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Found 17 results
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Please help ID these Pennsylvanian Naco Formation trace fossils from central Arizona. Help Chris. @Arizona Chris Are the 1 cm wide chevron tracts in photo 3 Cruziana from trilobites? What are the 2.5 - 3 cm long teardrop shaped features in photos 1 and 2? What are the 2.5 - 3 cm long teardrop shaped features in photos 1 and 2? What are the elongated traces 3.5 to 4.5 cm long with length parallel marks in photo 4? From crustaceans?
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I found this while hiking north of Payson, AZ, by the Tonto National Forest. Not sure if it is anything fossil related, looks like a foot with toes or something with teeth, or just a rock. The smaller rock was just used to prop it up for the picture. Thanks for your assistance!
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Looked odd , found them both along roadside very near to my petrified log find ( not implying they are related) your input is greatly appreciated.
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Hi All, any thoughts on these specimens? Location is Roberts Mesa in Gila County, Arizona. (east of Payson) The red coral-like stems were found loosely on the ground very near the red trunk and gray matrix pieces. So I’m making some assumptions that the two are related as they were found maybe within 100 meters of one another. And the red stems above looked similar to the red trunks below of course. My first thoughts are some sort of coral but could they be a sponge instead? I’m assuming all are Naco Formation? Comments welcome. Photo size reference is in inches.
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Crania Crania modesta is a rare calcium carbonate Pennsylvanian inarticulate brachiopod. The shell is very thin and the ornamentation of the shell below shows through. You can see the interior of a near circular 4.6 by 4.8 mm pedicle valve that attached itself to aLinoproductus prattenianus (photo #1). A bryozoan also covers the front and back of the Linoproductus (photos #2 & #4). Photo #2 is a different photo of the same Crania as in photo #1. The Crania has a thickened rim and a sub central knob. Rowell (1965, p. 289) lists Crania as the only Pennsylvanian genus with a calci
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- crania modesta
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While removing an unknown sponge by acid dissolution 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. The pedicle valve of the brachiopod in the first and second photos is about 1 inch wide not including spines. This is the finest specimen with spines that I have found. The third photo shows the brachiopod attached to several oth
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- gila county
- fort apache member
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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
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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
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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 Pennsy
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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. S
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This is the largest Wewokella solida that I have found from the Pennsylvanian Naco Formation in Arizona. It is a thick-walled, sub-cylindrical, hollow sponge with simple mostly 4 to 2 pointed spicules. It is differentiated from the related Regispongia genus that has spicules with many more points, polyactine. Sponge is found from the Middle Pennsylvanian to the Early Permian in Arizona, Texas, Oklahoma, Utah, Ohio and maybe New Mexico. Description from Girty: “WEWOKELLA SOLIDA Girty. Plate I, figures 12-13b. 1911. Wewokella solida. Girty, New Yo
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- gila county
- porifera
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Michelinia is a less common, but widely distributed coral in the Pennsylvanian Naco Formation in north central Arizona. The coral lacks noticeable septa and has tabulae that are often convex upward. Dozens of silicified colonies ranging from less than 1 cm to 25 cm across were found in a several meter square area with several species of brachiopods, horn corals and crinoid stems. Mindat: https://www.mindat.org/taxon-3250564.html
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While removing out 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.
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- bellaclathrus spinosus
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A few days ago I found a very productive fossil site in the Pennsylvanian Naco Formation in central Arizona. I went up to look at an interesting new track site in the Permian Coconino Sandstone NE of Payson that was found by a friend and is being studied by the prolific Spencer Lucas from New Mexico. Link The Naco Formation site that I just found, has the most diversity of sponges of any Naco site to date. It also has lots of large brachiopods. Photo 1 shows a 3.4881 × 10-18 light years (3.3 cm) long Composita subtilita brachiopod, the largest that I have seen.
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- arizona
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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
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- schnebley hill formation
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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 fossil
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- srtomatoporoids
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This is a common brachiopod found in the Naco Formation Limestone that crops out below the Mogollon Rim in central Arizona.
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- gila county
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