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  1. PrehistoricWonders

    Maryland shark tooth

    Hi, I was wondering what these two shark teeth are. Any ideas? They were found in Maryland at purse state park.
  2. HemiHunter

    hunting the lower Potomac

    I took a trip to the lower Potomac 4/29/20. I found plenty of fossils including this 1 15/16" C. Auriculatus, a 1 7/8" Striotolamia striata, a 1 3/4" C. Megalodon, And a 3/4" crocodile vertebrae. The Auriculatus and the meg were pretty worn. But I found all of these fossils two hours, and a big tooth is a big tooth! I'm happy to take them either way. The croc vert was a bonus.
  3. Before quarantine took effect, I had a chance to visit Purse State park. I normally frequent Brownie Beach, but the recent cliff collapse forced me to try some other spots. I was also interested in finding some much older fossils from the Paleocene formations along the Potomac. I found tons of turritella gastropod molds, and many smaller lamnid teeth. Some of the larger ones I found were pretty easy to identify as Striatolamia species, most likely S. macrota that had slight surface wear from being washed around in the Potomac. Most teeth from this location seem to be similarly eroded, and almo
  4. Help request! I am putting together a tool for judging rock age based on very crude, whole-rock, hand-sample observations of fossil faunas/floras -- the types of observations a child or beginner could successfully make. I view this as a complement to the very fine, species-level identifications commonly employed as index fossils for individual stages, biozones, etc. Attached is what I've got so far, but I can clearly use help with corals, mollusks, plants, vertebrates, ichnofossils, and the post-Paleozoic In the attached file, vibrant orange indicates times in earth history to com
  5. Hi everyone, My son and I were lucky enough to get out in the Potomac before Maryland and Virginia issued stay-at-home orders. Guess our hunting is on hold for the time being. It was a beautiful spring day. The wind kicked up late and kind of nullified low tide, but quite enjoyable anyway. I though I’d share a few pictures. I included a closer shot of 2 types of teeth we had not found there before. They look more like Miocene finds from the Calvert Cliffs area. I also included what I think is a vertebra and a few interesting teeth from a trip last week.
  6. cowsharks

    Jaekelotodus or Paleohypotodus

    Curious to know the ID on these teeth. They were found some time ago in Maryland from a Paleocene location and both are about 3/4" long. I was initially thinking they might be Jaekelotodus robustus, but not 100% sure because Paleohypotodus rutoti looks a little similar. Unfortunately elasmo.com doesn't have any examples of Maryland specimens of J. robustus for comparison. Your thoughts?
  7. hokietech96

    Potomac River Trip

    Made my second trip back to Douglas Point on Wednesday. The weather was sunny and a little over 60 degrees. It was a perfect 3+ hours of sifting and surface searching. I had the entire beach to myself. The only negative to the day was the 4 hour ride home. Usually takes me 3 hours. I was hoping to find my first croc tooth but I will not complain since I found a nice otodus. Otodus Obliquus
  8. We've had a couple nice hunts in the Aquia recently. Our first trip was really nice. The weather was beautiful and the tide was low. The only finds of note from this trip were two shark vertebrae and a small yet pristine transitional otodus. As always, we found over a 100 teeth in the gentle shallows. Our second trip was incredibly productive, albeit with fast moving water and a high tide on a beach ravaged by storms. We found what I think is a turtle washing out of a recent fall; I was unable to spot the rest of the turtle in the fall, however we were able to grab five pieces of mat
  9. Petalodus12

    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!
  10. Hi guys I’ve found some stuff online that’s related to abbey wood but no full informative book, does anyone have any sources or book recommendations thanks
  11. FossilsAnonymous

    A Cold Trip Down In The Aquia

    Today was our first trip to a hunting spot in the Aquia Formation. We had no idea what to expect from this location, but believe me, we were not disappointed. After three hours of walking the beach and sifting, we managed to leave (when the rain started) with some really nice pieces. I managed to grab what would have been a beauty of an Otodus except for the fact that it was snapped in half, some Ratfish material, one of the teeth i've been hunting after for a while, Jaekelotodus Robustus, a croc tooth, an angel shark, and a multitude of large Striolamnia Striata. MomAnonymous got
  12. whitmanrr

    What is this?

    Grandson found this in an outcrop of immature sandstone in the proximal fluvial facies of the Paleocene Fort Union Formation in Park County, Montana. My current guess, based on the age of the outcrop and the depositional paleo-environment, is that it is a fossil plant, although it doesn't look much like one.
  13. DeepTimeIsotopes

    Paleocene Dinosaurs

    So I was looking through some “older” papers and found this one by Rigby et al. (1987)(pdf attached). They were looking at some of the rock formations specifically members of the Hell Creek Formation. In one area, they have a lot of river deposits from before and after the K-T boundary. In one of the river deposits from the Paleocene as dated by pollen fossils, contains ungulate mammal fossils and some dinosaur teeth specifically ceratopsian and theropod teeth as far as I understood. They recognize that the dinosaur fossils could have been eroded from the bank and fallen in but the fossils are
  14. New Paleogene mantises from the Oise amberand their evolutionary importance THOMAS SCHUBNEL and ANDRE NEL Acta Palaeontologica Polonica 64 (4): 779–786. schuNELinsemantilagersthexapoapp006282019.pdf @Coco @fifbrindacier
  15. A few pics from my 1st and only day at Purse State Park. I'm not really sure what I have here but would love to hear from you guys. I tried to group them with similar teeth but I'm sure I mixed a few. Sorry for no scale in the photos. I'll have to get a flat ruler for the future I guess. All teeth were between1/4" and 3/4" more or less. And I may have some of the same teeth in different pics. Thanks for looking. Andy
  16. I had been wanting to get back to the Calvert Cliffs since my 1st trip there in early 2018. I had the Thanksgiving weekend off and the weather forecast looked good for 3 days so I went. It was beautiful weather down there for hunting. Honking winds blew the water out of the bay the first 2 days but you couldn't feel it behind the cliffs. It did make for some hard hunting. But I had 3 days and nothing else to do so I got down on the ground so I could see what I was looking at and mostly just sifted through the dry shell material. I didn't have high hopes but it was beautiful to be outside. And
  17. What do y'all think these are? They're bits of debris from a slide I was working on. All I can really tell you is that they were photographed at 40X magnification, scale bar 50 microns. This set of slides is across the Paleocene to Eocene, but I unfortunately don't know what rock this single slide sample is from. Sample is from the Hanna Basin in Wyoming.
  18. fishmore5

    Croc tooth? Aquia formation

    Hello all, first post on the forums despite joining awhile ago. Last winter I was fortunate enough to have some serious luck at Purse State Park in 2 consecutive trips while I was on break. Thanks to @Williamb55I was able to finally muster some motivation to seek some help to ID what I believe is a Crocodile tooth and Otodus from the Paleocene Epoch. Of course this could be inaccurate but I would love some insight into my find, comments and replies are appreciated. Best, DF
  19. Colorado Fossils Show How Mammals Raced to Fill Dinosaurs’ Void An unusually rich trove found in Colorado reveals the world in which our mammalian forebears evolved into larger creatures. https://www.nytimes.com/2019/10/24/science/fossils-mammals-dinosaurs-colorado.html Fossil trove shows life's fast recovery after big extinction by Malcolm Ritter, PhysOrg. October 24, 2019 https://phys.org/news/2019-10-fossil-trove-life-fast-recovery.html Yours, Paul H.
  20. The Dinosaur-Killing Asteroid Acidified the Ocean in a Flash The Chicxulub event was as damaging to life in the oceans as it was to creatures on land, a study shows. New York Times https://www.nytimes.com/2019/10/21/science/chicxulub-asteroid-ocean-acid.html Tiny shell fossils reveal how ocean acidification can cause mass extinction By Julie Zaugg, CNN, October 22, 2019 https://www.cnn.com/2019/10/22/europe/ocean-acidification-asteroid-intl-hnk-scn/index.html New study underpins the idea of a sudden impact killing off dinosaurs and much
  21. Jeffrey P

    Otodus from the Aquia Formation, Maryland

    From the album: Tertiary

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

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

    Crocodile scute Paleocene Aquia Formation Douglas Point Charles Co., MD.
  24. My girlfriend, Valerie and I planned a two week trip to New Mexico and Colorado to visit friends, see scenery, and attend the Peach Festival in Palisades. Of course fossil collecting would be a part of it. I spent a full day with PFOOLEY outside Albuquerque in the Puerco Valley hunting ammonites in the Carlile Member of the Upper Cretaceous Mancos Shale.
  25. oilshale

    Argentina sphyraena Linnaeus, 1758

    From the album: Vertebrates

    Argentina sphyraena Linnaeus, 1758 "lesser argentine" Late Paleocene to Early Eocene Fur Denmark Length 6cm
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