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Found 87 results

  1. DSR Gastropod (?)

    This one has me stumped. I think it is the body whorl of a gastropod (DSR, Middle Devonian, Hamilton Group, Moscow Fm., Windom Shale). It is smashed, but the full circumference of the whorl is present, which means the aperture has to be on the left (which is consistent with the direction of the growth lines) (see arrow). If that is the case, there should be a shallow furrow or ridge in the center of the whorl running parallel with the cords and perpendicular to the growth lines if it were something like Mourlonia or even a Bellarophontacea. I see no evidence of such, not even on the crimped / folded / smashed edges above and below. One would think that with such distinct surface detail that this one would be easy... Any thoughts? The fossil is about 46 mm in length. Scale in mm. @Jeffrey P, @Fossildude19, @Darktooth, @Kane Here is outer side of the shell. Here is the shell flipped over to show the other side of the whorl. I think the broken area on the right is where the body whorl continued to the second whorl (which is missing). Here is both views side by side: Here is where I believe the aperture is located (I have prepped to the edge of the shell, and the shell ends there).
  2. Below are some online PDF files of the now defunct, but still famous, the Leisey Shell Pit in southwest florida. Leisey Shell Pit 1A, University of Florida Vertebrate Fossil Locality HI007 https://www.floridamuseum.ufl.edu/florida-vertebrate-fossils/sites/leisey-shell-pit-1a/ https://www.floridamuseum.ufl.edu/100years/leisey-shell-pit-fossils/ Hulbert, Jr., R.C., Morgan, G.S. and Webb S.D., eds., 1995. Paleontology and Geology of the Leisey Shell Pits, Early Pleistocene of Florida. Bulletin Florida Museum of Natural History, 37 (Part I). https://www.floridamuseum.ufl.edu/bulletin/publications/ https://ufdc.ufl.edu/UF00095791/00001 https://ufdc.ufl.edu/UF00095791/00002/allvolumes Hulbert, Jr., R.C., Morgan, G.S. and Webb S.D., eds., 1995. Paleontology and Geology of the Leisey Shell Pits, Early Pleistocene of Florida. Bulletin Florida Museum of Natural History, 37 (Part II). https://www.floridamuseum.ufl.edu/bulletin/publications/ https://ufdc.ufl.edu/UF00095791/00002 https://ufdc.ufl.edu/UF00095791/00002/allvolumes Hulbert, R.C. and Morgan, G., 1989. Stratigraphy, paleoecology, and vertebrate fauna of the Leisey Shell Pit Local Fauna, early Pleistocene (Irvingtonian) of southwestern Florida. Florida Museum of Natural History, University of Florida. https://www.researchgate.net/publication/313657536_Stratigraphy_paleoecology_and_vertebrate_fauna_of_the_Leisey_Shell_Pit_Local_Fauna_early_Pleistocene_Irvingtonian_of_southwestern_Florida http://floridapaleosociety.com/wp-content/uploads/2012/02/Papers-in-Florida-Paleontology-2-July-1989.pdf Portell, R.W. and Kittle, B., 2010. Mollusca: Bermont Formation (middle Pleistocene). Florida Fossil Invertebrates, 13, pp.1-40. http://floridapaleosociety.com/wp-content/uploads/2012/02/FFI-13.pdf Kittle, B., and Portell, R.W., 2010. Mollusca: Fort Thompson Formation (middle Pleistocene). Florida Fossil Invertebrates, 13, pp.1-40. http://floridapaleosociety.com/wp-content/uploads/2011/01/FFI-12.pdf Morgan, G.S. and Hulbert Jr, R.C., 1995. Overview of the geology and vertebrate biochronology of the Leisey Shell Pit local fauna, Hillsborough County, Florida. Bulletin of the Florida Museum of Natural History, 37(1), pp.1-92. https://www.floridamuseum.ufl.edu/files/7114/7180/9327/Vol-37-Part_1-No-1.pdf https://www.researchgate.net/publication/257620521_Overview_of_the_geology_and_vertebrate_biochronology_of_the_Leisey_Shell_Pit_Local_Fauna_Hillsborough_County_Florida https://www.researchgate.net/profile/Richard_Hulbert Taphonomy of the terrestrial mammals of Leisey Shell Pit 1A, Hillsborough County, Florida https://www.researchgate.net/publication/306429620_Taphonomy_of_the_terrestrial_mammals_of_Leisey_Shell_Pit_1A_Hillsborough_County_Florida https://www.researchgate.net/profile/Richard_Hulbert As lagniappe, there is also an online PDF of a guidebook to Cretaceous-Cenozoic Floras and Landscapes of Southeastern Australia. It is: First International Palaeontological Congress: Pre-Congress Fieldtrip 1: Cretaceous-Cenozoic Floras and Landscapes of Southeastern Australia https://www.researchgate.net/publication/233747871_Cretaceous-Cenozoic_Floras_and_Landscapes_of_Southeastern_Australia https://www.researchgate.net/profile/Stephen_Mcloughlin/2 https://www.researchgate.net/profile/Stephen_Mcloughlin/ Yours, Paul H.
  3. I like geology better, so I like to run around my city On this mountain is a Taoist temple. Taoism is the traditional religion of China. But you see, the slope is very steep. This is the Taoist gate, but I'm not here to see it. On the mountain, have two Chinese characters:"道魂". It means the soul of Taois(Of course there are fossils in this big rock, haha). Running to the side of the mountain without temples, I found some mollusks, of course, many of whom I didn't know. I don't know what they are, and I don't know who to ask.- - Of course, I was about 30 meters away from the top of the mountain, and I found something that I didn't know whether it was fossil trees or sedimentary rocks, which confused me-v-. The sun wants to go home, well, I'll go home, too - V -
  4. diplobelid taphonomy and ethology

    Predatory behaviour and taphonomy of a Jurassic belemnoid coleoid (Diplobelida, Cephalopoda) Dominique Jenny, Dirk Fuchs, Alexander I. Arkhipkin, Rolf B. Hauff, Barbara Fritschi & Christian Klug 1 pdf.pdf Nature,Scientific reports,9-2019
  5. Tyrolian belemnite

    atractitoa3988d.pdf Nino Mariotti ,Johannes Pignatti Atractites Jeletzkyi,a new xiphoteuthidid coleoid from the Lower Lias of Tyrol,Austria Geol.Roman.v.32,1996 Locus typicus:Pfonsjoch holotype: five fragments,glued together telum reasonably complete @Heteromorph @FranzBernhard
  6. The Jurassic of Europe

    PDF BIOSTRATIGRAPHIE DU JURASSIQUE OUEST-EUROPÉEN ET MÉDITERRANÉEN Zonations parallèles et distribution des invertébrés et microfossiles Elie CARIOU & Pierre HANTZPERGUE memoire 17 Elf exploration & Production @Coco @michele 1937 @fifbrindacier typologie:ouvrage synthetique,et:utile,probablement edit: pour probablement,lire: peut etre Useful stratigraphic information in this one edit 2: ca. 31 MB,alors:large
  7. recent cephalopod life history

    s9.pdf Hatch-as-hatch-can: tricks of the trade in coleoid hatchlings (Mollusca: Cephalopoda) Sigurd von Boletzky N. Jb. Geol. Paläont. Abh. 266/1, 67–76/2012
  8. paleozoic malacology

    DBNA Middle and Upper Devonian Cryptodonta (Bivalvia)from the Pelagic Hercynian Facies -Taxonomy, Stratigraphy, and Paleoecology Judith Nagel Inaugural dissertation,2006 ABOUT 5,8 MB the research areas on a Devonian geodynamic reconstruction :
  9. Weaverlagerstusacastlehaynecoleteinkernschweizerbartsclagers07.pdf Rarely seen coleoid phragmocone steinkerns form the Eocene Castle Hayne Limestone of Southeastern North Carolina Patricia Wever,Charles Ciampaglio,Richard Chandler Palaeontographica,Abt.A/279,Lfg 4-6/Stuttgart,may 2007
  10. the young ones

    Pimpaounionidlarvontogenicedulcaquital2012.pdf Amer. Malac. Bull. 30(1): 73–84 (2012) 73 Comparative morphometry and morphology of glochidial shells of Amazonian Hyriidae (Mollusca: Bivalvia: Unionida) Daniel Mansur Pimpão, Maria Cristina Dreher Mansur, Paulo Eduardo Aydos Bergonci, and Colin Robert Beasley
  11. squid pro, quondam

    Anatomy and evolution of the first Coleoidea in the Carboniferous. Klug C, Landman NH, Fuchs D, Mapes RH, Pohle A, Guériau P, Reguer S, Hoffmann R Communications Biology,2019 Nature,31 july,2019 edit:about 9 MB I should be shot for that title here @Heteromorph @BobWill
  12. 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
  13. Unknown Oyster, Madagascar

    Hey everyone! I recently acquired this oyster from Tulear province, Madagascar. The seller has listed it as Rastellum carinatum, but doing any research online, I’ve only found other sellers selling similar fossils. I did come across a Wikipedia article for Agerostrea sp. It appears to be the same shell, and it lists it as occurring in rocks that are Maastrichtian age from Madagascar. Are these the same species just under different names or are they separate? If so, what genus does my specimen belong too? Any response would be greatly appreciated from you guys, we’ll see how challenging this might be to figure out. Thanks again -Nick
  14. correlation-reptiles cephalopods

    45437447.pdf Netherlands Journal of Geosciences — Geologie en Mijnbouw | 84 – 3 | 283 - 301 | 2005 Stratigraphic ranges of mosasaurs in Belgium and the Netherlands (Late Cretaceous) and cephalopod-based correlations with North America J.W.M. Jagt
  15. Oyster?

    I am having so much trouble finding out what these are. I confident that they are some type of prehistoric oyster but I have yet to find out. Is there anyway some of you guys can help me? IMG_3374.HEIC
  16. Collection Available

    The Pinal Geology Museum (pinalgeologymuseum.org) in Coolidge Arizona has a fossil collection that it would like to donate to a college, university, or museum. There are over 1000 specimens, they are all cataloged and each one has an index card. Most of the samples are small just a few inches in size with a few larger ones. There are mainly brachiopods and corals, but I have not looked carefully at the collection which is in storage. This collection was mader by a collector over a 70 year time period and it was donated to our museum by his family when he passed away. The whole collection would not need to be kept by the recipient, but it is hoped most could be with the collectors name attached to it in recognition of his efforts to put it together.
  17. Rostroconchia or Brachiopod?

    Howdy! I have a neat puzzle for the experts today! I know that rostrochonchia are not super easy to find... so I submit the follow picture. Most of the "shelled" creatures I unearth are brachiopods; cincinnetina meeki, Lepidocyclus, Rafinesquina...etc... HOWEVER! this specimen is unique to my collection. Found in northern Cincinnati - Upper Ordovician - The pronounced ridges are different than anything else found. Posted to an Ohio Fossil group, someone with a keen eye made the possibility of Rostroconchia. From my understanding these are not found often. Looking for help in identification. I do not have the tools at hand to remove anymore of the matrix without damage to the remaining fossils in the hash plate... (I have a dremel tools and dental pics...I'm lame) which are neat too. Rostrochonchia or Plaesiomys subquadratus (I compared to these specimens I had) As always, looking for education and conversation.
  18. Ammonite Fossil ID request

    Hello, I am a new user and I recently picked up this ammonite fossil at a local rock & fossil shop. I got it for $80, and it has not been worked on much, only one side has been mostly cleared of rock. I have tried to use various sources on the internet and galleries, but I am new to this and have not been able to identify this fossil myself. It is decently large, and about 8-9 inches across at its longest. There are lots of deep ridges in the shell, but each ridge as far as I can tell is uniform, with no protrusions. Unfortunately, I do not know the origin of this fossil, or the type of rock it is in, though it seems to be very soft and break easily. I can provide more information and/or photos as requested. Thanks!
  19. taphonomy & methodology

    Disentangling the history of complex multi-phased shell beds based on the analysis of 3D point cloud data Mathias Harzhauser, Ana Djuricic,Oleg Mandic,Martin Zuschin,Peter Dorninger,Clemens Nothegger,Balázs Székelyb,Eetu Puttonen,Gábor Molnárb,Norbert Pfeifer Palaeogeography, Palaeoclimatology, Palaeoecology Volume 437, 1 November 2015, Pages 165-180 1-s2.0-S0031018215004149-main.pdf taxa concerned: Paroxystele amedei (Brongniart, 1823) r Superfamily: Neritoidea Rafinesque, 1815 Agapilia pachii c Nerita plutonis (Basterot, 1825) f Superfamily: Cerithoidea Férussac, 1821–1822 Ptychopotamides papaveraceus (Basterot, 1825) f Granulolabium bicinctum (Brocchi, 1814) r Turritella gradata (Hörnes, 1856) r Oligodia bicarinata (Eichwald, 1830) r Petaloconchus intortus (Lamarck, 1822) c Superfamily: Calyptraeoidea Lamarck, 1822 Calyptraea depressa (Lamarck, 1822) f Calyptraea irregularis (Cossmann & Peyrot, 1919) f Superfamily: Velutinoidea Gray, 1840 Erato sp. r Superfamily: Naticoidea Guilding, 1834 Polinices pseudoredemptus (Friedberg, 1923) f Neverita josephinia (Risso, 1826) r Superfamily: Muricoidea Rafinesque, 1815 Ocenebra crassilabiata (Hilber, 1879) c Ocinebrina striata (Eichwald, 1853) c Janssenia echinulata (Pusch, 1837) r Nassarius edlaueri (Beer-Bistricky, 1958) f Cyllenina suessi (Hoernes and Auinger, 1882) c Tudicla rusticula (Basterot, 1825) c Superfamily: Cancellariidae Forbes and Hanley, 1851 Solatia exwestiana (Sacco, 1894) r Superfamily: Conoidea Rafinesque, 1815 Perrona semimarginata (Lamarck, 1822) r Perrona louisae (Hoernes and Auinger, 1891) r Perrona vindobonensis (Hörnes, 1854) r Class: Cephalopoda Cuvier, 1795 Aturia aturi (Basterot, 1825) r Class: Bivalvia Linnaeus, 1758 Superfamily: Gastrochaenoidea Gray, 1840 Rocellaria dubia (Pennant, 1777) r ok,am quitting the italics for once Superfamily: Arcoidea Lamarck, 1809 Anadara diluvii (de Lamarck, 1805) r Superfamily: Limopsoidea Dall, 1895 Glycymeris deshayesi (Mayer, 1868) r Superfamily: Mytiloidea Rafinesqe, 1815 Perna aquitanica (Mayer, 1858) f Septifer oblitus (Michelotti, 1847) r Superfamily: Pteriidae Gray, 1847 Isognomon soldanii (Deshayes, 1836) r Superfamily: Pectinoidea Rafinesqe, 1815 Pecten styriacus (Hilber, 1879) r Aequipecten macrotis (Sowerby in Smith, 1847) r Superfamily: Anomioidea Rafinesque, 1815 Anomia ephippium Linnaeus, 1758 r Superfamily: Ostreoidea Rafinesque, 1815 Crassostrea gryphoides (Schlotheim, 1813) f Ostrea digitalina (Dubois de Montpereux, 1831) f Superfamily: Lucinoidea Fleming, 1828 Loripes dujardini (Deshayes, 1850) r Megaxinus incrassatus (Dubois de Montpereux, 1831) r Diplodonta rotundata (Montagu, 1803) r Superfamily: Chamoidea Lamarck, 1822 Pseudochama gryphina (Lamarck, 1819) r Superfamily: Cardioidea Lamarck, 1809 Cardium hians (Brocchi, 1814) Acanthocardia paucicostata (Sowerby, 1839) f Superfamily: Mactroidea Lamarck, 1809 Ervilia pusilla (Philippi, 1836) r Superfamily: Solenoidea Lamarck, 1809 Solen marginatus (Pulteney, 1799) c Superfamily: Tellinoidea de Blainville, 1814 Tellina planata (Linnaeus, 1758) r Superfamily: Veneroidea Rafinesque, 1815 Cordiopsis islandicoides (Lamarck, 1818) r Venerupis basteroti (Mayer, 1857) f related editorial note: GEOSPHERE is a free access publication;the link is quite long,and i noticed i got the message : session timed out so: a slightly more indirect way of pointing the way: https://pubs.geoscienceworld.org/gsa/geosphere/article/12/5/1457/189679/high-resolution-3d-surface-modeling-of-a-fossil High-resolution 3D surface modeling of a fossil oyster reef Ana Djuricic Peter Dorninger Clemens Nothegger Mathias Harzhauser Balázs Székely Sascha Rasztovits Oleg Mandic Gábor Molnár Norbert Pfeifer Geosphere (2016) 12 (5): 1457-1477. WARNING: 45 MB
  20. no uncertain terms

    Spixianaplacopbe033_0171-0194.pdf Illustrated summary of chiton terminology (Mollusca, Polyplacophora) Enrico Schwabe SPIXIANA 33 2 171–194 München, November 2010 ISSN 0341–8391
  21. heteromorph or gastropod

    What's your opinion? Lower Campanian, marine, southern Poland.
  22. benthic ecology

    ZU IVO GALLMETZER, ALEXANDRA HASELMAIR, ADAM TOMASOVYCH, ANNA-KATHARINA MAUTNER, SARA-MARIA SCHNEDL,DANIELE CASSIN, ROBERTO ZONTA, AND MARTIN ZUSCHIN TRACING ORIGIN AND COLLAPSE OF HOLOCENE BENTHIC BASELINE COMMUNITIES IN THE NORTHERN ADRIATIC SEA PALAIOS*,2019,v.34 *yes,you read that correctly >>>>>>>>monumentally interesting<<<<<<<<<<<<
  23. fossil quahog

    This amazing bivalve fossil was a gift. The giver had no info to offer. I am curious about what its origins might be - where/when; about how old it might have been when it died (it is 6 inches across and has several hundred growth ridges); and I would like to understand how fossilization can result in what appears to be a set of perfectly intact valves, complete with so much detail - in other words, the shells are much heavier than living shells would be, what has replaced the calcium bicarbonate to make the shells so much heavier?
  24. ID needed

    Got it from a friend. This actually should come in one piece and not separated like this. Probably someone split it up so that he/she could see the inside. Probably found in Papua, Indonesia. Please your ID. Thankyou.
  25. I feel clammy

    Misaki_cretacjapasiaet_misakcommensmollusal-2014-Palaeontology.pdf COMMENSAL ANOMIID BIVALVES ON LATE CRETACEOUS HETEROMORPH AMMONITES FROM SOUTH-WEST JAPAN AKIHIRO MISAKI, HARUYOSHi MAEDA, TARO KUMAGAE and MASAHIRO ICHIDA Palaeontology, Vol. 57, Part 1, 2014, pp. 77–95 "Lagerstatt" is not among the keywords,but some ammonites are reasonably well preserved A long while back I said here that syn-vivo encrustation might be more common in the fossil record than usually assumed . @Heteromorph
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