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Found 138 results

  1. Hi friends, I am hoping to have an opportunity to go Arizona and get away from this cold winter weather here in Canada. If I can pull this off, I will be staying near Chandlier Arizona. Does anyone know of any sites I might be able to go wander in? Where are the fossil site in Arizona? I need to get myself there!!
  2. Here is The Association of Applied Paleontological Sciences online guide for fossil dealers and other paleo related info for the 2019 Tucson (Arizona) fossil, gem and mineral shows. The guide lists dealers by speciality and venue. The guide has some blank pages (advertisements missing?). https://aaps.net/pdf/2019-AAPS-Guide-final-lo-res.pdf
  3. Here is a fantastic example of a calcareous rock (possible Mancos Shale) from NE Arizona (Black Mesa) that I obtained from the teaching collection of a retired geology professor. The whole rock is about 6 inches long. Can anyone guess what it is and why I like it? Can you make a good guess @FranzBernhard?
  4. Grand Canyon Paleontology

    Hey y'all, hope you're all having a good time! This recently published report by Hodnett & Elliott (2018) describes two fairly diverse chondrichthyan faunas from the late Mississippian/early Pennsylvanian of western Grand Canyon (Arizona). The assemblages, from 2 separate formations, are described on the basis of quite many tooth specimens, and other material (i.e. denticles). Differences between those faunas and other similar-aged Euro-American faunas indicate paleogeographical implications relating to the formation of Pangaea. Hodnett, J. P. M., & Elliott, D. K. (2018). Carboniferous chondrichthyan assemblages from the Surprise Canyon and Watahomigi formations (latest Mississippian–Early Pennsylvanian) of the western Grand Canyon, Northern Arizona. Journal of Paleontology, 92(S77), 1-33. Abstract: Two chondrichthyan assemblages of Late Mississippian/Early Pennsylvanian age are now recognized from the western Grand Canyon of northern Arizona. The latest Serpukhovian Surprise Canyon Formation has yielded thirty one taxa from teeth and dermal elements, which include members of the Phoebodontiformes, Symmoriiformes, Bransonelliformes, Ctenacanthiformes, Protacrodontoidea, Hybodontiformes, Neoselachii (Anachronistidae), Paraselachii (Gregoriidae, Deeberiidae, Orodontiformes, and Eugeneodontiformes), Petalodontiformes, and Holocephali. The euselachian grade taxa are remarkably diverse with four new taxa recognized here; the Protacrodontidae: Microklomax carrieae new genus new species and Novaculodus billingsleyi new genus new species, and the Anchronistidae: Cooleyella platera new species and Amaradontus santucii new genus new species. The Surprise Canyon assemblage also has the youngest occurrence of the elasmobranch Clairina, previously only known from the Upper Devonian. The Surprise Canyon Formation represents a nearshore fluvial infilling of karstic channels, followed by a shallow marine bioherm reef, and finally deeper open water deposition. The early Bashkirian Watahomigi Formation represents open marine deposition and contains only two taxa: a new xenacanthiform, Hokomata parva new genus new species, and the holocephalan Deltodus. The relationship between the Surprise Canyon and Watahomigi chondrichthyan assemblages and other significant coeval chondrichthyan assemblages suggests that there may have been eastern and western distinctions among the Euamerican assemblages during the Serpukhovian due to geographic separation by the formation of Pangea. Here's the paper Hodnett & Elliott 2018 Grand Canyon chondr. fauna.pdf Happy New Year to you all!! -Christian
  5. Ape man

    I hope these are better pics.i have the chest cavity with ribs and spine also
  6. Ape man

    Please help you can see teeth and one eye. Something crushed its head on right side. Also the spine on the back side. I have chest cavity and lung. Please help if you would thank you.
  7. Identification

    Hello, I joined this group today so that I might have a recent find identified. My name is Larry Atkins and I'm a meteorite hunter from Michigan and I spend a lot of time in Arizona looking for space rocks. I find a lot of different things out there and yesterday I found an interesting cluster of fossil bone and teeth. Last spring, in the same wash, I found a partial skeleton of a huge tortoise. The Arizona Museum of Natural History was supposed to dig it up but they never got around to it and the monsoons have apparently washed it away! So disappointing. Here's an in-situ of yesterday's find. This is in Pinal county AZ. Thanks! Larry
  8. Who's Permian feet made these?

    If anyone is familiar with Permian tracks, can anyone ID these? All I can tell is that they appear to be synapsid tracks, but not Dimetrodon. I'm assuming that means Edaphosaurus is out too, but that's all I can figure. the ONLY details still known are that they're Permian tracks from somewhere in Arizona. There's no more information available. There's 4 plates... 1-pic 1 2-pics 2,3,4 3-pics 5 4-pics 6,7
  9. FOSSIL or ARTIFACT?

    I found this in a fossil bed along with some clam fossils I was finding near Globe, Arizona. It was sitting in a depression on the ground near an exposed limestone fossil rift. The white band goes all the way around symmetrically and the rock type does not match anything in the area. is it a fossilized turtle shell, or nut maybe? or an indian artifact, or just an out of place rock?
  10. Vertebra identification request

    Found what may be a vertebra, sticking partially out of the ground on private property near Phoenix, Arizona in Maricopa County. The soil is hard-packed coarse sand/silt/gravel with areas of clay. A landscaper added a top dressing of decomposed granite and river rocks - a typical desert landscape design around here. The specimen likely was transported to the site in the river rock. Luck me! Other fossils found in the landscape material lead me to believe it came from a healthy and diverse marine environment with turtles, fish, shark, crocodilia, lizards, skate, snakes and mammals. The entire area was once an inland sea. The specimen is approximately 6.5 cm length x 5 cm width x 2 cm height. (Lateral measurement varies from 1.5 cm to 2.5 cm.) The vertebral body is 5 cm length x 4 cm height. Let me know what you think. The "tooth" on the distal side measures 2 cm.
  11. Arizona Pennsylvanian Coral

    The corals from the Pennsylvanian Naco Formation in Arizona have not been officially described partly because many are silicified and have lost internal details. Any idea what these corals are with central columns that are vertically striated? Their average length is 2 to 3 cm. I think that they look like Lophophyllidium. Thanks, John
  12. EDIT: see complete post below Ynot's brief post. I found some amazing fossils last weekend north and east of Payson, Arizona in the Pennsylvanian aged Naco Formation. Clear skys and warm temperatures were tolerable because of the tree cover. The star of the show was a 40 cm slab with and upside down silicified Syringopora coral colony that showed the basal branches. Mother Nature started the etching process, I continued it with dilute pool acid. For scale, each coralite is about 2mm in diameter. The next star was a 23cm unidentified sponge.
  13. Any idea what these silicified possible crinoids are? Are they even crinoids? They are from the Pennsylvanian Naco Formation from near Payson. The ones in the photos (both sides are shown) are from 0.8 to 1.5 cm wide. @crinus These two references might be of help. Anyone have access to the photos from these? Webster, G., & Olson, T. (1998). Nacocrinus elliotti, a New Pachylocrinid from the Naco Formation (Pennsylvanian, Desmoinesian) of Central Arizona. Journal of Paleontology, 72(3), 510-512. Webster, Gary; Elliott, David. (2004). New information on crinoids (Echinodermata) from the Pennsylvanian Naco Formation of central Arizona. The Mountain Geologist. 41. 77-86.
  14. Paleozoic Adventures in Arizona

    Here are photos of two trips taken to look for Paleozoic fossils in northern Gila County in northern Arizona. Daily thunderstorms and plentiful shade made the 90 deg. + temperatures bearable. I ran into TFF member ArizonaChris while in the area. In the Martin Formation I found interesting stromatoporoids, now determined to be sponges, that were important reef forming organisms during the Late Devonian. Pine needles for scale. Here are some silicified Martin Formation brachiopods. Nearby are many caves and sinks in the fossiliferous limestones of the Martin and Redwall Formations: up to 100 miles of passages according to a caver. The first one is full of junk metal including two cars. Any idea what the cars are? Here is Tin Can Sink. To be continued.
  15. Cool Fossil Prep Photo

    Here is a cool photo of a silicified Michelina coral that I was trying to extricate from Redwall Limestone with acid. It reminded me of my proposed TFF slogan/motto: "we place fossils on pedestals".
  16. Pennsylvanian Shark Tooth

    Anyone know what this Pennsylvanian (Desmoinian) shark tooth from Arizona is? The tooth is 40mm wide and 30mm from top of tooth to bottom of preserved root. The shape of the tooth suggests that it was a shell crusher. Thanks, John
  17. Mysteries of the Great Unconformity

    Mysteries of the Great Unconformity, a journey in deep geologic time by Michael Timmons, New Mexico Bureau of Geology and Mineral Resources. 'Earth Matters' https://geoinfo.nmt.edu/publications/periodicals/earthmatters/17/n1/em_v17_n1.pdf Joel, L. (2018), Erasing a billion years of geologic time across the globe, Eos, 99, https://doi.org/10.1029/2018EO092065. Published on 05 February 2018. https://eos.org/articles/erasing-a-billion-years-of-geologic-time-across-the-globe Yours, Paul H.
  18. Arizona Paleontology Literature by Taxonomy

    Here is Arizona Paleontology Literature by Taxonomy. Main page of Arizona Paleontology Guide link This is is a work in progress. I am working on formatting issues. Vertebrates general Single most complete list of references at end of publication. link
  19. Clam from Cretaceous Mural Limestone

    What is the cool clam from the Cretaceous Mural Limestone from southern Arizona? Trigonia? http://skywalker.cochise.edu/wellerr/fossil/pelecypod/bumpy2.htm See if anyone can confirm that it is one of these: Quadratotrigonia mearnsi? https://www.researchgate.net/figure/Trigoniid-bivalves-Mural-Formation-in-Sonora-and-Arizona-Figure-A-B-Buchotrigonia_fig4_249897573 Thanks, John ,
  20. Schnebly Hill Fm. plants

    What are the plants in the photos from the Pennsylvania/Permian boundry from the Schnebly Hill Formation near Payson, Arizona that I am linking to my Arizona Paleontology Guide? Photos are from geology teacher Stan Celestian and were not found by me. (I'm going to look at the location for plants). Thanks, John 1 Annularia? 2 Fern type? 3 Fern type?
  21. Arizona Paleontology Guide

    Arizona Paleontology Guide Paleontology Guides Master Index link My Favorite Paleontology Resources Guide link This is a guide to the most relevant literature, websites, photos and The Fossil Forum content relating to paleontology in Arizona. This main page is a continually updated and monitored index with links to subpages of paleontology resources. Click on links on this page to see content in the subpages. Click on link in the upper right of every subpage to go back to this main page, the index. This is a modest start for an important resource. I have more to add. Please contact me if you if you have any questions, suggestions or content that I should add. Feel free to send a link to this Guide to anyone that needs information about Arizona Paleontology. Thanks to Fruitbat, Joe, for his inspiration and many of the reference citations. Enjoy, John Arizona Paleontology Literature by Formation & Member etc. link Arizona Paleontology Literature by Geological Age link Arizona Paleontology Literature by Taxonomy link Arizona Paleontology Maps link Arizona Paleontology Photos link Arizona Paleontology Websites: General link Arizona Paleontology Websites: Museums, School Depts., Parks & Societies link
  22. Arizona Geological Maps

    Arizona geological maps organized by county and lithostratigraphic units. Back to main page Click on underlined links. Current and historical topo maps link State map link Counties Apache Cochise Coconino Gila Graham Greenlee Mohave Maricopa Navajo Pinal Pima Santa Cruz Yavapai Yuma (includes La Paz) Geological Units Martin Formation Windy Hill Fossils here.
  23. Arizona Paleontology Websites

    Paleontology websites for Arizona. Click on underlined links for content. Back to main page Museums Museum of Northern Arizona link Arizona Museum of Natural History link School departments Arizona State University link Search for paleontology in search box to find paleontology faculty. Northern Arizona University link University of Arizona link Parks Petrified Forest National Park link The best fossil forest park in the world. Kohl's Ranch Naco Paleo Site link Near Payson with lots of fossils. Societies Mineralogical Society of Arizona link Great society dedicated to geology, mineralogy and paleontology of Arizona. Lots of field trips including ones for fossils. Southwest Paleontological Society link Great publications, lectures and field trips to collect mostly vertebrate fossils including dinosaurs.
  24. Found in the Canelo Hills of Arizona. About 5" diameter, 1.5" thick. Very hard rock. The inner ring shows on the other side as well. Also has some very small and short grooves in rows on one edge. They look very unusual. Is it possibly a fossilized vertebra? What do you all think? It would only let me post one photo. I'll try to add more after posting.
  25. Arizona Fossil Photos

    Here are links to my favorite Arizona fossil photos. Back to main page Martin Formation Pseudoatrypa devonia Thamnopora Many in rock at Chasm Creek. Mural Limestone Clam Turitella Naco Formation Derbyia crassa Common. Mucrospirifer Myalina nacoensis Chaunactis olsoni My best sponge. Fusilinid Hash Plate Kohl's Ranch Wilkingia terminale Redwall Formation Archimedes First ever reported from the Redwall. Schnebly Hill Formation Fern Naco? Equisetum Naco? Unknown sponge Silicified sponge from Fort Apache Member.
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