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Found 159 results

  1. New footprints from today

    Just found these today. Two different slabs about 4 feet long. Some closeups of one of them.
  2. Are these bone fossils?

    Found these in east central Arizona, close to where I have found fossil footprints. The brown rock surrounding the white material looks like fine sand adhering to it. The white material is smooth.
  3. Mud Ripples, maybe some roots

    The remains of a muddy area.
  4. Dinosaur footprints

    Found these in East Central Arizona. A deep wash has cut through a rock ledge containing lots of the footprints. Still working on trying to get some of the bigger rock slabs hauled out.
  5. Help with Fossil ID

    I’m hoping I could get ID help with a couple of fossils that were found in the Mogollon Rim area near Payson, AZ.
  6. Hi everyone, I will be in Phoenix for a conference next month and was wondering if anyone had any suggestions for quick collecting trips. I have a day to spare prior to the meeting. Thanks for any thoughts Chris
  7. Gallery of Schnebly Hill Formation Fossils

    Here is a collection of photos of fossils from the Permian Schnebly Hill Formation in Arizona. I believe that this is from the Promontory Butte Uranium Mine which is in the Schnebly Hill Formation just above the Naco Formation. Photo is from geological educator Stan Celestian.
  8. Rock or tooth?

    Hi Folks, I've been holding onto this for years as it always looked like a tooth to me. Any help would be appreciated. I found it while hiking at the North Rim of the Grand Canyon in the 90's. Probably a rock just wanted see what others thought.
  9. Fort Apache Limestone finds

    While dissolving an unknown 2 inch long sponge from the Permian Fort Apache Member of the Schnebly Hill Formation from northern Gila County in Arizona I found several silicified brachiopods with spines. Several Bellaclathrus spinosus brachiopods were present ranging from 0.75 to 1.5 inch across and had spines as long as 1 inch. Thankfully some sort of sudden but gentle event buried the sponge and brachiopods preserving them for me to uncover.
  10. Some of my collection

    Hello gang, As promised this is where I will share specimens from my personal collection, my grandfather's collection, and the collection that was donated to the university I work for. The latter is interesting as it is literally boxes of rock and fossils, with no information and my university does not have a geology or paleontology department. I'll be updating it every so often. Enjoy! NOTE: Some of the donated items have old school "labels" on them. If you see initials or such that you recognize, please PM me, as I am doing my best to properly catalog them properly as part of my job!
  11. Here is a compilation of two trips to the Payson, Arizona area last month. Early in May, I led a Saturday and Sunday trip for the Southwest Paleontology Society. Since everyone left by lunchtime on Sunday, I headed over to a local cave, Redman Cave, carved in the Devonian Martin Formation to look for nearby fossils. Although I have been in the cave twice, why go where you cannot collect fossils and you might not have enough oxygen to breath. The cave is connected to the disappearance of one of the FBI’s ten most wanted fugitives, Robert Fisher who murdered his family in Scottsdale and left his dog and car nearby. After searching several caves, no trace of him was found. Photo 1: Redman Cave. Photo 2: J. Redman’s grave next to cave. Photo 3: see Fisher’s most wanted poster. link. Photo 4: after visiting the cave, I looked for outcrops of the early Permian Fort Apache Member of the Schnebly Hill Formation. I found this 4.75 inch long silicified sponge branch that was fully exposed after using four gallons of pool acid. Photo 5: later in the month, I went back to the Payson area to look for more treasures. From the Fort Apache Member, AKA the Fort Apache Limestone. Dissolving the matrix with acid, I found this silicified Euphemitopsis gastropod that is about 1.5 cm at its widest. Winters possibly found a part of this shell that he identified as a Euphemites. Euphemites have spiral lira, ridges, over the older part of the shell and the younger part of the shell is usually smooth near the curved notch in the aperture, the selinizone. Euphemitopsis have bumps in the newer area near the selenizone. See this reference for the best information about the fossils from the Fort Apache Member. We are finding new species, including sponges, to add to the list: Winters, S.S. (1963). Supai Formation (Permian) of Eastern Arizona. Geological Society of America Memoir, 89, 99 p. link. Photo 6: same Euphemitopsis sp. as above. Photo 7: same Euphemitopsis sp. as above. Photo 8: Euphemitopsis sp. and high spired Apachella sp. Photo about 1.5 cm tall. Photo 9: probable sponge, note spicules in lower part of photo. Sponge about 5 mm across. Photo 10: an unidentified sponge that looks like a Maeandrostia kansasensis sp. found in the Pennsylvanian in central and eastern US and Actinocoelia maeandrina found in the Permian Kaibab Limestone a few hundred feet stratigraphically above the Fort Apache Limestone. Actinocoelia maeandrina photos and description: Finks, R. M. 1960. Late Paleozoic Sponge Faunas of the Texas Region: the Siliceous Sponges. American Museum of Natural History, Bulletin 120 (1): 160 pp., 50 pl. link. Photo 11: an unidentified sponge that looks like a Chaunactis sp. found in the Pennsylvanian Naco Formation in the area. View about 3 cm across. See: Dilliard, Kelly & Rigby, J.K.. (2001). The New Demosponges, Chaunactis olsoni and Haplistion nacoense, and Associated Sponges from the Pennsylvanian Naco Formation, Central Arizona. Brigham Young University Geology Studies. 46. 1-11. link. Photo 12: an unidentified sponge that looks like a Chaunactis sp. found in the Pennsylvanian Naco Formation in the area. View about 2 cm across. Photo 13: an unidentified specimen that looks like a sponge root structure. 7 cm across. Photo 14: detail of above possible sponge root structure. 3 cm across. Photo 15: Parallelodon anarklastum. Blue lines are about 7 mm apart. Photo 16: hinge view of Parallelodon anarklastum. Blue lines are about 7 mm apart. Photo 17: probably Oncochilus insolutus. Blue lines are about 7 mm apart. Photo 18: Lophamplexus? sp. Blue lines are about 7 mm apart. Photo 19: Straparollus (Euomphalus) sp. Blue lines are about 7 mm apart. Photo 20: several Bellerophon sp. shells with tear-drop shaped borings from barnacles, Rogerella. A Blue lines are about 7 mm apart. Photo 21: Palaeonucula levatiformis bivalves with pronounced dentition. Blue lines are about 7 mm apart. Photo 22: Straparollus (Euomphalus) kaibabensis. 4.5 cm across. It looks almost like a coiled cephalopod except for its square aperture. Photo 23: Plagioglypta canna scaphopod. 7 cm long. Photo 24: and now a fossil from a different age found on the trip. Silicified stromatoporoid, a sponge, from the Devonian Martin Formation. The conical bumps on each layer are mamalons so named since they look like breasts. Blue lines are about 7 mm apart. Edit My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere. Reply to this topic IPS Theme by IPSFocus Theme C The Fossil ForumPowered by Invision Co
  12. Permian Sponge?

    I found this 4.75 inch long silicified sponge? branch after dissolving a large piece of the Permian (Leonardian) Fort Apache Limestone from the Schnebly Hill Formation east of Payson, Arizona in four gallons of pool acid. Only about five percent of the fossil was exposed. The outer part is denser than the sometimes nearly hollow interior. One cross section shows two tubular structures with denser edges. No organized patterns suggesting a bryozoa or coral branch are present. Do you think that this is a piece of a branching sponge? Top photo: cross section is 1 inch. @Arizona Chris Branch is 4.75 inches long. Bottom photo: cross section is 0.5 inch across.
  13. Arizona sponge

    I found part of a sponge from the Pennsylvanian Naco Formation. The sponge is 5 cm in maximum width. The needle like structures average about 0.2 mm in diameter. Are the needle like structures part of a sponge body or part of the roots? Species? A cross section shows the needles radiate from the center. Photos: 1 top 2 bottom 3 cross section 4 detail
  14. I bought this silver bracelet and I would really appreciate an opinion as to whether the stone could be Arizona petrified wood. I assumed it was maybe picture agate, but a couple people thought maybe it was petrified wood. The bracelet is unsigned and is very heavy gauge silver.Thanks for your help.
  15. I will be visiting Phoenix in May and am looking for someone to go digging with. I have done the site NW of Payson (corals, bryozoan)
  16. Turning Lemons into Limes

    Here are some more Miocene plant fossils from lake sediments north of Phoenix, Arizona. The first large piece of brownish chert, a lemon, had poorly preserved stems. Because the lake sediments had abundant uranium, the rock glowed bright lime green under short wave UV light. Organic matter often attracts uranium deposition.The second piece in the third photo has a great impression of plants that looks like it could have been created in fresh concrete yesterday. Field of view in all photos 6-9cm long.
  17. Arizona Miocene Plants 2nd Trip

    Here are some more lake wetland Miocene plant fossils from NE of Phoenix. I found large outcrops of silicified reeds in growth position. I found several pieces of palm: a first for this area. Photos 1 & 2: palm. Photos 3 & 4: top and bottom of reeds. Photos 5 & 6: more reeds.
  18. Fort Crittendon Vert

    This is a partial vert from the Fort Crittendon Formation, Old Santa Rita Mountains, Arizona. Anything diagnostic enough to tell what species or family this belongs to?
  19. A new paper on early lissamphibians is available online: Michelle R. Stocker; Sterling J. Nesbitt; Ben T. Kligman ; Daniel J. Paluh; Adam D. Marsh; David C. Blackburn ; William G. Parker (2019). The earliest equatorial record of frogs from the Late Triassic of Arizona. Biology Letters. 15 (2): Article ID 20180922. doi:10.1098/rsbl.2018.0922. The frog material described by Stocker et al. is significant because it is the first record of Salientia from the Late Triassic, constituting the second described record of Late Triassic Lissamphibia after the primitive caecilian Chinlestegophis. The discovery of Late Triassic frog remains helps fill a gap in the fossil record of early frogs, because Prosailurus is the next oldest fossil frog known from diagnostic remains. Now the next step is to find a Triassic caudatan (salamander) specimen, because the earliest salamanders have been found in the Middle Jurassic.
  20. Miocene Plants in Lacustrine Formation

    I found these in a Miocene lake bed formation northeast of Phoenix, Arizona. The lake beds are deposited along with volcanic rocks and are probably part of the Chalk Canyon Formation. The lake beds have pieces of agatized plant material. Any ideas of what the plants might be? I am especially interested in the molds of a jointed plant shown in the first three photos. @paleoflor Photo about 6cm high. Detail of first photo. Filled center of plant stem ~0.7mm. Depressed mold of stem ~ 3mm across. Height of photo ~2.5cm. Detail of first photo. Center of stem ~ 1mm. Mold of stem ~3mm across. Length of stem ~5.5cm. Bunch of stems average of 5mm across. Cross section of above photo. Typical stems each about 2 - 4mm across. Possible stromatolite/algae structure.
  21. I will actually be moving out west in June/July, I’m currently researching the areas. I’m calling on the experts to let me know which is the best move for fossils. I’m a geology grad with a desire to pursue paleontology, so career opportunities must be kept in mind as well. The three cities we’ve narrowed down are Fort Collins CO, Flagstaff AZ, and Bend OR. Don’t worry, I will be bringing a plethora of Florida fossils with me, so, whoever gets to meet me will have plenty of gifts and goodies. Just looking for some solid advice. ps, sorry for being so absent on the forums lately; life has been a little cray!
  22. 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!!
  23. 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
  24. 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?
  25. 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