Squalicorax sp. tooth, my first tooth from the Santonian. It is 11 mm long and is pretty complete, with the left side of the root being exposed. I am not sure about the right side of the root, but it may still be there under the matrix. I have been trying to put it to a species. From looking through Welton and Farish’s book as well as elasmo.com the most likely candidates seem to be the two paleo-buckets S. “falcatus” and S. “kaupi,” and the species S. lindstormi. I am not terribly familiar with fossil shark teeth, so I am very curious what the more informed members of this forum can say about what species this could be. I am also wondering if the first picture could be of mollusk grazing traces. Would it be a good idea to try to prep it out further? And if so, what would a good strategy be with chalky/marly matrix? FIG 1: Possible mollusk grazing traces on the top of the rock. FIG 2. FIG 3.
  7. New paper on Squalicorax

    New paper out on Albian-Turonian Squalicorax from Australia, including three new species. https://www.tandfonline.com/doi/full/10.1080/03115518.2018.1462401
  8. NSR Binge

    Hi y’all, I’ve been hurting for some good fossil hunting since moving to Memphis and as luck would have it a job put me within 3 hours of NSR. Not to mention the water level reports from last week that I’ve been salivating over. So I hopped in the car and managed to get out and hunt last Friday, Saturday with 2 friends, and Monday.(Sunday I went to Post Oak due to weather lol). Water is still pretty high in most areas and some serious water hiking had to be done to get to the bars. I went in twice and my buddy went all the way in. Most areas where I hunted were undisturbed and fresh for the picking.
  9. Squalicorax ???

    I have recently purchased an associated Squalicorax tooth set from Gove county, Kansas. It is Coniacian in age. However, I have no idea what species it is. These teeth are too gracile for S. falcatus and S. baharijensis. Looks a little bit like S. volgensis, however teeth are too large for it. Any help will be very appreciated.
  10. Eutrichiurides prep

    Recently acquired this piece of rock with some jaw segments, vertebra and teeth in it along with a squalicorax tooth. What is the best way to prep it for display? Should I just leave it alone?
  11. 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.
  12. Squalicorax kaupi

    Found in phosphate-rich chalk layer of the Late Cretaceous.
  13. Squalicorax

    Found in Morocco. Late cretaceous in age. Specimen is almost complete.
  14. Squalicorax

    This fossil is around 70 million years old. It's 2.25 cm in height. Specimen is 100% percent complete.
  15. Shark Tooth: Squalicorax???

    Hello there! I recently purchased this tooth. It comes from Khouribga, Morocco (Maastrichtian stage)... It looks like a Squalicorax, but I'm not sure. Help? Thanks a lot, Max
  16. Squalicorax tooth

    Tooth of a shark.
  17. Squalicorax kaupi

    Collected in gravel in the North Sulphur River near Ladonia, Tx.
  18. From the album GMR Finds

    Conservation Status: Extinct Scientific Classification: Family: Anacoracidae Genus: Squalicorax Species: TBD Fossil Period: Late Cretaceous Epoch (70 to 83.5 million years old) Fossil Formation: Pee Dee Formation Formation: Yorktown (within Greenville, NC) Formation Period: Late Miocene to Early Pliocene. Found: November of 2015 at GMR in Greenville, NC
  19. Late Cretaceous Shark Teeth

    From the album Most of my collection

    A small selection of Late Cretaceous Campanian shark teeth, and a fish vert.
  20. Hello, it has been a long time since I was on the Forum; glad I finally have time from work for it. I have found one site here in Wyoming where I find Hybontid (don't know if I spelled that right) and only a couple examples of other types. A possible site that I have really been wanting to check out is on a ranch just west of me and after asking about once per year the owner at last caved in and let me look. I normally look for dinosaur related material and that is what I was expecting here. As I was walking to the area I wanted to check out I came across an exposure of sandstone and it has a layer of shells and gastropods running through it. I did not go to find that types of fossils so I looked real quick and moved on. I did find one shark tooth in this spot. I got to the site; and found nothing. I could not believe it. So, I went and followed strata that I found the shells and shark tooth and started finding more stuff. Shark teeth lying on the ground and just eroding out of the sandstone. I found some really nice oyster shells, few snails and mixed in were a few pieces of bone and other stuff. I found one block of rock that was loaded with fossils and there was a Mosasaur tooth in that had been exposed for a long time and was in a lot of pieces. It was more than 2" long but the only part still completely intact was the tip. There were four nice long straight ammonites there also with the biggest being about 8" long. Enough rambling. I will post some of the pics of the first day I was there, I found 17 but will only show a few.
  21. I was poking around in a Texas site looking for my very own Mastadon Molar, with which CreekCrawler has so recently shamed us all. I did not find any elephant parts, but I did find a pretty cool Pliestocene Equus tooth - cheek tooth I think. Does anyone have a link to a good Pleistocene/Oligocene/Miocene Mammal tooth website or a good reference book? In Situ Reverse side Top pattern Huge Squali This is the most complete Globidens tooth I have found - about 75% there. Most of the back is missing unfortunately. One Crab that may have a pincher intact. I will explore the matrix later. Happy fossiling! Jon
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