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Found 48 results

  1. Otodus obliquus?

    I found the tooth below this morning at Douglas Point (Aquia Formation, Paleocene) in Maryland. The cusp is fairly narrow, it's missing one cusplet and the other is small and/or worn down. But between the prominent lingual protuberance and what looks to me like a small bourlette, I'm getting an Otodus obliquus vibe. What do you think? I also found a tiny Cretalamna appendiculata -- just over a quarter of an inch.
  2. I’ve recently bought some fossil shark teeth online to expand my collection beyond the local Maryland fauna (Miocene from the Calvert Cliffs and Paleocene from the Potomac River/Aquia Formation), and it occurred to me that perhaps there are some forum members who would be interested in sharing some of your finds or extras in exchange for mine. The things I have to offer are shown below—mostly fossil shark teeth and a few other things. These aren’t all perfect, but there’s a good variety, including some less common species. I’ve collected most of these myself and have also listed a few purchased teeth for trade. If there’s something that interests you, hopefully we can help each other build out our respective collections. I have particular interest in adding Ptychodus sp. and Cretodus sp. teeth from the Cretaceous to my collection, but I’m open to a broad range of offers. U.S. trades are likely easiest for shipping, but I’m happy to consider international offers too. Thanks for looking! Quick summary of shark teeth available for trade by species (also see photos below): Miocene from Calvert Cliffs - Alopias latidens (2), Carcharhinus sp. (5+), Carcharodon hastalis (1), Galeocerdo aduncus (2), Hemipristis serra (4), Negaprion eurybathrodono (5), Notorynchus cepedianus (1), and Physogaleus contortus (4) Paleocene from Potomac River/Aquia Formation - Anomotodon novus (2), Cretalamna appendiculata (2), Palaeohypotodus rutoti (3), Paraorthacodus clarkii (1), Striatolamia striata (4+), and unidentified sand tigers (4+) Miocene-Pliocene from Purchases - Carcharocles megalodon (1), Carcharodon hastalis (2) I. Shark Teeth Available for Trade A. Miocene shark teeth from the Calvert Cliffs (unless otherwise noted): Alopias latidens (thresher shark) - both pending Carcharhinus sp. (gray sharks) – I also have others available. The tooth on the far right is from a Miocene exposure in Virginia (Westmoreland State Park). Carcharodon hastalis (white shark, predecessor to the great white) Galeocerdo aduncus (tiger shark) – The smaller tooth on the right is from a Miocene exposure in Virginia (Westmoreland State Park). Hemipristis serra (snaggletooth shark) - tooth A is pending Negaprion eurybathrodono (lemon shark) Notorynchus cepedianus? (sevengill cow shark) – This is most likely N. cepedianus though it’s a partial so I don’t know if it can be definitively ID’ed. Physogaleus contortus (tiger-like shark) B. Paleocene shark teeth from the Potomac River/Aquia Formation: ** I’ve done my best to identify the various sand tiger shark teeth below, but I may have made some mistakes. Anomotodon novus (goblin shark) - both are pending (though I also have others) Cretalamna appendiculata (mackerel shark) - tooth B is pending Palaeohypotodus rutoti (sand tiger shark) – I am pretty sure these are all P. rutoti due to the presence of basio-labial folds (see this elasmo.com page), but I could be wrong. Paraorthacodus clarkii (no common name shark) - tooth is pending Striatolamia striata (sand tiger shark) – I have others available too. - teeth A and D are pending Other non-striated sand tiger shark teeth – I’m unsure of the species on these; some may be Hypotodus verticalis. I have others available too. - tooth C is pending C. Purchased shark teeth available for trade: Carcharocles megalodon – This tooth was collected by a diver from the St. John’s River in Florida and measures a little over 2.75” slant height. I believe these are both Carcharodon hastalis – They are from an estate sale and their original collection location is unknown. They measure 1.7” and 1.2” slant height, respectively. II. Other Fossils Available for Trade A. Miocene from the Calvert Cliffs: Ecphora gardnerae? (gastropod) – If this is E. gardnerae, it’s also Maryland’s state fossil. Drum fish teeth Ray crushing plate fragments – The two v-shaped ones on the left are Aetomylaeus sp. and the other two may be as well. I have others available too. - plate B is pending Fossil corral – I believe these are Astrhelia palmata. I have others available too. Fossil sand dollar fragments – I have others available too. B. Paleocene from the Potomac River/Aquia Formation: Ray crushing plate fragments – I have others available too. Turritella sp. steinkerns/casts – I have others available too.
  3. Eagle ray tooth plate partial?

    Found this partial ray tooth plate in January while fossil hunting in the Aquia Formation along the Potomac River. Does this look like Myliobatis dixoni to you? I am terrible at identifying ray teeth, so really not feeling certain about that ID.
  4. Aquia Formation bone fragment

    Hi all, I found this chunk of bone at Purse State Park this November. It is from the Aquia Formation, which is of Paleocene Age. I was wondering if it could be identified to either crocodile or turtle, considering that these are the only two bony vertebrates that exist in large amounts in this formation. Or, of course, it could be nailed down to chunkosaurus status considering that it is relatively worn and isn’t very large. Thanks in advance!
  5. For years I’ve had my macro fossils in drawers and my micro fossils in gem jar displays. Recently I’ve started putting some of my macro fossils in 8”X12” Riker mounts. Below are the Riker mounts that I now have. I’ll probably put together at least twenty of these. Below are two Riker mount displays with specimens from the Paleocene Aquia Formation from the Potomac River in the Liverpool Point, Maryland area. This display contains in the top crocodile vertebrae, a couple of crocodile leg bones, and two crocodile coprolites. I have larger crocodile vertebrae but they are too large for these Riker mount displays. Then a row of crocodile teeth (for size reference the largest partially rooted tooth is 2”). I have over 200 crocodile teeth from the area but the vast majority are fairly small. Then on the bottom there are turtle shell pieces and a crocodile scute. This display contains in the top ray dental plates and a ray barb. I have a lot of very nice very small ray dental plates but the larger ones tend to be damaged/beat up. Ray barbs are not really that common from the area. The middle has a few Otodus obliquus teeth and a partial vertebra. The day I found that partial vertebra, a person that I took to the site for the first time, found a complete, perfect one of the same size. For size reference, the anterior O. obliquus tooth is just less than 3”. I have over 700 O. obliquus teeth from the area but the vast majority are water worn and/or have damaged root lobes, cusplets, tips etc. I believe that these sharks ate a lot of turtles which took a toll on the teeth. At the bottom are a couple of chimaera mouth plates and a fin spine. I have at least 110 smaller chimaera mouth plates in my gem jar displays. The next two Riker mount displays contain specimens from the Eocene Nanjemoy Formation of Virginia. I posted one of these awhile back here on TFF but I’ve rearranged it as I’m now putting more of my specimens in Riker mounts. This display contains on top a few of the larger coprolites that I still have from the Nanjemoy Formation. I’ve already donated over 20,000 of these to the New Mexico Museum of Natural History and Science. I’ve accumulated another 30,000 since my last donation in 2015. Then there is a row of sand tiger teeth two inches and larger. Then there is a row with additional sand tiger teeth and two Otodus obliquus. O. obliquus are not common at all from the area. I’ve only found five in over 165 trips to various sites in the area. Then there are two sawfish rostral spines/teeth and a sawfish vertebra, and a ray mouthplate and medial tooth with several ray partial barbs. On the bottom are three associated fish vertebrae, a small fish jaw, fish spine, and then two fish teeth. This display is a work in progress. I’m putting some of my larger reptile specimens in it. The bottom rows have two turtle lower jaws, turtle shell and a turtle bone. I have lots of other turtle shell pieces so what’s in this display is only a representative sample of what I have collected from the area. The next row contains sea snake vertebrae. I have over 100 of these so I’ll add a few more to this display. My largest, 1.5“ thick won’t fit in this display. At the top are three rooted crocodile teeth, a partial crocodile scute and a small crocodile vertebra. At some point in the future I will post more of these Riker mounts as I finish them. I’m also thinking of putting together a number of artificial shark tooth dentitions and mounting them in Riker mount displays I have several hundred thousand shark teeth from the Nanjemoy so I should have most of the positions for a number of different shark dentitions. Marco Sr.
  6. Otodus from the Aquia Formation, Maryland

    From the album Tertiary

    Otodus obliquus Mackerel Shark Tooth Paleocene Aquia Formation Douglas Point Charles Co., MD.
  7. From the album Tertiary

    Shark Vertebra Paleocene Aquia Formation Douglas Point Charles Co., MD.
  8. From the album Tertiary

    Crocodile scute Paleocene Aquia Formation Douglas Point Charles Co., MD.
  9. Mystery Shark's teeth

    Hello, These are also from our hunt in the Aquia formation of Charles Co. MD. Sharks of the world didn't give me much insight. The only species that I noticed where the enamel extends out on to the roots like this is the extinct goblin shark Anomotodon novus. I definitely have some teeth from that species I think but these are substantially different. These are larger, more robust and the have the cool extended enamel and bumps/cusplets on the shoulders of the labial side. Any thoughts?? (ruler in mm and squares 1/4") Kate
  10. Stratolamia striata?

    Hello, I am new here and new to fossil identification. These are shark teeth from the Aquia formation on the Maryland side of the Potomac. They come from Charles County. I have shark teeth of the world and so my IDs are based on that and the internet. I think all of these are Stratiolamia striata based on the grooves. Ruler is in mm and squares are 1/4" on each side. The last picture with only 2 teeth nearly touching seem different to me in that the striations don't extend very far up onto the teeth (unlike the others where they cover much of the crown. I am not sure if S. macrota also occurs at this site?? They are supposed to have striation only near the root. I have more from this trip but limited time so it will have to dribble out. Thanks for your time, Kate
  11. Hello All! I found this shark tooth at Purse State Park in Charles County, MD. Located on the Potomac River, these fossils are from the Aquia Formation. As a novice fossil hunter, I would love some help in identifying this tooth. Is this a Cretolamna sp. (appendiculata?) or Otodus obliquus? Thanks so much in advance! ~Natalie
  12. Purse State park tooth to ID

    A couple of weeks ago I stopped by Blue Banks, just north of Purse State Park MD. The Paleocene Aquia Formation is exposed there, and teeth and bones of a variety of species erode from the exposures and accumulate in gravel along the shore. Unfortunately the Potomac River was in flood stage, so the gravel along the shore was submerged despite the low tide. A driving rain storm did not help matters. I scooped gravel and passed it through a couple of screens, and recovered a handful of the usual small sand tigers and ray teeth, before calling it quits after an hour or so. The following was the largest tooth I collected by some margin. I don't see anything like it on Elasmo.com. There are no serrations and no cusps. Any suggestions for an ID would be most welcome. Don
  13. I found eight of these huge Cucullaea gigantea fossils yesterday! Anyone fancy a trade? I'm interested in vertebrate material, or really anything that is capable of swimming, flying, or crawling. Matt
  14. So, I found this today in the Paleocene Aquia Formation of Maryland. Obviously it can't be an ammonite, because they were already extinct. It's a Nautilus steinkern, right, not some sort of gastropod? Thanks! Matt
  15. Tooth ID

    Hey everyone! I found this particular tooth at Purse back in March and have had no luck IDing it. Any ideas? I'm loving the colors on it though. The other side has an awesome dappled grey appearance.
  16. Otodus obliquus

    Three specimens acquired from a trade with @gavialboy Specimens are from an undisclosed location within the Aquia Formation linked to Purse State Park.
  17. I was able to spend a couple of hours out on the river today after work, nothing spectacular but I enjoy every chance I get to play in the water. I went to an area that I haven't been to since last fall, it amazed me to see how much things had changed in that time period. I ran into a box turtle on my way down to the river, love seeing these dudes. On my way back out I had to wade past a bush and got startled when a 3 foot water snake took off out of the bush. My box turtle buddy. Total haul Some of the better ones My favorite from today, love the curve.
  18. Unproductive Paleocene hunt

    I was going to go hunting with a relative at his property, but he was away. Having already driven to Annapolis, i decided to try to find another place to hunt. I found a place within the Paleocene Aquia formation. There was no macrofossils, other than a shell piece, which may not be a fossil (although I would then wonder how it got there, I was a long way from the water). There was a ton of these (ironstone?) Concretions in the sandstone. I'm breaking down some sandstone with water and manual labor, when the sand drys out, I'll see if I can find any microfossils. This is my first experience with microfossils, and I don't have a good microscope, so a magnifying glass will have to do. I also found two (oyster?) shell pieces on an eroding mound of sand, presumably a more recent (but still old, it's way above sea level so it's at least a few hundred or thousand years old) sand dune. They are worn, but I don't know if they somehow they got up there anthropengenicly, or if they are fossils. I'll use this thread for microfossils if I find any microfossils.heres some of the stuff I found, starting with the shells, the first is the one possibly from the Aquia.
  19. Thanks to Facebook I realized the 1 year anniversary of this hobby obsession was on July 2nd. I haven't been out in the past couple of weeks due to overdue chores around the house...I hate it when adulting gets in the way of having fun! Anyway, after 5 days off for the holiday weekend, I really wasn't looking forward to going to work today...especially since I had to cross the river to the Maryland side to take care of some things at my home base. As I was getting ready to leave this morning, I decided to throw a pair of shorts and my water shoes in the car just in case...I wasn't expecting to get out early but you never know. Well, I was glad I did since I was out of there within 3 hours...off to the river I went! I showed up just before low tide and quickly headed out. I wasn't expecting much after the holiday weekend, in fact, I was expecting a crowd when I showed up. I was shocked to find out that I was the only one on the beach...and the low 80s temperature and overcast conditions made it quite nice for collecting. Within 20 minutes I had found a croc tooth and an Otodus, I was pleasantly surprised. I kept moving along and in a particularly silty area, I spied a piece of a tooth. I reached down and grabbed it and was shocked to see that it was a Paleocarcharodon Orientalis! My first one! Happy dance!!! I walked a couple of miles and was pretty happy with the finds, it truly is a great place to take kids as everyone finds teeth there. Some in situ shots: I wish I would have taken a picture of this in situ...but I quickly took a picture when I saw what it was! Total haul: Paleocarcharodon Orientalis, front and back. Couple of Otodus. Croc tooth I'm thinking turtle on this...front and back pictures.
  20. Unlike the success that @WAHAMA90 had yesterday, we were not as lucky. There was hardly any beach to search when we arrived, the winds from the past couple of days had packed the water into the Potomac. After driving 90 minutes, we didn't let it deter us and went out anyway. We brought along a contractor trash bag to help clean up the river and unfortunately we filled that full pretty quickly with mostly recyclables. The shark teeth were not as easy to come by as the trash...and when we did find them, they were small. Funny moment of the day was when I found a decent Otodus tooth, I held it up to show my wife and it slipped out of my hands into the river. Oops! Well, on the positive side, I'll get to use my new digital microscope to check out the tiny teeth and we can honestly say that we did something on Earth Day. Total haul of teeth: A waterlogged knucklehead dumping the trash: Total haul of trash:
  21. Unknown Aquia Fm Teeth

    Finishing up trying to ID some finds from the Fall at Purse State Park in Charles County, Maryland. These presumably are from the Paleocene Aquia Formation. This is my only collecting trip there so far. I think that #1 is a crocodile tooth, #2 is a turtle scute, #3 is a claw or tooth, and #4 and 5 are fish teeth. Please school me Fossil Forum. More of #4 and 5 More of #3
  22. I went back to Purse today with my wife, you just have to love it when you play at the river in February and only have to wear a sweatshirt. We didn't find anything spectacular but my wife did find a Otodus frag that would have been absolutely spectacular had it been whole. The total haul, some nice glass today too. Otodus frag...this would have been a beast if it was whole! Pretty cool looking sand tiger. Croc tooth...found this sitting high and dry as I was walking fast to get to where I wanted to search at. I see you! Although it was warm today, there were some neat icicles hanging down.
  23. I met up with Boneheadz to do a hunt together at Purse and I'm glad that we did, nice to have a fellow tooth nut along for the hunt. Great day to be on the river too, pretty warm and the Potomac was extremely calm. We got to the river about 2 hours after high tide and headed out. We both went further downriver than we had ever gone before, scanning the beach and poking around the newly fallen matrix. I can't say it was a banner day for finds but as usual, the finds were consistent. After three hours of searching, we left the river with the tide still an hour away from being low...always next time! Here are my finds, Boneheadz will post on here later with his finds. My total haul. A first for me, a piece of matrix with a tooth in it. Otodus, too bad the biggest one was damaged. On the way back, I looked out over the marsh and spied an eagle's nest. I love seeing the eagles along the river.
  24. From the album Tertiary

    Paraorthacodus clarki (shark tooth) Paleocene Aquia Formation Douglas Point Potomac River, MD.
  25. From the album Tertiary

    Otodus obliquus (mackerel shark tooth) Paleocene Aquia Formation Douglas Point Potomac River, MD.