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Showing results for tags 'paleocene'.
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I took my kids yesterday for a quick hike out to Douglas Point to get some exercise and check out the Potomac. I wasn't expecting much because the tide was still pretty high and the water a bit muddy. But conditions were better than expected, so we were able to look around a bit. About 10 minutes in, I spotted a really nice little otodus in a submerged gravel line just below one of the bluffs. (Very tricky to see these guys, sometimes, against the dark sand.) It's in great condition and looks like it just came out of the bluff. We poked around as the tide went out for the next hour and came up with some more smaller teeth, some plates, and a few pieces of turtle shell, but nothing as nice as that first tooth. Anyway, it was a fun time and kept the kids busy for awhile! I was happy to find a decent tooth under tricky conditions. Enjoy the pics.
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I was out kayaking on a creek on the Virginia side of the Potomac today to do some birdwatching, but in an area I thought might have some Aquia exposure. I did come across one small bluff face, with maybe maybe 40 feet of narrow beach, that I stopped to check out. After about 2 minutes, I looked down and found this guy. My best Otodus so far and still razor sharp! I did find a few more much smaller teeth and a decent ray plate fragment, but nothing special the rest of the day. But this tooth--plus dozens of herons, ospreys, eagles, and purple martins, among other birds--made for an awesome trip. I hope you enjoy the pix .
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Hey guys- I was kayaking yesterday near Blue Banks and stopped for a rest and, of course, to see if there was anything interesting lying around. I picked up this piece of what I thought could be fossilized wood, but I'm not sure. It is definitely mineralized, has some very faint slightly radiating lines on the "top" and has a clear pore structure in cross section. Any ideas?
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Hi, I was wondering what these two shark teeth are. Any ideas? They were found in Maryland at purse state park.
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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.
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Striatolamia Macrota with Pathologic Deformities found at Purse State Park MD
Gneave posted a topic in Fossil Hunting Trips
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 almost all my S. macrota specimens seem to be missing their telltale crown striations. I found some nice looking ones I found, all approximately an inch in length and with a hint of blue coloring. Towards the end of the trip I also stumbled upon a likely pathological lateral tooth, probably another Striatolamia. It definitely caught my eye, and I really liked the weird curvature of the crown. This one was about half an inch in length, and although it might not be easy to tell from the photo, it had a much stubbier tip that was not the result of chipping or erosion. Anyways, I just thought I'd share an interesting find from last month since I'm losing my mind in quarantine. It sucks not being able to go on hunts when the weather is so nice, but I hope everyone is staying safe.
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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 commonly observe the item of interest; paler orange indicates times in earth history to less commonly observe the item of interest. White indicates very little to no practical probability of observing the item of interest. Please keep in mind that the listed indicators are things like “conspicuous horn corals,” purposefully declining to address rare encounters with groups of low preservation potential, low recognizability, etc. Got additions/amendments, especially for the groups mentioned above? Toss them in the comments below! Thank you..... https://docs.google.com/spreadsheets/d/1tVm_u6v573V4NACrdebb_1OsBEAz60dS1m4pCTckgyA- 5 replies
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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.
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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
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- douglas point
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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 material from the same spot,(within 6-7 feet of each other) and then find four more scattered along the beach. This trip was also very productive in terms of otodus, 3 in all from this same trip, although one was very badly damaged. Along with these larger beauties, innumerable teeth found their way into our hands and pockets. Is there any way that the turtle can be identified? Is it possible to refer to this turtle material as from the same turtle? ( We weren't finding any the first trip and then found a ton the second trip) @MarcoSr@sharkdoctor@WhodamanHD Thanks, FA The rikers mount contains finds from both trips. The largest fragment of turtle. Identifiable?
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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!
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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 not one, but four Jaekelotodus Robustus, a ray dermal scute, and the tip of a small fish jaw. Between the two of us we managed to collect between four-five hundred teeth in a three hour hunting period. Thanks for this one, @sharkdoctor
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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.
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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 aren’t weathered like they should have been and the river wasn’t the right kind that would rework sediments. I’m not sure I believe their arguments but what do you guys think? Rigby-et-al_1987_Paleocene-dinos.pdf
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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
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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 I must say, I found something special every day I was there. I hunted all day Thursday before checking into my hotel and getting a Bob Evens dinner. Then I re-raked the gravel a little while Friday morning before getting some breakfast and spending the rest of the day exploring Purse State Park for the first time. I woke up a little later Saturday so I could have some free breakfast at the Rod 'n Reel Resort before hunting. I was lucky because the weather shifted and the tide was back in. It made for some enjoyable kitty-litter-scooper scooping all day. The tide never dropped more than a couple inches maybe so I just stood near the water line and scooped up anything I could see. Here's some pics.
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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.
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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
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Colorado Fossils Show How Mammals Raced to Fill Dinosaurs’ Void
Oxytropidoceras posted a topic in Fossil News
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.- 2 replies
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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 of the other life, GFZ GeoForschungsZentrum Potsdam, Helmholtz Centre October 22, 2019 https://www.sciencedaily.com/releases/2019/10/191022080721.htm The open access paper is: Michael J. Henehan, Andy Ridgwell, Ellen Thomas, Shuang Zhang, Laia Alegret, Daniela N. Schmidt, James W. B. Rae, James D. Witts, Neil H. Landman, Sarah E. Greene, Brian T. Huber, James R. Super, Noah J. Planavsky, Pincelli M. Hull, 2019, Rapid ocean acidification and protracted Earth system recovery followed the end-Cretaceous Chicxulub impact. Proceedings of the National Academy of Sciences Oct 2019, 201905989; DOI: 10.1073/pnas.1905989116 https://www.pnas.org/content/early/2019/10/15/1905989116 Yours, Paul H.
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From the album: Tertiary
Otodus obliquus Mackerel Shark Tooth Paleocene Aquia Formation Douglas Point Charles Co., MD.-
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Shark Vertebra from the Aquia Formation, Maryland
Jeffrey P posted a gallery image in Member Collections
From the album: Tertiary
Shark Vertebra Paleocene Aquia Formation Douglas Point Charles Co., MD.-
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Croc Scute from thr Aquia Formation, Maryland
Jeffrey P posted a gallery image in Member Collections
From the album: Tertiary
Crocodile scute Paleocene Aquia Formation Douglas Point Charles Co., MD.-
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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.
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From the album: Vertebrates
Argentina sphyraena Linnaeus, 1758 "lesser argentine" Late Paleocene to Early Eocene Fur Denmark Length 6cm
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