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Found 104 results

  1. Please help identify

    Is this possibly stromatolites? Found just north of Golden Shores, Arizona, in a dry wash in loose material on the bank of the wash. Thank you for any help, very new to collecting fossils.
  2. Arizona's state dinosaur

    http://ktar.com/story/2018935/arizona-officially-names-sonorasaurus-state-dinosaur/
  3. Some Arizona Wood

    Here are some quick pics of what I've got so far. https://flic.kr/s/aHsmhX87Vr Dug a 5 gallon bucket worth and have three large pieces. The two in the trunk are a matched pair, full rounds. The large chunk with quartz vug is cool. I gave it a 2 hour treatment today in iron out and then a water soak. Quartz looks clean. There is a bit of groutite. Am going back out for a dig in the morning and I'm taking 3 more buckets. Cant wait to see what we end up with. Russ
  4. Devonian Bones

    I was exploring a canyon south of Globe, Arizona in the Mescal Mountains where I found two bones in the Devonian Martin Formation, (Frasnian Age, 372-383 mya). Do you agree that they are bones? If so, what type of bones from what creature? I see that the only vertebrates in existence were fish and possibly the earliest tetrapods. See table of Arizona vertebrate fossils found in: DAVID K. ELLIOTT and RONALD C. BLAKEY, “THE PRE-PERMIAN VERTEBRATE RECORD IN ARIZONA”, Heckert, A.B., and Lucas, S.G., eds., 2005, Vertebrate Paleontology in Arizona. New Mexico Museum of Natural History and Science Bulletin No. 29. 19 mm diameter US penney for scale. Photo P1020698 left side detail of Photo P1020702 Photo P1020702 I have several detailed photos of this one if needed. Photo P1020705 Second bone I found on top of same layer a few feet away. Same animal?
  5. Fossil ID

    Yesterday, I visited the famous Moenkopi Dinosaur Tracks site. The lady to guided me pointed out shiny rocks, which she said were jasper fossil corals. She let me collect them while I was being guided. I'm sure the pieces are jasper, but I'm not sure of they're pieces of coral. Are they? In addition, there were some other things she pointed out, such as dinosaur eggs, skulls, coprolites, and vertebrae. I already knew these were suggestively shaped pieces of sandstone. I'm sure this misinformation wasn't on purpose, though.
  6. Sites Near Page?

    Are there any fossil sites at or near Page, Arizona?
  7. Arizona ID request

    While hiking in Arizona last year I saw dozen of tiny fossils very similar to what I find back home in Illinois, so I left most of them there (I was already carrying 50lbs on my back and didn’t want more weight). But I brought a few pieces back as a keepsake. Any special IDs for this guys due to their location?
  8. Hi all, Last weekend was an awesome trip back to a site we had not been to in over 10 years. This location offers three geologic formations from Devonian to Pennsylvanian. I put a write up together for all of you on what we found, and the sites, and finally the fossils after we plunged them into the acid bath to extract them! Thanks for looking! Devonian and Pennsylvanian Fossils in the Martin and Naco Limestones Coral Locality at Tonto Creek At the convergence of the Tonto and Horton creeks east of Payson, we find three primary formations, all with some type of fossils. The lowest in the stratagraphic column is the Devonian Martin formation, a pink hued platy limestone with trace fossils and a low diversity of silicified tabulate and rugose corals. Lying directly over is the gray and melted looking Redwall Limestone. Dominated by crinoidal material in the limestones, it contains beds of brown cherts with molds of a huge variety of invertebrates. Also localized beds of oolitic limestone found in the same area contain huge Straparollus gastropods. And finally, overlying the Redwall is the Pennsylvanian Naco formation. Again many crinoids in the limestones which are more angular and reddish stained. Beds of brown/red cherts can be either totally non fossiliferous or contain both molds and casts of corals, sponges and crinoids. This locality within a half mile area contains all three formations and is a great place to spend a few hours hiking in a stunning backdrop of pine trees and flowing rivers! The Martin Limestone Locality: Here I am seen at the Disphyllum coral locality in the pink platy limestones. Dawn finds hordes of Disphyllum tubes lying right on the ground here! Fossils from the Naco near the Power Line road: Here we walked along this road to find large amounts of red cherts, some highly fossiliferous. Up ahead is the Mogollon Rim, the south end of the Colorado Plateau. Bone fragment found in Naco. This type of fossil is very rare - Most of the time we find sharks teeth that are very tiny. But here, a big piece of what is most likely a fish bone in a huge boulder. (Yes, its still there). Now some of you may question how we know this is a bone and not just a piece of petrified wood or something. First, of all, this is a deep water marine environment, with a depth around 200 meters. Bone also does not have the exterior detail of wood. Finally, it easily passed the famous "Lick and stick" test. This is where you lick your finger, and touch the fossil. The porous nature of fossil bone causes your finger to stick like touching a piece of scotch tape, and the surrounding rock will just get wet and not stick. Sharks teeth from this formation do the same thing. Aulopora - such a beautiful coral, this is a colonial tabulate with no septa visible. Side view of Disphyllum colonial rugose shows the branching pipes from a common attachment base. Disphyllum - End view of calice interiors showing septa. Unknown and poorly preserved colonial rugose from the same area. Composita c.f. Composita Subtilita brachiopods in red cherts. These were found loose on the ground. Spirifer brachs too! Disphyllum on the left and Aulopora on the right. The Aulopora was very fragmented, and if we left the limestone in the acid too long, all we would get is a pile of pieces. So as in this specimen, we only dissolved the rocks about half way down to provide a stable base to hold the corals. Even so, you have to be pretty careful on handling them! Thanks for looking. Many more shots including close ups with the microscope can be found here on our web site: http://www.schursastrophotography.com/paleo/Disphyllum022218.html
  9. Lack of snow cover and warmer than average temps allowed me to explore and collect sponges and corals from the Pennsylvanian Naco Formation in central Arizona, north of Payson. Widespread chert of the Beta Member suggests that silicious sponges may have been common. Several have been identified but many more exist. I have seen and collected several undescribed species. Dilliard and Rigby have described several sponges including Chaunactis olsoni which I found in the area: The New Demosponges, Chaunactis olsoni and. Haplistion nacoense, and Associated Sponges from the. Pennsylvanian Naco Formation, Central Arizona. by DILLIARD and RIGBY http://geology.byu.edu/Home/sites/default/files/geo_stud_vol_46_dilliard_rigby.pdf Photo 1a. Detail of undesribed sponge. Marks are 1/16th inch. Any ideas? Photo 2. 3/4 quater view of sponge in photo 1a. Note red 1/3 to 2/3 inch thick pancake-like form of sponge. Photo 4. Top of another similiar sponge. Marks are 1/16th inch. Help me ID 2 corals and one sponge. Photo 3. Coral, Multithecopora?, which has been reported from the Naco many miles to the south. Photo 5. Probably Chaetetes, a side view. Photo 5a. Top of Chaetetes. Photo 6. Horn Coral, Zaphrentis? 1a.docx 2.docx 4.docx 3.docx 5.docx 5a.docx 6.docx
  10. Hunting for eggs

    Hi my name is Roanne.New to this site.I recently hiked out here in northern Arizona where a freiind of mine told me they found fossil eggs. I did come by a spot where it looks like the so called eggs got washed down the mountain. We are talking more than one size egg here. Arizona's climate is quite different than other parts of the us. I find tons of petrified wood all over my yard.,in every color you can imagine and so much different types of rocks and minerals all in one location.When we flooded way back when dinos roamed the earth, wouldnt they have gone to the highest points to live and lay there eggs. So why couldnt these possibly be from way back than.? I did crack a few of them open and definetly looks like something was there.
  11. Crinoid?

    Is there anyone who would possibly agree that this fossil might not be from a crinoid? The dimensions are about 3cm long and up to 2cm wide. After viewing numerous fossils of this sort, in a Leonardian formation, they are rarely, if ever, found in groups of more than three, and the occurrences always look the same as in the images attached. If there is no doubt that it is a crinoid, would you please post which might show a convincing likeness? Other than curled arm or columnal (stem disc) I am at a loss and by far much less than a novice paleontologist. Thanks for any help and forgive me if my terminology is not spot on.
  12. "Fish" bone from Penn. Naco Formation?

    HI all, A fantastic fossil expedition yesterday up on the foothills of the Mogollon Rim in northern Arizona in the Pennsylvanian Naco formation. Besides the hordes of corals we picked up for the acid bath, I found this large piece of bone material in rather large rock eroding out. It is no doubt bone, since it also passes the "lick and stick" test well. The unique cupped end might make it easier to identify. We gravitate toward invertebrates and plant material, however we wont pass up on a nice sharks tooth or bone fragment if we find it in such deep water marine material! What are your thoughts? We covered it up and marked the spot so we can go back at some point and try to extract it if warranted. I did my best to get a clear shot of it, and think I did well considering its a small hand held digicam.
  13. HI all, Were going through our cambrian material from the Upper Cambrian Abrigo formation from southern Arizona, and besides hordes of trilobite bits, we have found two similar calcified items in the limestones which we are not certain of. I think they are either plates from an eocrinoid, or sclerites from some sort of bottom dwelling crawly thing. Now we do very occasionally find stem ossicles here, very rare in the upper cambrian, but dont know if they are crinoid or other stemmed pelmatozoan. Here is the photos I just took, let me know your thoughts!
  14. Hi all, I am going through the latest finds from our trip to the upper cambrian Abrigo Formation from south eastern Arizona, and one of the limestone pieces under magnification had some intriguing fossils. The fossils are calcified as are all the trilobites and brachs in the same material from this site, and are small spheres about 1mm in size with a hole in one end. My first thought was some sort of protist, but my micro paleontology friend suggested they might be tiny round sponges. I have lots of photos to share with you on these enigmatic fossils. What do you think? 7x view of a gaggle of them on the limestone: And a series of 40x close ups of individuals: Microsponges or non fossils?
  15. Sponge ID

    What type is this sponge from the Pennsylvanian Naco Fm. from near Payson, Arizona? The silicified sponge is about 1.5 to 2 inches across. Was it originally a silicious or calcareous sponge? Does anyone know of an expert who is interested in undescribed sponges from Arizona/USA? I know of at least 3 other undescribed Arizona sponges. Thanks, John
  16. Hi all, Winter is the perfect time of the year to collect cambrian fossils in South Eastern Arizona. Its temperatures are perfect, its not raining and traffic is low. We will have lots of material to cover here, but I thought Id start off by posting a few shots of tiny inarticulate brachs from tonights scope shooting session. I used photoshops "contact sheet" function and it worked pretty good. The Abrigo is middle cambrian and upper cambrian. The lower part is the same age (and ocean) as the Bright Angel Shale in northern Arizona. The upper Abrigo is upper Cambrian and is a latter period which is not represented in the BAS. I wont be identifying these at this point, but they are probably Lingulella or Billinslella sp. Oh isnt the Cambrian FUN?!
  17. Naco Fm. fossil

    I found this "spiky head" chert fossil in Pennsylvanian Naco Formation Limestone NW of Payson, Arizona near Pine. The "head" is about 1/3 inch across. Is it a crinoid head without arms, what kind? Thanks, John
  18. Unknown Glossy patch

    Arizona, Mississippian, Redwall limestone, Mooney member. Hello, hope everyone had a good Christmas. About a week ago I found the first one of these two. Flipped the rock over and the small glossy area really stood out. First one I've seen. Then today I found another, about the same size, roughly 3/8". I have no idea what this could be, any thoughts would be appreciated. @Arizona Chris have you run across this?
  19. Hi All, This marks the final chapter of this years exploration of the Permian Fort Apache Limestone micro fauna found east of Payson, Arizona. This entailed sorting throgh thousands and thousands of tiny gastropods under the microscope, and catagorizing them into 22 types. We then set out to identify as many as possible. Here is a part of the photo tour, the rest can be found on our website! Gastropods / Monoplacophorans from the Permian Fort Apache Limestone East of Payson By far, the largest project in the Fort Apache Limestone series! We found more tiny gastropods than any other type of fossils in the acid fines. Literally thousands and thousands of pinhead sized gastropods and monoplacophorans were found, and after months of picking through the residues, we had several teaspoons of the microscopic fossils. The sorting process took weeks and we decided to sort them according to morphological type. This yielded 22 different varieties, some of which may have been duplicates that were preserved different or incompletely. Fortunately for us, Winters in his huge GSA 89 monograph identified scores of gastropods making many of the identifications possible for us. We also found several types which he did not show or mention. The conclusions that can be drawn from our gastropods is still clear - a very muddy bottom which preserved huge numbers of juveniles either because of inclement conditions for their survival or a high mortality rate. The preservation ranges from very poor to superb. Many of the smallest fossils show amazing details in their outer shells and large numbers of ornamented types were uncovered. The most common type was the small squat cones, ten times more common than any other type. They were also the very smallest to be found as well. Bellerophon sp. - Monoplacophoran There is considerable controversy as to where Bellerophon resides in the mollusk group. Latest papers seem to indicate that it is about half way from the limpet shaped basal primitive monoplacophorans and the accepted standard gastropod. No one has ever found fossils of their soft anatomy, and until this occurs, they will remain an enigma. Ribbed Cones (Paleostylus giganticus) Honey Buns (Apachella prodontia) 10x view of a nice collection of bun shaped gastropods with a unique proto conch region. Ornamented Rimmed Buns (Worthenia arizonensis) Fantastic ornamentation on these! Ribbed Bellerophon shaped Gastropods (Knighties modestus) These look very much like a Bellerophon but they do not have the same fine features defining that group. They are much smaller too, pin head sized. than Many Many more can be seen on our web site, Thanks for looking! our web site page: http://www.schursastrophotography.com/paleo/Fortapache-15.html
  20. Hi all, Slowly the pieces are coming together for our Permian panorama. This week I tried to make my first drawing ever of a crinoid. In my first attempt, things did not go well. Think of a kindergarteners crayon sketch of a big flower, and you get the idea. Next, I spent days studying the anatomy of crinoids in the Index Fossils of North America book and the Treatiis. My second attempt was more ghoulish stick figure than crinoid, and went in the trash. Finally, in the past few days I got something closer to reality. I hope you find it amusing....
  21. Hi all, We are on the last two major topics in this formation before we finish off the entire Fort Apache Limestone Project. This week, we examine the enigmatic two species of Straparollus gastropods in detail, from pin head sized juviniles through teenagers starting to get thier whorl ornaments to 6 inch monsters. The shape of this flat planispiral mollusk is unmistakeable, and to actually be able to see an entire growth series in our fossils was highly enlightening! So without delay, here is a synopsis of our latest photo pictorial on Straparollus. (Full write up with many more images can be found on our palo web site: http://www.schursastrophotography.com/paleo/Fortapache-14.html) Straparollus (Euomphalus) Gastropods from the Permian Fort Apache Limestone East of Payson. This is the only planispiral gastropod to be had in any quantity in the Fort Apache Limestone. The size range of specimens is huge, ranging from pinhead size microscopic juveniles up to six inch monsters found impressed in the limestones. And to add as a bonus - two species are found here in this formation - Straparollus sp. and Straparollus kaibabensis. Straparollus gastropods are unusual in that they have a nearly square cross section of their tubes, and are quite flat on the sides as well. While most Straparollus are rimmed with a linear continuous rib on the outer coils, Straparollus Kaibabensis is nearly unique in that it has nodes or tubercles along its coils instead. This makes it appear at first glance to be a nautiloid, however without any septa or the pear shape opening cephalopods have, they are simply huge gastropods. Winters found both types as well in his GSA Memoir 89 from outcrops all on the Fort Apache Indian reservation. Our finds include many silicified specimens, most partials, and several limestone impressions as molds. Also, they can be very small indeed, the smallest members are best seen in the microscope at 30x magnification. This contrasts with the monstrous specimen we found back in 2006 that was over six inches in diameter! Straparollus (Euomphalus) Kaibabensis - Quick Cam shots The outer 2 or 3 whorls is where the nodes develop in mature specimens. This partial outer arc shows them very well. The entire outside rim of the shell is wider as a result of these ornaments. (Straparollus kaibabensis) Dorsal view of the same conch, which you can see the swelling of the width for every node present. This also gives it a very nautiloid like appearance. (Straparollus kaibabensis) Inside view shows the double wall that is characteristic of Straparollus. This is another feature that differentiates it from nautiloids in the field. (Straparollus kaibabensis) Straparollus (Euomphalus) Kaibabensis - Digicam Shots This big fella was found back in 2006 on an expedition with some museum members on an exploratory hike. I hauled this one back in my back pack over 2 miles to the truck. Its preservation is poor, but you can easily see the nodes. Straparollus (Euomphalus) sp. - Microscope shots A gorgeous miniature Straparollus! You can see the coils have gaps between them here as well. The ridges and nodes have not developed yet. This juvenile is starting to show the beginnings of the linear ribbing. It will grow very fast. While a bit distorted from compression of overlying sediments, this complete specimen shows the linear ridges well and detail all the way into the protoconch. I left it in the limestone along with some beautiful cone shaped gastropods for a composite view of the sea bottom. It almost looks as if its sitting in the bottom muds. Well thats it for this week. This was a really rewarding study of this amazing mollusk. Next week is the really big project - all the rest of the thousands of small gastropods. I promise not to show you ALL of them!
  22. Id like your opinion on this one....

    Hi All, This is one of a kind - we found only ONE of these in 250 pounds of Permian limestone that we reduced in the acid bath over the past few months. Its a lovely thing, I think its a stellate miniature ins branching sponge, but Id like your opinion. Its hollow inside the main tube, and no pits or chambers like a bryozoan. Anyone seen a tiny sponge like this? Here is top and bottom shots: (20 layer stacks!) Your opinion is appreciated!
  23. Crinoid arms?

    Arizona, Redwall limestone, Mooney member. I've found several examples of what look like plants but because they are around crinoids I'm thinking possibly crinoid arms. Anyone know what these are? Thanks
  24. Hi All, Another chapter done on our study of the enigmatic Fort Apache Limestone! We found one orthocone, and juvenile coiled conchs in our search in 250 pounds of limestones. One larger specimen which we thought was a huge nautiloid turned out to be a big Straparollus gastropod when we finally made a clay cast of the mold in limestone. So without delay, here is this weeks write up! Lower Permian Nautiloids are found in both the Fort Apache Limestone, and overlying Kaibab formation. Far more commonly found in the Kaibab, they range in size from quarter sized to 12 inch monsters. But in the Fort Apache, we have found so far only two nautiloids in our years of searching. Fortunately, they are both different morphologically and offer an interesting cross section of cephalopod life in the Fort Apache Sea. It is notable that Winters, in his monumental GSA monograph memoir 89 found only the orthocone type and identified it tentatively as Psudorothoceras knoxense. Aperture comparison. The differences in similar mollusks can be ascertained by comparing the shapes of the openings. (Aperture) On the left, Bellerophon - a monoplacophoran has a decidedly triangular opening. Center are a gastropod called Knightites sp. which looks very much like a small Bellerophontid, but is a gastropod. And on the right, the cephalopods have a much larger and oval opening, such as the small pea sized specimen we found below. This little cutie was found mixed in with our first picks for gastropods out of the acid fines. This was the only one like this, and you can clearly see the septa evenly spaced along its periphery. The center is filled in with sediment thus appears as a mound here hiding the details of the inner whorls. View of the aperture, a bit crushed showing the inner whorls tucking into the opening oh-so-nautiloid style! Orthocone nautiloid section found at site 2 as well. This is an orthoceras type cf. Psudorothoceras knoxense. The septa can be seen inside the eroded openings in the outer conch. Fortunately, one end has a great view of one of the concave septa. This then would have been the side that the animal lived on in the conch. It is difficult to say how long the original conch was, perhaps 6 inches or so. We Well, thats it for this week. We were hoping for some really big nautiloids like we find in the overlying Kaibab formation - which is the same age. But no, that will have to wait till next year! Next weeks posting will be on the gorgeous Straparollus gastropods we found, ranging in size from pinhead to hefty 6 inchers.
  25. Crinoids and what are these?

    NW Arizona, Redwall limestone, Mooney Falls member. Hello, I found an area with lots of crinoid parts. There were also a few of these dimpled rocks and some with holes all the way through, some tapered. Any ideas what these are? Thanks
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