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Showing results for tags 'pliocene'.
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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. -
From the album: Gastropods of the Tamiami Formation
Order Littorinimorpha Family Triviidae Pusula pediculus (Linnaeus, 1758) Statigraphy: Pinecrest Sand Member of the Tamiami Formation Location: Quality Aggregates, Sarasota County, Florida USA. Status: Extant Notes: Large for family. A common Caribbean species. -
From the album: Gastropods of the Tamiami Formation
Order Littorinimorpha Family Triviidae Cleotrivia petrela (Olsson & Harbinson, 1953) Statigraphy: Pinecrest Sand Member of the Tamiami Formation Location: SMR Phase 10 Pit, Sarasota County, Florida USA. Status: Extinct Notes: No furrow or just a trace of furrow with ribs that meet across furrow. -
From the album: Gastropods of the Tamiami Formation
Order Littorinimorpha Family Triviidae Niveria suffusa (Gray, 1827) Statigraphy: Pinecrest Sand Member of the Tamiami Formation Location: SMR Phase 10 Pit, Sarasota County, Florida USA. Status: Extant Notes: Smooth furrow along entire length of shell with finely beaded ribs. -
From the album: Gastropods of the Tamiami Formation
Order Littorinimorpha Family Eratoidae Hespererato maugeriae (Gray, 1832) Statigraphy: Pinecrest Sand Member of the Tamiami Formation Location: APAC Sarasota County, Florida USA. Status: Extant Notes: Often misidentified as a Marginella with which it resembles and was once classified as. -
From the album: Gastropods of the Tamiami Formation
Order Littorinimorpha Family Eulimidae Nixo willcoxiana Dall, 1889 Statigraphy: Pinecrest Sand Member of the Tamiami Formation Location: SMR Phase 10 Pit, Sarasota County, Florida USA. Status: Extinct Notes: Large for genus with a high gloss. My experience is that specimens from the Caloosahatchee are larger than those from the Tamiami. -
From the album: Gastropods of the Tamiami Formation
Order Littorinimorpha Family Eulimidae Niso aeglees Bush, 1885 Statigraphy: Pinecrest Sand Member of the Tamiami Formation Location: SMR Phase 10 Pit, Sarasota County, Florida USA. Status: Extant Notes: Niso differs from Melanella by having an umbilicus. N. aeglees differs from N. willcoxiana by its smaller size and a sharp edge to the body whorl. -
From the album: Gastropods of the Tamiami Formation
Order Littorinimorpha Family Eulimidae Melanella magnoliana Gardner & Aldrich, 1919 Statigraphy: Pinecrest Sand Member of the Tamiami Formation Location: SMR Phase 10 Pit, Sarasota County, Florida USA. Status: Extinct Notes: Highly glossed, small, very thin and narrow. -
From the album: Gastropods of the Tamiami Formation
Order Littorinimorpha Family Eulimidae Melanella calkinsi Olsson & Harbinson, 1953 Statigraphy: Pinecrest Sand Member of the Tamiami Formation Location: SMR Phase 10 Pit, Sarasota County, Florida USA. Status: Extinct Notes: Differs from M. magnoliana by having a more narrow form and at least two addition whorls. -
From the album: Gastropods of the Tamiami Formation
Order Littorinimorpha Family Eulimidae Strombiformis dalli Gardner & Aldrich, 1919 Statigraphy: Pinecrest Sand Member of the Tamiami Formation Location: SMR Phase 10 Pit, Sarasota County, Florida USA. Status: Extinct Notes: Highly glossed, small, very thin and narrow. -
Digging up bones: Unearthing the past at Gray Fossil Site, Tennessee
Oxytropidoceras posted a topic in Fossil News
Digging up bones: Unearthing the past at Gray Fossil Site Diane Hughes, Explore Tennessee, The Tennessean, Sept. 10, 2018 https://www.tennessean.com/story/exploretennessee/2018/09/10/unearthing-past-gray-fossil-site/1215351002/ Gray Fossil Site http://gfs.visithandson.org https://en.wikipedia.org/wiki/Gray_Fossil_Site Some publications found using Google Scholar are: Gong, F., Karsai, I. and Liu, Y.S.C., 2010. Vitis seeds (Vitaceae) from the late Neogene Gray fossil site, northeastern Tennessee, USA. Review of Palaeobotany and Palynology, 162(1), pp.71-83. https://dc.etsu.edu/cgi/viewcontent.cgi?referer=https://scholar.google.com/scholar?hl=en&as_sdt=0%2C19&q=gray+fossil+site&btnG=&httpsredir=1&article=3171&context=etd http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.1000.9259&rep=rep1&type=pdf Zobaa, M.K., Zavada, M.S., Whitelaw, M.J., Shunk, A.J. and Oboh-Ikuenobe, F.E., 2011. Palynology and palynofacies analyses of the Gray Fossil Site, eastern Tennessee: their role in understanding the basin-fill history. Palaeogeography, Palaeoclimatology, Palaeoecology, 308(3-4), pp.433-444. https://pdfs.semanticscholar.org/3e1a/1ed4b8c0eb716d82dfa966b0f95f03d7d681.pdf https://www.researchgate.net/profile/Mohamed_Zobaa https://www.researchgate.net/profile/Michael_Zavada Worobiec E., Liu Y.-S., Zavada M. S. 2013. Paleoenvironment of the late Neogene lacustrine sediments at the Gray Fossil Site, Tennessee, USA. Annales Societatis Geologorum Poloniae, 83(1): 51–63. https://www.researchgate.net/profile/Michael_Zavada https://www.researchgate.net/publication/258226231_Worobiec_E_Liu_Y-S_Zavada_M_S_2013_Paleoenvironment_of_the_late_Neogene_lacustrine_sediments_at_the_Gray_Fossil_Site_Tennessee_USA_Annales_Societatis_Geologorum_Poloniae_831_51-63 Also, there is this unrelated shor, "fluff" article. How Long Does Something Have to Be In the Ground Before It's Considered a Fossil? http://mentalfloss.com/article/556730/how-long-does-something-have-to-be-in-ground-to-be-a-fossil Yours, Paul H.-
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From the album: Gastropods of the Tamiami Formation
Order Littorinimorpha Family Xenophoridae Xenophora floridana (Mansfield, 1930) Statigraphy: Pinecrest Sand Member of the Tamiami Formation Location: APAC Pit, Sarasota County, Florida USA. Status: Extinct Notes: Carrier shell which attaches shells, debris and rocks for camouflage. -
From the album: Gastropods of the Tamiami Formation
Order Littorinimorpha Family Vermetidae Petaloconchus floridanus Olsson & Harbinson, 1953 Statigraphy: Pinecrest Sand Member of the Tamiami Formation Location: SMR Phase 8 Pit, Sarasota County, Florida USA. Status: Extinct Notes: Small curly tubes found attached in colonies. Specimen colony attached to post-mortem Arca wagneriana. -
From the album: Gastropods of the Tamiami Formation
Order Littorinimorpha Family Vermetidae Petaloconchus sculpturatus Lea, 1843 Statigraphy: Pinecrest Sand Member of the Tamiami Formation Location:APAC Pit, Sarasota County, Florida USA. Status: Extinct Notes: Large tightly coiled unattached tubes typically found singly but sometimes in colonies.
