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Please help identify potential fossil probably from Southern Nevada. Pelvic bone?
maximiliano posted a topic in Fossil ID
This specimen is about 60 pounds and 19 x 17 x 6 inches. It has what look like tubular areas on one side, and is smooth on the other sides. Although at first glance it may look like a rock, please see other specimens from Nevada that look similar with white mineralization, etc. It is smooth on all sides except where broken. It flares up and down in opposite directions on each end. Possible Suspects: 7 Dinosaurs That Lived in Nevada (And Where to See Fossils Today) One opinion: Looks like a chunk of Morrison dinosaur pelvis..particularly ilium. The busy side is the inner surface where the sacrum fits on, big hole for femur head. Size-wise, Allosaurus, Stegosaurus" Wish the photos were in color, but one looks like the same dark stone with white mineral streaks: https://www.researchgate.net/figure/Right-lateral-view-of-pubic-foot-of-Allosaurus-AMNH-813-Ventral-view-of-pubic_fig1_268274412
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Found in Nevada. Washoe county. It is heavy, (have yet to weigh it). Length around 250 millimeters/ 25 centimeters.
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From the album: Triassic ammonites
Frechites occidentalis (SMITH) and Atractides sp., middle triassic, Anisium, found in USA, Fossil Hill, Nevada. Size of Frechites is approx. 8 cm (3.5") -
Western Nevada desert. Is this a rock, fossil or what? About 60 lbs, 15” x 10”x 7” thick.
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A new formation of the Cambrian Tonto Group, Grand Canyon formally named for Frenchman Mountain
Oxytropidoceras posted a topic in Fossil News
Frenchman Mountain Dolostone: 500 million-year-old Grand Canyon rock layer finally gets a name. UNLV geologists name ancient rock layer after Las Vegas mountain that contains similar strata; research published in the journal Geosphere. New Study Links Geologic Features of Las Vegas’ Frenchman Mountain with Grand Canyon. Las Vegas Valley rock layer matches that of a famous interval of rocks at the Grand Canyon; findings reported in the Journal Geology. University of Nevada at Las Vegas, May 1 , 2020 The open access paper is: Rowland, S.M., Korolev, S., Hagadorn, J.W. and Ghosh, K., 2023. Frenchman Mountain Dolostone: A new formation of the Cambrian Tonto Group, Grand Canyon and Basin and Range, USA. Geosphere. Supplemental Material: Frenchman Mountain Dolostone: A new formation of the Cambrian Tonto Group, Grand Canyon and Basin and Range, USA, Geological Society of America Another paper is: Karlstrom, K.E., Mohr, M.T., Schmitz, M.D., Sundberg, F.A., Rowland, S.M., Blakey, R., Foster, J.R., Crossey, L.J., Dehler, C.M. and Hagadorn, J.W., 2020. Redefining the Tonto Group of Grand Canyon and recalibrating the Cambrian time scale. Geology, 48(5), pp.425-430. Related papers: Rowland, S.M., 2022, Geology of Frenchman Mountain and Rainbow Gardens, southern Nevada, USA, in Jiang, G.Q., and Dehler, C., eds., Field Excursions from Las Vegas, Nevada: Guides to the 2022 GSA Cordilleran and Rocky Mountain Joint Section Meeting: Geological Society of America Field Guide 63, p. 23– 43. Rowland, S.M., 1987, Paleozoic stratigraphy of Frenchman Mountain, Clark County, Nevada, in Hill, M.L., ed., Cordilleran Section of the Geological Society of America: Geological Society of America Centennial Field Guide 1, p. 53– 56. Hollingsworth, J.S., Sundberg, F.A. and Foster, J.R., 2011. Cambrian stratigraphy and paleontology of Northern Arizona and Southern Nevada. Museum of Northern Arizona Bulletin, 67, pp.1-321. PDFs of more trilobite papers. Videos Wild Speaker Series: The Amazing Geology of Frenchman Mountain and Rainbow Gardens. Friends Of Nevada Wilderness Frenchman Mountain Loop | Bordering Lake Mead National Nevada Trilobites, Frenchman Mountain Yours, Paul H.- 1 reply
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From the album: Pioche Formation
I split this beauty out last Spring, unfortunately the positive ended up crumbling away. The specimen is about an inch and a half long, a fully mature yet relatively puny example of this iconic species. -
500-Mile-Long Power Line Hits a Roadblock, Ice Age Fossils, in Nevada (Tule Springs)
Oxytropidoceras posted a topic in Fossil News
500-Mile-Long Power Line Hits a Roadblock: Ice Age Fossils The proposed the Greenlink West transmission line in Nevada would run through a site filled with mammoth and saber-tooth cat fossils. By Isaac Schultz, GIZMODO, March 4, 2023 Tule Springs Fossil Beds National Monument Yours, Paul -
From the album: Nautiloid’s Trilobite Collection
This is a good sized example of this iconic Pioche Shale bug. It also sports a partial opistothorax, which is pretty sweet. Lower Cambrian Pioche Shale Nevada© Owen Yonkin 2023
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From the album: Nautiloid’s Trilobite Collection
This little bug is only about 0.8 cm wide, but has pretty decent preservation. The rest of the shell is in the negative, and hopefully the rostral process. Lower Ordovician Ninemile Formation Nye Co., NV-
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From the album: Pioche Formation
Perfect! Even has small axial spine holes! -
Orytocephalites + unknown ptychopariid Cranidium
cameronsfossilcollection posted a gallery image in Member Collections
From the album: Pioche Formation
Two uncommon bugs, if only it weren’t just the cranidium! The orytocephalites cranidium is truly miniscule, it's located towards the bottom of the screen in the center - underneath the larger ptychopariid molt piece. -
Ventral Nephrolenellus geniculatus
cameronsfossilcollection posted a gallery image in Member Collections
From the album: Pioche Formation
Nice orange bug on the same plate as the chief + terminatus. -
From the album: Pioche Formation
Beautifully prepped by Jon! -
From the album: Pioche Formation
Look at that axial spine! The relief could be better, but this bug is complete! -
Olenellus chiefensis w/ O. terminatus Cephalon
cameronsfossilcollection posted a gallery image in Member Collections
From the album: Pioche Formation
Big chief with uncommon species! -
From the album: Pioche Formation
Complete opsitothorax! My first find out west. -
From the album: Pioche Formation
~3mm -
From the album: Pioche Formation
Nice lil bug! -
Nephrolenellus geniculatus reverse
cameronsfossilcollection posted a gallery image in Member Collections
From the album: Pioche Formation
Look at that curled opistothorax! -
From the album: Pioche Formation
A crazy inflated Neph! The reverse has a wild opsitothorax, while this one has it only partially preserved. -
From the album: Pioche Formation
Big plate of Olenellus preserved in calcite halos. -
From the album: Pioche Formation
A perfect gilberti, preserved as a cast of the arthropod without its mineralized exoskeleton. -
From the album: Pioche Formation
The reverse of the perfect gilberti cast. This side has the fragile shell preserved on a thin layer of calcite. -
From the album: Pioche Formation
A nice orange fowleri, split this one out of my discard pile! -
Opalized Fossilized Spruce Limb
Royal peacock opal mine posted a topic in Partners in Paleontology - Member Contributions to Science
Miocene Spruce tree limb -Conifer Found in Virgin Valley, NV Humbolt County Museum This Spruce branch was buried in conditions that prevented it from rotting out at all, instead it was fossilized where it sat for who knows how long until the hydrated ash (Si02 Nh20) worked itself down whatever it could get through (or some say the silica gel was forced up from all the geothermal activities) finding cavities along the way to call home for the next X amount of years. this piece was donated for the reason that there was barely anything on display. Been wanting to do it for a long time anyways so thought better late than never.
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