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Showing results for tags 'pliocene'.
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Hi Gang, looking for some insight on several Tamiami formation Pliocene aged Sarasota County, Florida inverts. Found this gastropod at work a couple weeks ago as the rains exposed some new material in the road fill. Trying to confirm if its a Phyllonotus globosus. It also had a neat little Chama inside...saving it for my Chama ID project that I may get to some day....
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Fossil Hunting Holiday at Beaumaris, Australia - Dec 2018
Paleoworld-101 posted a topic in Fossil Hunting Trips
As the year comes to a close i decided to do a bit more collecting at one of my favourite Australian sites: Beaumaris near Melbourne in Victoria, Australia. Once again i travelled down and stayed at a motel near the beach for three days (27/12/18 through to 29/12/18). This trip is a sequel to the previous two trips i have made here which are also posted on the forum: Jan 2016 trip: http://www.thefossilforum.com/index.php?/topic/61248-fossil-hunting-holiday-in-victoria-australia-dec-2015-jan-2016/ Feb 2017 trip: http://www.thefossilforum.com/index.php?/topic/71996-fossil-hunting-holiday-at-beaumaris-australia-feb-2017/ Beaumaris is a significant site with both marine and terrestrial fossils from the latest Miocene aged Beaumaris Sandstone Formation (5 - 6 million years old), which crops out in distinctly red-coloured coastal cliffs and also in offshore rocky reefs. An impressive diversity of both vertebrate and invertebrate fauna occurs here, and the Melbourne Museum has put together a neat PDF of the fossil diversity for those unfamiliar with the site (https://www.bcs.asn.au/fossils_of_beaumaris_2015-02.pdf). My plan was to collect every single low tide across these three days, and sleep during every high tide. Yes, this meant going out collecting in the middle of the night too! My main interest was to collect shark teeth, however they can be tough to find here and are certainly not as common as at many other sites internationally that the people on this forum would be more familiar with. This often seems to be the case with Australian vertebrate fossils. It does however make it quite rewarding when you do eventually find them! The first day of searching (27/12/18) proved to be rather disappointing. I finally got to try snorkelling for fossils, which is a popular method here for finding things exposed along the seabed, but alas after about 3 hours in the water i had not found any bones or teeth. I was unable to locate the nodule bed where most of the vertebrate fossils originate from, which i think played a part in my lack of success. The seabed was also quite sanded over and it was hard to see much. I was definitely out of my element here, but it was also a lot of fun to get close to some of the local marine life, including stingrays! I decided to return to land collecting after not doing very well in the water and when i did so my luck changed greatly. The next two days and nights of land collecting (28/12/18 and 29/12/18) proved to be much more successful and i even got to meet two TFF members on the beach (coincidentally)! @Echinoid and @Tympanic bulla were also out looking, and we had a nice chat before they headed off to continue snorkelling. I then spent most of my remaining time on the beach flipping rocks and examining the pebbles up close, ultimately finishing the trip with a total of five shark teeth which i was very happy with! Carcharodon hastalis tooth as found. 24mm long. Large Carcharodon hastalis upper anterior tooth, as found at 2 am (with a head-torch) on 29/12/18. Measures 56 mm long. I had long been waiting for a tooth of this size! Carcharodon hastalis posterior tooth as found. 15 mm long. Another Carcharodon hastalis posterior as found. 13 mm long. And a small fragment of cetacean bone. Worn pieces like this are the most common vertebrate fossils at Beaumaris. Pictures continued in the next post
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Two species of peccaries reported from Gray Fossil Site, Tennessee
Oxytropidoceras posted a topic in Fossil News
First report of prehistoric peccaries from Gray Fossil Site WJHL, News Channel 11 Staff December 20, 2018 https://www.wjhl.com/local/first-report-of-prehistoric-peccaries-from-gray-fossil-site/1669081173 East Tennessee scientists ID extinct peccary species East Tennessee State University scientists have discovered the remains of two different extinct species of ancient peccaries at the Gray Fossil Site. WRCBtv http://www.wrcbtv.com/story/39690109/east-tennessee-scientists-id-extinct-peccary-species The paper is: Doughty, E.M., Wallace, S.C., Schubert, B.W. and Lyon, L.M., 2018. First occurrence of the enigmatic peccaries Mylohyus elmorei and Prosthennops serus from the Appalachians: latest Hemphillian to Early Blancan of Gray Fossil Site, Tennessee. PeerJ, 6, p.e5926. https://peerj.com/articles/5926/ Another paper is; Samuels, J.X., Bredehoeft, K.E. and Wallace, S.C., 2018. A new species of Gulo from the Early Pliocene Gray Fossil Site (Eastern United States); rethinking the evolution of wolverines. PeerJ, 6, p.e4648. https://peerj.com/articles/4648/ An older article is: Digging up bones: Unearthing the past at Gray Fossil Site Diane Hughes, Explore Tennessee Sept. 10, 2018 https://www.tennessean.com/story/exploretennessee/2018/09/10/unearthing-past-gray-fossil-site/1215351002/ Merry Christmas Everyone, Paul H. -
I bought a "little" package of Lee Creek matrix from @PaleoRon recently. It came in yesterday & I started digging. Lots of teeth & vertebrae so far & I'm barely into it. I found this one thing I'm not sure what it is, but it looks cool. 11 mm in length x 6 mm wide & stuck to a rock. Pics are at 55x magnification showing top, both ends (sort of) & both sides (sort of). Wasn't easy to get some of the pics, but here they are. Not sure if its a coral or shell or just some ordinary oddity.
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A very uncommon find for this site, possibly due to it's small size. Found in matrix from the inside of a large clam shell. PLIOCENE MOLLUSCS FROM THE YORKTOWN AND CHOWAN RIVER FORMATIONS IN VIRGINIA Lyle D. Campbell 1993
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Did a Supernova Kill Off Megalodon 2.5 Million Years Ago?
Oxytropidoceras posted a topic in Fossil News
Megalodon may have been killed off by Supernova radiation, Hannah Osborne, Newsweek, December 13, 2018 https://www.newsweek.com/megalodon-extinct-shark-supernova-cosmic-ray-cancer-mutations-1256980 Massive supernova explosion may have wiped out giant prehistoric sharks, scientists say. Megalodon may have been among creatures driven to extinction after cosmic particles drove up cancer rates, new study claims The Independent, Josh Gabbatiss, December 2018 https://www.independent.co.uk/news/science/supernova-stars-explosion-giant-sharks-prehistoric-megalodon-extinction-science-a8679636.html The paper is: Adrian L. Melott, Franciole Marinho, and Laura Paulucci 2018, Hypothesis: Muon Radiation Dose and Marine Megafaunal Extinction at the End-Pliocene Supernova. Astrobiology, Published Online, November 27, 2018 https://doi.org/10.1089/ast.2018.1902 and at Muon Radiation Dose and Marine Megafaunal Extinction at the end-Pliocene Supernova Adrian L. Melott (Kansas), Franciole Marinho, Laura Paulucci (Submitted on 26 Dec 2017 (v1), last revised 17 Oct 2018 (this version, v2)) https://arxiv.org/pdf/1712.09367.pdf https://arxiv.org/abs/1712.09367 Yours, Paul H.- 3 replies
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Marine Fossil Three Serrated Edges Late Pleistocene to Pliocene Southern California
MightyPretzel posted a topic in Fossil ID
Happy holidays everyone. I would greatly appreciate help identifying the following specimen. It was collected in the Santa Susana Mountains of Simi Valley, Ventura County, California. It came from the Saugus or Pico Formation. Saugus is late Pleistocene to late Pliocene while Pico is middle Pleistocene to Pliocene. My uncertainty regarding the exact formation arises from the fact that (1) it was float material already weathered out of the formation it came from and (2) based on limited research and knowledge, I believe there has been a lack of consenus regarding differentiation of the two formations (see recent work by Richard Squires et al. in Valencia and R. Squires in Newhall). I assume it is marine since all of Pico is marine and Saugus is non-marine to marine. At first I thought it was a shark tooth when I picked it up but I threw that thought out the window when I realized it had three serrated edges. Measures 22 millimeters long and 6.5 millimeters wide. It is 4 millimeters tall on one end and 9.5 millimeters tall on he end that has the needle structure. There are three to four 'bumps' on both long sides on the end with the needle. The bumps look evenly spaced. I can and will do my best to provide additional info if needed.
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New papers recording new occurrences of fossil Monodontidae are available online: Hiroto Ichishima; Hitoshi Furusawa; Makino Tachibana; Masaichi Kimura (2018). First monodontid cetacean (Odontoceti, Delphinoidea) from the early Pliocene of the north‐western Pacific Ocean. Papers in Palaeontology. Online edition. doi:10.1002/spp2.1244. (describes Haborodelphis japonicus) Pesci et al. (2018). First record of Monodontidae (Cetacea, Odontoceti) in the Mediterranean Basin from the Pliocene sands of Arcille (Grosseto, Tuscany, Italy). Fossilia, Volume 2018: 37-39. Denebola and Bohaskaia were long the only described fossil monodontid species from the pre-Pleistocene, but Haborodelphis and the new monodontid skull from Tuscany shed new light on the distribution of monodontids.
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Shark teeth that change color.. Here is one... a Mako. A Photo taken within 10 minutes of removing from a heavy blanket of mud, gravel, clay mixture. This tooth had not seen daylight in a couple of million years. Then a photo of the same tooth 2 hours later when I arrived home. Yes I applied water, then oil and neither the blade or especially the root darkens again.. If some type of organism that dies/fade in sun light, how about this hemi that came from the exact same location. Why is the root still black? Figure this will be a good discussion for shark experts.
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From the album: Vertebrates
Myctophum sp. Late Pliocene Vrica Italy -
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As the title says, I went to a local fossil club meeting last night. I always purchase tickets for the fossil lottery and selected these when my tickets were called early. Looking for an ID.... @MikeR What is the "frosting"..... Also kudos for a good presentation on Cretaceous Inland sea.. I learned from Joshua about identifying the shifting shoreline boundaries of the WIS by testing/core samples of current rocks, using the types of rock and imbedded fossils to identify the shoreline. There are always questions on TFF about finding fossils... Turns out Joshua has a really accurate map.
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Hello all, I am going on a trip with the family down to Carmine's Island for recreation but figured while I'm there why not do some fossil hunting. I mean, it just makes the day better anytime. We know of a location called Felgates Creek, which is Pliocene. Good? Bad? Only about 29 minutes away from me. Can we just find stuff on the coastal beaches? Thanks
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Giant Impact Crater Might Be Hidden Under Greenland Icesheet
Oxytropidoceras posted a topic in Fossil News
This is interesting. Scientists Spot What May Be a Giant Impact Crater Hidden Under Greenland Ice By Meghan Bartels, Space.com, November 14, 2018 https://www.space.com/42431-giant-impact-crater-hidden-under-greenland-ice.html The open access paper is: Kurt H. Kjær, Nicolaj K. Larsen, Tobias Binder, and many others A large impact crater beneath Hiawatha Glacier in northwest Greenland. Science Advances 14 Nov 2018:Vol. 4, no. 11, eaar8173 DOI: 10.1126/sciadv.aar8173 http://advances.sciencemag.org/content/4/11/eaar8173 Yours, Paul H.- 3 replies
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Hoping someone easily recognizes these and its an easy answer...my initial searches have been fruitless... So I was supposed to be looking for more Florida coprolites in the garage piles of fossils and got sidetracked looking as this large Turbinella columella and just noticed these tan circular markings on it and wanted to know if they were traces of serpulids? Probably Pliocene Tamiami formation, Sarasota County, Florida. Whats fascinating to me is their spiral?/concentric, ornamented/segmented? shape which appears to actually be etched into the gastropod shell itself. Almost look like cross sections of forams. I've scraped a number of the small white serpulid tubes off thinking I'd see a similar pattern but there is no marking beneath them--its perfectly smooth. If it is a tube, I wasnt aware that they could actually score the surface of the gastropod shell--seems pretty neat if thats what going on but maybe its something entirely different. The gastropod, aside from being badly damaged has sponge borings, barnacle and coral encrustration, and serpulid tubes. Most of the circular traces are around 1mm in diameter and a few push the 2 or 3mm size. Thanks for the help! Regards, Chris
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From the Pliocene Yorktown Formation Zone 2 Rushmere Member. An uncommon find at this particular site. Geology and Paleontology of the Lee Creek Mine, North Carolina, II MIOCENE AND PLIOCENE PECTINIDAE (BIVALVIA) FROM THE LEE CREEK MINE AND ADJACENT AREAS, by Thomas G. Gibson
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Complete double valves are rare at this site. Pieces of this shell are not uncommon. Found at the base of Zone 2, Rushmere Member of the Yorktown Formation on the Tar River. The two photos of the hinge detail were included to show that detail. They are not from the same specimen. PLIOCENE MOLLUSCS FROM THE YORKTOWN AND CHOWAN RIVER FORMATIONS IN VIRGINIA Lyle D. Campbell 1993
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I was browsing the Forum and came across an excellent (Jan 25, 2018) post by @GeschWhat listing some characteristics of coprolites. Unhappily, Lori did not provide illustrations. I want to quote her list later. I have here a few coprolites from different rivers, including the Peace River. I'll post some images, and let you judge how well these specimens fit Lori's list of characteristics. This one (two images) is from the Peace River: This one (two images) is from the Suwannee River, a bear-dog site: This one (two images) is from the Peace River: This one (two images) is from the Peace River: Report post I don't subscribe to the 'lick test,' and Lori has heard all of the scatological jokes by now, so let's get down to serious 'business.' Feel free to provide further illustration or commentary on the identification of coprolites.
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From Wikipedia: " Small, floating aquatics with creeping stems, branched, bearing hairs on the leaf surface papillae but no true roots. Leaves are in trimerous whorls, with two leaves green, sessile or short-petioled, flat, entire and floating, and one leaf finely dissected, petiolate, rootlike and pendent. Submerged leaves bearing sori that are surrounded by basifixed membranous indusia (sporocarps). "
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Would anyone have a PDF of the following publication? Anatomy of a Regional Mass Extinction: Plio-Pleistocene Decimation of the Western Atlantic Bivalve Fauna Steven M. Stanley PALAIOS Vol. 1, No. 1 (Feb., 1986), pp. 17-36 Thanks in advance! Mike
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Good afternoon, I found this item during a during a pre Hurricane Florence visit to Onslow Beach. It seems to have some earmarks of a bone but the shape is very unusual. I am also leaning towards it being an interesting piece of nothing.Thank you in advance for any and all assistance.
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Hey all I was able to go out to Greenville, NC for a quick hunt this fine morning. Heres the haul Everything 2 exogyra and a oyster? That exogyra is absolutley MASSIVE some non-shark teeth Huge and reaaaallly old sperm whale tooth root. First whale tooth fish tilly bone Fish tooth. Could someone ID? Mosasaur tooth. My first mosasaur tooth too Belemnites Shark teeth Some good ones Great whites My first meg that still has serrations Nice big crow shark Two nice Hastilis tiger shark teeth are very rare in that layer Whale bone Ear bone Was a very good day, this was a result of only around 3 hours
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@Boesse While cleaning shells from the Pliocene deposits at Capitola I came across this dolphin tooth ~17 mm. Any ideas on a more specific identification? Thanks Mike
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From the album: Gastropods of the Tamiami Formation
Order Littorinimorpha Family Triviidae Pusula crovoae Olsson, 1967 Statigraphy: Pinecrest Sand Member of the Tamiami Formation Location: SMR Phase 10 Pit, Sarasota County, Florida USA. Status: Extinct Notes: Ribs that end with nodes along the furrow.
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