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Found 72 results

  1. For ancient deep-sea plankton, a long decline before extinction University of Buffalo, Press release by Charlotte Hsu Sheets, H.D., Mitchell, C.E., Melchin, M.J., Loxton, J., Štorch, P., Carlucci, K.L. and Hawkins, A.D., 2016. Graptolite community responses to global climate change and the Late Ordovician mass extinction. Proceedings of the National Academy of Sciences, 113(30), pp.8380-8385. Researchgate PDF for above paper Related publications Yours, Paul H.
  2. Second oldest pregnant ichthyosaur ever found. This from a prolific site in Nevada. Also a giant ichthyosaur skull was found and beer is somehow involved too. https://phys.org/news/2020-05-nevada-home-246m-year-old-fossil-pregnant.html
  3. Fossil Wood Petrification and mineralogy

    Mustoe, G.E., 2015. Late Tertiary petrified wood from Nevada, USA: Evidence of multiple silicification pathways. Geosciences, 5(4), pp.286-309. https://www.mdpi.com/2076-3263/5/4/286 https://www.researchgate.net/publication/282851612_Late_Tertiary_Petrified_Wood_from_Nevada_USA_Evidence_of_Multiple_Silicification_Pathways https://sciprofiles.com/profile/112497 https://www.researchgate.net/profile/George_Mustoe Mustoe, G. and Acosta, M., 2016. Origin of petrified wood color. Geosciences, 6(2), no.25. https://www.mdpi.com/2076-3263/6/2/25 https://www.researchgate.net/publication/302497324_Origin_of_Petrified_Wood_Color Mustoe, G.E., 2017. Wood petrifaction: A new view of permineralization and replacement. Geosciences, 7(4), no.119. https://www.mdpi.com/2076-3263/7/4/119/htm https://pdfs.semanticscholar.org/4ff7/8f7c6899c4459c4f33e4d51c040f6374685d.pdf https://www.researchgate.net/publication/321170639_Wood_Petrifaction_A_New_View_of_Permineralization_and_Replacement Mustoe, G.E., 2018. Mineralogy of non-silicified fossil wood. Geosciences, 8(3), no.85. https://www.mdpi.com/2076-3263/8/3/85/htm https://www.researchgate.net/publication/323540027_Mineralogy_of_Non-Silicified_Fossil_Wood Mustoe, George E. "Non-mineralized fossil wood." Geosciences (8) no.223. https://www.mdpi.com/2076-3263/8/6/223 https://www.researchgate.net/publication/325827782_Non-mineralized_Fossil_Wood Luczaj, J.A., Leavitt, S.W., Csank, A.Z., Panyushkina, I.P. and Wright, W.E., 2018. Comment on “Non-Mineralized Fossil Wood” by George E. Mustoe (Geosciences, 2018). Geosciences, 8(12), no.462. https://www.mdpi.com/2076-3263/8/12/462/htm Mustoe, G.E., Viney, M. and Mills, J., 2019. Mineralogy of Eocene fossil wood from the “Blue Forest” locality, southwestern Wyoming, United States. Geosciences, 9(1), no.35. https://www.mdpi.com/2076-3263/9/1/35 https://www.researchgate.net/publication/330292211_Mineralogy_of_Eocene_Fossil_Wood_from_the_Blue_Forest_Locality_Southwestern_Wyoming_United_States Mustoe, G.E., 2015. Geologic History of Eocene Stonerose Fossil Beds, Republic, Washington, USA. Geosciences, 5(3), pp.243-263. https://www.mdpi.com/2076-3263/5/3/243 https://www.researchgate.net/publication/279786883_Geologic_History_of_Eocene_Stonerose_Fossil_Beds_Republic_Washington_USA Yours, Paul H.
  4. Nevada Carboniferous Shark teeth?

    Hello TFF! I found these two pieces in Nevada while looking for some Carboniferous shark teeth and hope I found one. They were located in the Bird Spring Formation north of Vegas which is Pennsylvanian in age. #1 and #2 which could just as well be a brachiopod... Thanks for looking!
  5. Fossil ID

    Hello, on a recent vacation to Las Vegas we had the opportunity to hike Frenchman Mountain, a popular trilobite quarry just east of LV. While there, I happened upon a couple interesting pieces. On the left is a possible imprint(?) And the piece on the right feels like a piece of coral, though I have a hard time believing the calcium carbonate structure would not have completely eroded away. Do I have anything here? Thanks for your time. A little more information, the paw prints are each 1.3 cm deep and the elongated fragment is also 1.3 cm deep.
  6. Hollow gut helps define annelid like creatures from over 500 million years ago. https://www.livescience.com/oldest-guts-fossilized-primordial-creature.html
  7. petrified bone? petrified wood?

    Any help on identifying what these might be would be great. Found near Reno, Nevada in an area stated as being from the Cenozoic period. They appear to be bone to me and I did use the "stick to tongue" test and they do stick to my tongue for a second. Thank you for any help or a push in the right direction for me to find out more specifically what they are. I will add more pics in comment section.
  8. Petrified wood or something else?

    Hello, new here. I found this off the side of the highway 95 near the Nevada/Oregon state line. I’m thinking it’s petrified wood, but I don’t know enough to be certain. Your help and opinions would be greatly appreciated! It’s pretty heavy and hard, smooth on 5 sides and rougher on one. A strange thing, could just be environmental, the “rough” side of the rock has a strange smell, kinda of like old cooking oil. photos of “sides” attached. I’ll add photos of top bottom and a few others in comments.
  9. Quartz on fossil bone?

    This weekend as I was out rockhounding for quartz crystals I found this interesting piece. It looks very much like bone to me. Any insight or information would be appreciated. I will add more pics in the comment section. Thank you!
  10. Barely a month had gone by since my last trip to New Mexico and Colorado, but I already had plans for this trip in the works. Primary focus this time, which was a solo trip, was fossil collecting, visiting well known sites that have been on my radar for quite some time. I flew out to Salt Lake City and drove directly to Kemmerer, WY. My first stop there was Fossil Butte National Monument: Here is a view of the visitors center (free admission) and the surrounding barren, but awesome landscape that surrounds it:
  11. branching bryozoan? Reno, Nevada

    This week I found this in the Reno, Nevada area. I'm trying to get some information on what it is exactly and if it is indeed a fossil. Any help would be greatly appreciated.
  12. Hello, I thought I would share my experience on the latest trip to the Royal Peacock Opal Mine. I wanted to get a away from work and the house and there isnt a quiter place you could find. I was walking along the opal bearing bank when something caught my eye. Most people like to pick a place an dig all day, im more lazy and I like to walk the bank and look for the easy to reach stuff. I saw what looked like a tooth and proceeded to pull out a camelid jaw section (I think) that had two teeth in it! I was super happy with that find because finding a tooth is somewhat rare. I started to dig around in the bank and I found quite a bit more of the jaw. Here are the pictures. It was one of the best fossils that the owners of the mine had seen so I gave it to them to put in the display at the gift shop. I figured that more people could enjoy it that way rather than sitting in my house. I always wanted to find a nice jaw so I guess I can cross that one off the list. If your ever in Northern Nevada you can stop by the Peacock and check it out. Thanks for looking Jesse
  13. Fossil ID: Bison Horn?

    Hi TFF, thanks for having me. I frequently find fossils all over the Las Vegas area, but usually things that came from the sea: shells, small organisms, coral. On one of my last outings, I found this horn. I find many Rugosa, coral horns, in the exposed limestone on the peaks around Mt. Charleston area. This example looks very different to me. It is about 8 inches, 20cm long, and is very heavy, like stone and rock. It appears to me that the outer shell "horn" is partially intact, though long turned to rock. The core is a different texture and color as well. It was found on an exposed limestone ridge a mile or two south of Charleston Peak, ~11,000 ft elevation, partially buried in scree. My first thought was it was some sort of tusk from a sea animal, due to other sea fossils in the area. The bison examples I compared it to on the web could be a match to my untrained eye, but none of them to be as "petrified" or stone-like as this one. I thought I'd share, as it seems like a rare find for the area.
  14. Petrified rock fossils from my backyard, would love some feedback.Petrified rock fossils from my backyard, would love some feedback.Petrified rock fossils from my backyard, would love some feedback.
  15. Ord Perm Triassic Ammonite or ?

    In a recent trip to the Candelaria Mining district of west central Nevada some rocks that suggest fossil forms where found. Is this a fossil? How big where coiled Nautiloids in the Ordivician? Is this more likely Permo-Triassic? I have more pics but the file size limit. Maybe another post later. The rock formations in the area per Mineral, Deposita 29, 318-329 (1994) MINERALIUM DEPOSITA O Springer-Verlag 1994 The Candelaria silver deposit, Nevada - preliminary sulphur, oxygen and hydrogen isotope geochemistry the basement consists of Ordovician cherts of the Palmetto complex; this is overlain unconformably by Permo-Triassic marine clastic sediments (Diablo and Candelaria Formations); these are structurally overlain by a serpentinitehosted tectonic melange (Pickhandle/Golconda allochthon); all these units are cut by three Mesozoic felsic dike systems. The local rock descriptions are obviously simplified. Palmetto Basin Assemblage - Shale, chert, quartzite, greenstone, and limestone Nolan Belt - Shale, chert, phyllite, quartzite, and limestone Diablo Siliciclastic Overlap Assemblage - Sandstone, siltstone, limestone, conglomerate, and carbonaceous limestone Siliciclastic Overlap Assemblage - Shale, sandstone, and limestone Candearia FM Golconda Terrane - Basinal, volcanogenic, terrigenous clastic, and minor carbonate rocks Siliciclastic Overlap Assemblage - Conglomerate, sandstone, siltstone, and limestone Siliciclastic Overlap Assemblage - Shale, sandstone, and limestone Shale with interbedded sandstone and minor limestone characterize the Lower Triassic Candelaria Formation (Ferguson, Muller, and Cathcart, 1954).
  16. Hi! Here is a trip report on visiting a locality near Carlin, Nevada (one of our early videos). I'm not sure if what we decided to call "octopus beaks" (see 1:44 and image attached) are the real thing and not just fragments of brachiopods. Perhaps, somebody more knowledgeable can weigh in with the right answer. Thanks in advance!
  17. Petrified burnt stick

    I found this 6 inch stick in a wash in central Nevada. I was in a area outside of Gabbs where petrified wood is found. The stick is only 3/4 of an inch wide and 1/4 inch thick. One tip looks burnt by fire and leads me to wonder if this could have been a cave man's fire stick. Has anyone seen petrified wood like this?
  18. Short visit (1-2 hours) to famous locality near Las Vegas. I wish we would do better home work because some interesting trace fossils were identified only after we watched the video recordings. Perhaps, our "movie" will help you not to miss them when you will visit this unique place. It was a family Christmas trip, by the way. Also, if you know the species, please help with ID.
  19. Hi Everybody, I am trying to ID some fossils for my friends from the Royal Peacock Opal MIne. They have these fossils for display only at their gift shop but they are not really sure what they are. These are all miocene age fossils, Humboldt County, Nevada. I think the foot and the teeth are from some kind of small horse. I have no idea about the jaw with the teeth. Picture 1: Articulated foot bones from a horse? Picture 2-4: Jaw section from unknown mammal Picture 5-6: Bovine tooth, horse? Bison? camel? Picture 7: Bovine tooth, horse? horse? Bison? camel? Any IDs would be appreciated, Thanks, Jesse
  20. Mammal Bone ID from Rare Location

    Hello everyone, I was hoping someone could help me with the identification with this bone that I found at the Royal Peacock Opal Mine in the Virgin Valley, Humboldt County, Northeastern Nevada, USA. Geologic age is the Miocene. Bones are very rarely found in this area. It is mostly opal, petrified wood, and fossilized wood. I am guessing this came from a land mammal. Possibly a camel. Does anyone have a better idea what it could be? I donated this bone to the mine owner due to its rarity. I thought it should stay where it was found. PS: In the next few days I will post a couple of other rare fossils found at the mine by the owner's son (Jake Anderson).
  21. Las Vegas rock shop

    Does anyone know of any rock shops in the Las Vegas area that would have fossils for sale? More of the Ma and Pa roadside stands rather than the commercial shops , real fossils still covered in dirt.
  22. Hello all, I just started collecting and would like some help. I bought this at a local store here in town and after doing some research I am now worried if this is the real deal. I have tried to find information to see if I can figure it out myself but after hours of looking I can not come to a clear determination.I would like your guidance on my new found journey into fossils. Thank you.
  23. Triassic cephalopoda

    GUE SPATHIAN (LOWER TRIASSIC) AMMONOIDS FROM WESTERN USA (IDAHO, CALIFORNIA, UTAH AND NEVADA) Jean Guex Alexandre Hungerbühler James F. Jenks Luis O’Dogherty Viorel Atudorei David G. Taylor Hugo Bucher Annachiara Bartolini Mémoire de Géologie (Lausanne), n°49, 2010 about 16 MB the contributing authors are dyed-in-the-wool experts on the Triassic @andreas
  24. Paleozic aged fossils ID

    Hello, can you please identify what type of fossil wood or bog perhaps? found near Lyon County. The last picture shows the size of specimens dry. Thank you. Paleozoic Coniferous swampland Nevada
  25. ID possible Shark tooth and Shell

    Thank you!
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