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Yesterday I went to Eastern AR to an Eocene outcrop exposed in a creek. I found about a dozen Venericardia planicosta clam shell fossils and a Mennerotodus shark tooth!
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Hello, I'm Jackson from Arkansas, and I'm an avid fossil hunter. I live on carboniferous exposed strata so that is mostly what I find. I will occasionally visit Eastern AR to Eocene strata. Right now I'm very interested in microfossils and the precambrian. I actually have a trip planned in a few weeks to go to NC to search the slate belt for precambrian fossils. I also am attempting to dissolve carbonate rock of Ordovician age to extract conodont elements. My main hobbies are wildlife conservation, fossils, shell collecting and general outdoor stuff!
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Hi all! New here and I’ve already spent hours down the rabbit hole. I’m a body piercer and jewelry professional but I love rockhounding. I live in Arkansas and we are know for our quartz. I collect rocks literally everywhere I go so I can’t say for certain where I picked this up. I put it in my tumbler with a load and I check the rocks often during the process. This was in the tumbler with first stage grit for about 2 days. When I was doing my routine check, this rock really stuck out to me. I swear I see a bird embryo. Not only that but it feels 3 dimensionally like a bird body. I know the pareidolia is real with my brain but I’m kind of obsessing at this point so I need someone to bust my bubble.
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Hi Everyone, This rock came from Northwest Arkansas on a steep hillside of a creek valley. The rocks in this area very often contain trace fossils. I broke this rock open, and found what looks like an animal claw. I'm going to post a picture of the rock (both halves), a close up of where the object came from, then three pictures of the object itself. You'll notice that the tip of the "claw" is hollow. Is this from an animal, or is it just some kind of coral?
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Hi Everyone, I'm a complete newbie here. I live in Northwest Arkansas. There's no shortage of rocks here, and many of the sedimentary rocks here are covered in trace fossils. This fascinates me (I'm not sure exactly why), but I've collected quite a few of those rocks. I joined this forum to learn and I have a specific fossil that I'd like to have some of you experts have a look at. I'll post that in the appropriate forum. Thanks! David
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Dry Creek bed find. Very dense. I've cleaned it quite too heavily. It doesn't feel like any local stone that I'm aware. Initially believed it might be pet wood but more uncertain since I over did it. You rock!
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I have found smaller ones like it about the size of the tip of my thumb.. but they were solid. VID_20231018_003140598.mp4
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I was taught that this is jasper. Ouachita river, central Arkansas. But could this also be like petrified wood jasper? Is there such a thing and am I far from identifying this correctly? Your knowledge is greatly appreciated.unlike other similar jasper I have found, this has a golden sheen. (?)
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Help me name the outstanding fossil deposits of the midcontinent Devonian
pefty posted a topic in Questions & Answers
Crowdsourcing / help request! I'm putting together a review article for the fossil collector community on the Devonian rocks of the American midcontinent, which I've defined as the gray area on the map below plus southwest Ontario. I'm hoping to include a section in which I highlight the midcontinent fossils of greatest renown for each of a number of taxa (list below). (I purposely leave "renown" as a somewhat squishy quality open to multiple interpretations.) I would appreciate (1) your nominations of any midcontinent Devonian fossils of great renown that I have failed to capture in the list below and (2) your assistance in filling in the blanks marked with "????" Thank you! List is below. Microbes: ???? Marine algae: ???? Sponges: Formosa Reef Limestone, SW Ontario Rockport Quarry Limestone, NE Michigan ???? Corals: Widder Formation, SW Ontario Jeffersonville Limestone, S. Indiana Petoskey Limestone, NW lower Michigan Hyolithids: Arkona Formation, SW Ontario Tentaculitids: Arkona Formation, SW Ontario Conulariids: ???? Bryozoans: ???? Brachiopods: Silica Formation, NW Ohio ???? Pelecypods: Arkona Formation, SW Ontario ???? Gastropods: Rogers City Limestone, NE Michigan ???? Non-ammonoid cephalopods: ???? Ammonoid cephalopods: Arkona Formation, SW Ontario Pelecypods: Dundee Limestone, NW Ohio Arkona Formation, SW Ontario Rostroconchs: Dundee Limestone, NW Ohio Trilobites: Silica Formation, NW Ohio Arkona Formation and Widder Formation, SW Ontario Haragan and Bois d'Arc Formations, SE Oklahoma Non-ostracode crustaceans: Chagrin Shale, NE Ohio Arkona Formation and Widder Formation, SW Ontario Silica Formation, NW Ohio Echinoderms: Arkona Formation, SW Ontario Silica Formation, NW Ohio Thunder Bay Limestone, NE Michigan Graptolites: ???? Fish: Rockport Quarry Limestone, NE Michigan Columbus Limestone, central Ohio Cleveland Shale, NE Ohio Woody plants: Ohio Shale, Ohio Herbaceous plants: Grassy Creek Shale, E Missouri -
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I have been revisiting some of my fossils from my collection I gathered during a two year period where I had the privilege of exclusively exploring hundreds of acres of land in NW Arkansas in and around the town of Eureka Springs. During that time, I was able to collect on friends private land that had never before been surveyed by the outside world. 99.99% of what I came across was of oceanic and inland sea origin when it came to fossils but a couple of fossils perplexed me and this is one of them. I came across this fossil, or pseudo fossil, or weird anomalous permineralized erosion, or “I have no idea,” in a Mississippian Deposit known as the St. Joe and Boone Formations. I found this early in my collecting and had little background or research study under my belt at the time of discovery. I thought it was interesting and set it aside and moved on. I know that the area it comes from isn't known for bone, but it really does appear to be permineralized shoulder bone and upon magnification it has the hallmark of having been biological in origin, but I AM NO EXPERT, and I don't like to give into to fantastical thinking especially when there isn't other supportive evidence to suggest that Arkansas has fossil bones of any kind. What else could it be? Under magnification the flip side of the fossilized bone shape has detailed scale or skin pores and textures that have been preserved through the amazing process of permineralization…but again, there could always be a more plausible explanation that is outside my own understanding, simply because Arkansas doesn’t have bone fossils, historically speaking, aside from the Arkansaurus toe bone that was found some 160 miles south of where this fossil was found. I bring this to the forum because I would love to be able to get feedback and answers. And for future notation, I have many more fossils to present to the group and am looking forward to all of your thoughts, suggestions, expertise, and recommendations! Sincerely, PESEBECHE
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I discovered a love for fossil hunting in NW Arkansas. I had the privilege of spending nearly two years exclusively dedicated to hiking and exploring the Ozark Mountains in and around the Eureka Springs area. I discovered that I truly love being outdoors and exploring undiscovered areas that produce some pretty remarkable mineral specimens and fossils. I since have moved to Albuquerque, New Mexico and work as a Lapidary Artist and Jeweler but still have a passion for fossils. During my two year adventure in Arkansas I acquired quite a large collection of things, including fossils that I have since hauled to New Mexico with me. Recently, I began opening the bins of treasure and have been sorting them and referring them back to the notes I took at the time. I am looking forward to engaging with this community in hopes of filling in the gaps of information I am missing. Thanks for having me as part of your community.
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'Big Ugly Diamond' discovered by Arkansas state park visitor
Oxytropidoceras posted a topic in Rocks & Minerals
'Big Ugly Diamond' discovered by Arkansas state park visitor BBC News, March 16, 2023 Hausel, W.D., 2008. Diamond Deposits Of The North American Craton–An Overview. Topics in Wyoming Geology: Wyoming Geological Association Guidebook, 2008, Pages 103-138 Howard, J.M. and Hanson, W.D., 2008. Geology of the Crater of Diamonds State Park and Vicinity, Pike County, Arkansas. Arkansas Geological Survey. Dunn, D., 2003, June. Diamond evaluation of the Prairie Creek lamproite province, Arkansas, USA. In International Kimberlite Conference: Extended Abstracts (Vol. 8). Dunn, D.P., 2002. Xenolith mineralogy and geology of the Prairie Creek lamproite province, Arkansas. The University of Texas at Austin. Clift, P.D., Heinrich, P., Dunn, D., Jacobus, A. and Blusztajn, J., 2018. The Sabine block, Gulf of Mexico: promontory on the North American margin?. Geology, 46(1), pp.15-18. Howard, J.M., 1996. Finding Diamonds in Arkansas. Arkansas Geological Commission. Yours, Paul H.-
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Found these fossils on a hike today. I think this is a temnyspondyl head? And I'm not sure about the one that looks like a spine, seems pretty large compared to the head. These are on land that was recently acquired by the state less than a year ago to protect the wilderness. These are probably fossils right? I was thinking of reporting them to the Arkansas Natural History Commision who acquired the land last year for the purpose of protecting endangered trees.
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Hello everyone, I moved from North Central Arkansas to just north of Tulsa in December. I explored downtown Tulsa in the Arkansas River but only found a brachiopod. I also found a few HUGE crinoid stems yesterday and what I think are root casts. If anyone lives nearby, Im definitely needing some pointer on locations and some friends would be nice too lol. Thanks
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Rare, Jurassic-Era Giant Insect Discovered at Arkansas Walmart
Oxytropidoceras posted a topic in Fossil News
Rare, Jurassic-Era Giant Insect Discovered at Arkansas Walmart A trip to buy milk turned into a stunning entomological find. Amanada Kooser, CNET, February 28, 2023 Large-sized fossilised lacewings prove remarkable species diversity during Middle Jurassic, Pensoft Blog, October 23, 2018 The paywalled paper is: Skvarla, M.J. and Fisher, J.R., 2022. Rediscovery of Polystoechotes punctata (Fabricius, 1793)(Neuroptera: Ithonidae) in Eastern North America. Proceedings of the Entomological Society of Washington, 124(2), pp.332-345. Yours, Paul H.-
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I’m struggling to identify this. The closest I’ve found is possibly a fossilized crayfish gastrolith. But I could be way off. I’m very new to fossil ID. I do find a lot of marine life fossils in my area. I had thought perhaps brachiopod, but it looks nothing like my other one. I’ve included a photo of the unidentified piece along side my brachiopod so if I have misidentified it please correct me. Thanks in advance. Details: Northeast Arkansas Mississippi Alluvial plain Along the Eastern edge of Crowley’s Ridge I’m 93% certain the material is quartz (chert)
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The Paleontological/Present Day Chondricthyan diversity of the Mississippi River
Joseph Fossil posted a topic in Questions & Answers
The Mississippi River has (in one form or another since the shrinking of the Western Interior Seaway) been flowing for 70 Million Years. https://www.smithsonianmag.com/science-nature/geological-history-mississippi-river-180975509/ This may be more of a current biological rather than paleontological question, but I'm curious about the origin of the current chondricthyan diversity in the Mississippi River? Now a fair amount of you might be confused when I say "Chondricthyan diversity in the Mississippi River", but this is truly a cool case of truth stranger than fiction. The most famous species in this case is the Bull Shark (Carcharhinus leucas), a requiem shark able to tolerate both fresh and saltwater that had been confirmed to be recorded as far up the Mississippi River as Alton Illinois in 1935. Image credit: https://www.thetelegraph.com/insider/article/Researchers-affirm-two-bull-shark-sightings-16308838.php Shell, R., & Gardner, N. (2021, July 1). Movement of the Bull Shark (carcharhinus leucas) in the upper Mississippi River Basin, North America. Marine and Fishery Sciences (MAFIS). Retrieved February 12, 2023, from https://ojs.inidep.edu.ar/index.php/mafis/article/view/181 Shell, Ryan & Gardner, Nicholas & Hrabik, Robert. (2022). Updates on putative bull shark (Carcharhinus leucas) occurrences in the upper Mississippi River Basin of North America. 36. 10.47193/mafis.3612023010101. https://www.researchgate.net/publication/362847015_Updates_on_putative_bull_shark_Carcharhinus_leucas_occurrences_in_the_upper_Mississippi_River_Basin_of_North_America But these are not the only cases of Chondricthyans found in the Mississippi River as shown by the reports and articles here: http://chnep.wateratlas.usf.edu/upload/documents/Essential_habitat_of.pdf (Specifically pg. 10) Rafinesque, C.S. (1820) Ichthyologia ohiensis, or Natural history of the fishes inhabiting the river Ohio and its tributary streams, preceded by a physical description of the Ohio and its branches. W.G. Hunt, Lexington, Kentucky, 90 pp. https://doi.org/10.5962/bhl.title.6892 Jordan, D.S. and Evermann, B.W. (1896). The fishes of North and Middle America. Bulletin of the US National Museum 47:1-1240. https://www.actionnews5.com/story/12943330/memphis-woman-photographs-stingray-in-mississippi-river/ Today, the Mississippi River is one of the most industrialized rivers in the world, with many locks and dams in places that previously allowed Chondricthyans to enter as upstream as Alton Illinois. This is a phenomena that unfortunately is still occurring both in the US and across the world today from places as far away and China and Brazil, Pakistan to Russia, and Cambodia and Australia, disrupting natural river flows that make regions more prone to sever flooding effects and causing a terrifying decline in large bodied freshwater fish that migrant frequently across a whole rivers lengths (and also contributing to the Human induced climate crisis as all the dead animals that pile up at the bottom of these dams produce high amounts of methane). This phenomenon is also something I must add we as a species needs to address urgently and decisively by switching more to more renewable power sources like solar, install fish ladders and workable passages for fish to go around the dams, or legally breach the dams safely whenever possible. But not to get off track here, I'm still curious about the paleontological date of chondricthyans from the Mississippi River. How many fossils of brackish water sharks and rays have been found in the areas of the Mississippi River, was there a historically larger or smaller amount of chondricthyans in the Mississippi during the Late Pleistocene-Early Holocene, and why isn't (at least that I know of) the chondricthyans diversity in the Mississippi River even historically been as high as places as the Amazon river in Brazil? What do you guys think?