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  1. RetiredLawyer

    Something new and different!

    Just found this today. It will hook up with the trackway I’m putting together once i get the rock hauled out. My first Eubrontes!
  2. I found several varieties of Devonian corals, including Pachyphyllum, Hexagonaria, Thamnopora and Alveolites near Superior, Arizona. Check out this Pachyphyllum woodmani that reminds me of the painting The Starry Night by Vincent Van Gogh. The painting also inspired a great song by Don McLean: https://m.youtube.com/watch?v=dipFMJckZOM Pachyphyllum lack common walls with their neighboring corallites. The septa grow in a curving manner towards each other meeting in a slightly irregular fashion.
  3. These fossils are fairly common in the Mississippian redwall limestones of central Arizona. I believe they are rugose corals. Is this correct?
  4. This is a shot of a conglomeration of fossils in mudstone from the Verde Formation of central Arizona. This formation is a graben of jumbled types -- sandstone, limestone, mudstone, basalt, etc. These were in layers along a dry streambed. Any assistance with what they are would be appreciated. I'm assuming they are Pennsylvanian period, given the lack of crinoids. Locally, the redwall limestone is Mississippian, and contains abundant crinoids. The Martin limestones are Devonian, and have few fossils. I assume the pictured fossils are more recent than either of these. I'm especially curious about the items a few inches below my index finger that look like cross-sections of bone -- hollow with webbing inside. Thanks for any help you can offer!
  5. Billymachi

    Looks like Coral but I Dunno

    Found along the border south of Phoenix. It looks like some kind of colony.
  6. DPS Ammonite

    Microconchid

    1.75 mm across silicified shell of a microconchid, a possible Lophophorate, that is sometimes referred to as a “worm tube”. It is encrusted on a Caninia coral. Found in the Pennsylvanian Naco Formation limestone from northern Arizona. Two microconchids are visible on the bottom of the lower right hand coral. https://en.m.wikipedia.org/wiki/Microconchida
  7. RetiredLawyer

    Piecing it back together

    Have some nice trackways from the new spot.
  8. andy_mnemonic

    Pliohippus horse tooth

    This tooth for sale caught my eye and was hoping someone could help ID it. It was purportedly found in Miocene deposits of Arizona and I _think_ it's a late wear stage cheek tooth of Pliohippus sp. I do not have measurements at this time. Thanks for the help!
  9. NatalieinFlagstaff

    Arizona Pennsylvanian Naco fossil

    Hello! Yesterday I did some collecting near Pine, AZ from a site known for shallow water, shelf marine fossils. This is the Pennsylvanian Naco formation. I found something with an odd shape encased in limestone, so I soaked it in diluted muriatic acid over night. I am stumped as to what this might be? Any help is appreciated! Thank you.
  10. Snakebitetrucker

    Possible tracks in rock arizona?

    Good day all. I'm new here so let me introduce myself. I'm Robert, an amateur gold prospector, fisherman and lots more. I have found nothing too interesting during my gold panning adventures well not for an untrained gold fevered eye anyways but have found tons of modern aged bones that looks old at least a few hundred years old. Anyways now since thats out of the ways I was driving through Arizona when I reached the top of the hill at the sitegreaves national forest sign off of 260. I pulled over to let my semi truck cool down and chose to hike a bit. I sat down on a rock and found a small track. Its not as big as my hand nor is it extremely noticeable, maybe the size of one of those bbq/Chick-fil-A sauce dipping things tad bigger i guess. Anyways I took a picture what do you think? Just an coincidence?
  11. RetiredLawyer

    Love my new neighbor!

    My new neighbor (mile away but still the closest) rented an end loader and volunteered to move two of my biggest rocks! Both safe in my collection. And even better, went up the side of the wash about eight feet and found tracks. Could be the edge of the undisturbed fossil layer.
  12. Took some pictures of the chirotherium tracks. Have quite a few with a front and rear together.
  13. DPS Ammonite

    Pachyphyllum nevadense

    This is a small form of Pachyllum nevadense that has corallites with small corallas (the circular structures that have a high rim that stick above the surface). The coralla rim diameters range from 1.25 mm to 2.5 mm and average 1.5 mm to 1.75 mm. The corallites average 2.5 mm to 8 mm apart center to center with an average of 4 mm to 5 mm apart. They have an average of 20 septa. The measurements partly overlap with those described for the species by Stumm in 1948: coralla rim diameter of 2 mm to 4 mm; average of 3 mm; distance from corallites centers of 5 mm to 10 mm; 18 to 24 septa. Since there is a lot of variability of the species in the same colony, at the same site, from site to site in Arizona and the US, I consider that this a variety of Pachyphyllum nevadense. References: Stumm, Erwin C. “Upper Devonian Compound Tetracorals from the Martin Limestone.” Journal of Paleontology, vol. 22, no. 1, 1948, pp. 40–47. JSTOR, www.jstor.org/stable/1299252. Luke, Keith J., 1978. CORALS OF THE DEVONIAN GUILMETTE FORMATION FROM THE LEPPY RANGE NEAR WENDOVER, UTAH, NEVADA. BRIGHAM YOUNG UNIV. GEOL. STUD.; USA; DA. 1978; VOL. 25; NO 3; PP. 83-98. Link
  14. DPS Ammonite

    Orophocrinus saltensis

    This silicified blastoid at 31 mm in width is close to maximum size for the species. Found with at least three species of crinoids in Mississippian Escabrosa Limestone which is roughly equivalent to the Redwall Limestone of central and northern Arizona. Macurda D. B., Jr. 1965. The functional morphology and stratigraphic distribution of the Mississippian blastoid genus Orophocrinus. Journal of Paleontology 39(6):1045-1096. McKee, Edwin D., Gutschick, R. C., 1969. History of the Redwall Limestone of northern Arizona. Geological Society of America Memoirs 114, 1-700. Mindat: Link Fossil Forum: Link
  15. DPS Ammonite

    Iowaphyllum nisbeti Oliver 1978

    This Late Devonian silicified coral was first found in the Superstition Mountains by Gladys Turner Nisbet who was a botanist from Cave Creek, Arizona. I found mine nearby. Wikipedia: Link Measurements given for whole colony. Coralites vary from 10 mm to 40 mm across. Average is 15 mm to 20 mm. Oliver, W.A., Jr., 1978, Iowaphyllum (rugose coral) from the Upper Devonian of Arizona: U.S. Geological Survey Journal of Research, v. 6, no. 6, p. 797-805. Link Mindat Link
  16. DPS Ammonite

    Antiquatonia portlockiana

    A great example of a less common productid brachiopod preserved in calcite from the Kohl’s Ranch Paleo Site also known as the Indian Gardens Paleo Site east of Payson, Arizona. Some workers refer to this as Antiquatonia portlockianus. References: Brew, D., & Beus, S. (1976). A Middle Pennsylvanian Fauna from the Naco Formation near Kohl Ranch, Central Arizona. Journal of Paleontology, 50(5), 888-906. Retrieved October 7, 2020, from http://www.jstor.org/stable/1303586 Norwood, J. C. and Pratten H. 1855. Notice of Producti found in the Western States and Territories, with descriptions of twelve new species. Journal of the Philadelphia Academy of Natural Sciences 111(1):5-22.
  17. RetiredLawyer

    This one is too big to move

    8’ long, 32” wide. Excellent sets of tracks. Need a backhoe to move this one. Late in the day so pics are a bit shaded, sorry.
  18. DPS Ammonite

    Peniculauris bassi

    This most common brachiopod from the Pennsylvanian Kaibab Limestone in Arizona came from the collection of John Weber. Link Primary reference: McKee, Edwin D., 1938. The environment and history of the Toroweap and Kaibab Formations of northern Arizona and southern Utah. Carnegie Institution of Washington Publication 492:1-268 Link
  19. RetiredLawyer

    Love this set of prints

    Found this yesterday. It was a bit out of the water flow so it hasn’t been eroded much. Nice distinct prints.
  20. RetiredLawyer

    More nice prints. One unknown

    Nicely defined toes with claws. I guess you could call them sandy claws. Catch me at your local comedy club! Second picture is taken under a rock I’ve tunneled underneath but I have no idea what the print is from. It’s about 2”.
  21. Alternate title: I found Pennsylvanian fossilized Sesame Wasa Crispbread; is it safe to eat? I have visited the Pennsylvanian Naco Formation east of Payson, Arizona several times this long hot summer and found some interesting sponges. My most interesting find was this 5 cm wide sponge that looked almost exactly like a Wasa Crispbread with sesame seeds on top. I was about to nickname it a Wasa sponge until I found out that it had a genus name: Stioderma. Pennsylvanian Desmoinian Stioderma occur in Texas. Link It is amazing how many fossils I have identified from the Pennsylvanian Naco Formation by reading references from fossils found in Texas and Oklahoma: thanks. link to Collections I found a new 5 cm sponge that sort of looks like a horn coral, but it has spicules. The area contained the usual suspects such as this 165 mm long Wewokella solida Link. and this 50 mm Chaunactis olsoni that the Arizona Museum of Natural History expresses interest in and hopefully will get it.
  22. DPS Ammonite

    Stioderma Sponge

    Stioderma coscinum from Rigby and Mapes 2000. Sponges are common in the Pennsylvanian Naco Formation of central Arizona. A friend and I collected pieces of Stioderma sponges near Roberts Mesa. Stioderma sponges have a set of very distinctive features that make an ID much easier than other Arizona sponges. They have spicules that are distally modified into layered rounded pustules that are set atop a surface with funnel shaped holes. My sponge has an edge that curves under and is covered with pustules. Further research might reveal what species they are. Stioderma genus erected by Finks: Finks, Robert M. (1960). Late Paleozoic sponge faunas of the Texas region: The siliceous sponges. Bulletin of the American Museum of Natural History 120(1):1-160 found at http://digitallibrary.amnh.org/handle/2246/1220 Stioderma coscinum found in Desmoinian Age Millsap Lake Formation in Texas: Rigby, J. K. and Mapes, R. H. 2000. Some Pennsylvanian and Permian sponges from southwestern Oklahoma and north-central Texas. Brigham Young University Geology Studies, v. 45, p. 25–67. http://geology.byu.edu/Home/sites/default/files/geo_stud_vol_45_rigby_mapes.pdf Spanish Stioderma: Diego C. García-Bellido, & Rigby, J. (2004). Devonian and Carboniferous Sponges from Spain. Journal of Paleontology, 78(3), 431-455. Retrieved September 30, 2020, from http://www.jstor.org/stable/4094858
  23. RetiredLawyer

    Skin impression

    Found a messy chirotherium footprint but has skin impression with it.
  24. RetiredLawyer

    The summer haul

    One summer, tons of sand and rock and twelve pairs of gloves later. Should have just moved the house to the fossils.
  25. RetiredLawyer

    Some new tracks

    Been mostly clearing out sand but did find a nice rock yesterday. Don’t know what the splayed toe print is.
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