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  1. fowells

    Prosper, TX Cephalopods?

    Construction site in Prosper, TX. The only rocks of good size in the native site soil are these big limestone nodules. I think they are cephalopods. Thoughts? Thx, fowells
  2. mjstephens

    Tooth ID help please

    Hello Group. I have had this concretion for years, unopened. It fell of a table while outside, during a move. I finished the breakout manually. If memory serves me, It came from the Lake Texoma shoreline during a drought. It looks like pics i found of shell crushers teeth. I didn't want to do anything to it without knowing anything about it. Any help in identification would be greatly appreciated. Thoughts and comments welcome. Please excuse the poor photography. I will get better pics soon. This "stone" almost went in the garden last week.
  3. I have a set of very small brachiopods from the Ozan Formation (Upper Cretaceous, Campanian) of north Texas (Fannin County, near the North Sulphur River). Some pictures have scale bars, others do not, but the largest of these shells is ~4mm (they are roughly equidimensional). They are not a rare shell in the matrix, but are small and are not abundant. I collected 57 pieces of them out of 3-4000 fossil items picked from the 12 mesh matrix fraction. I have not found a direct match in my literature and website searches so far, so I am looking for some help from our brachiopods gurus @Tidgy's Dad, @Misha, @Jeffrey P, @Thomas.Dodson @Fossildude19 and anyone else who might care to voice an opinion. Also our North (or even Central) Texas folks surely might have some valuable insight: @BobWill, @JamieLynn @ThePhysicist @JohnJ @erose, @grandpa, @Uncle Siphuncle just to call out a few. Maybe the Dallas Paleo Society has looked into these. I'll start with just a bit of background info first. These brachiopods are not new, but may be as yet officially unidentified, but that is what I hope to find out. Cretaceous brachiopods in Texas are not that common, other than Kingena (Waconella) wacoensis and these are clearly not that species. The 2019 version of the Fossils Collectors Guidebook to the North Sulphur River shows some similar looking specimens on Page 45 (Figure 8) but lists them as "small indeterminate rhynchonellid brachiopods". G.A. Cooper in a 1973 publication named a new terebratulid genus, Cricosia, which was found rarely in the Upper Cretaceous of Texas which bears some similarities and D.V. Ager, et al published a Journal of Paleontology paper in 1963 which discussed two genera (Cyclothyris and Lamellorhynchia) of rhynchonellid brachiopods which bear a passing resemblance (but have some major differences) and I have seen on other websites attributed to specimens from north Texas. As far as I know, that is about the extent of published brachiopods from the Cretaceous of Texas. If I have missed any others, perhaps that are too dissimilar from mine to have come across my radar, but if you are aware of others, please let me know. So my first question as I started looking for an ID, which Order of brachiopods do mine belong to? I thought this would be easy, I was wrong. While brachiopod diversity was very high in the Paleozoic, by the late Mesozoic (specifically Cretaceous) there were only two Orders of articulate brachiopods left, the Terebratulida and Rhynchonellida. That should be easy, only two to choose from. Unfortunately, the brachiopods in question don't fit nicely into the common forms of either one. I made a little table of the common features of the two orders based on information from the Treatise of Invertebrate Paleontology (Part H) and highlighted which features are present (check mark) or absent (no go sign) in the specimens in question. Probably the most important feature that distinguishes the two orders, is the support of the lophophore, (the internal feeding mechanism) and I don't have preserved features which make this obvious. On the outside, terebratulids are normally smooth with a curved hinge, mine are ribbed with a straight hinge. Rhynchonellids are normally very biconvex, have a strong fold and sulcus and the line where the two valves join is zig-zig due to very coarse ribbing, mine have none of these features. I can not see any punctae in the shells, but I always struggle with this and maybe the preservation in just not good enough to preserve this microscopic feature. One last thing I read is that rhynchonellids have strong hinge teeth and tend to be most commonly preserved as complete shells (both valves together). I have a couple of articulated specimens, but most of mine are isolated brachial or (less common) pedicle valves. So I am leaning to Terebratulid, but not positive. OK, enough yakking, lets look at them: The brachial valve interiors I think hold some of the most important features for determining an ID. In these you can see that the pedicle opening is not closed, but is an open triangular shape. On this one you can see that the ribbing is somewhat beaded and that the umbo area is somewhat smooth. You don't see that preserved on all of them. I know this is a lousy picture, but you can see the biconvex profile with the pedicle valve on the left and the pedicle opening at the top. In all cases the pedicle valve is quite inflated and the brachial valve is either flat or slightly convex. Here are two different shells in anterior view showing the straight line of junction between the two valves (sorry from the glob of sticky stuff on the top specimen). One is very biconvex, the other is planoconvex. Thee is no hint of a fold or sulcus. Here is a detailed view of the brachial valve interior with some lighting from the side to try and show the crura (right one is in red circle) which are paired processes that stick up and I believe were the base of the calcareous loop that supported the lophophore. So I am asking for any help in pinning a name to these. I'd be happy with a genus but will even settle for a family. Based on searching through the Treatise and reading several publications, I believe they are Terebratulids in the Family Cancellothyrididae. I believe the very distinct processes I see sticking up (red circles), the shape of the cardinal process and the lack of a median septum rule out any rhynchonellids, but I could be mistaken. The genus Cricosia is the closest I can find and it has been reported from Texas, but these are definitely different from Cricosia filosa (Conrad), which I believe is the only species described. Below are snippets from The 1973 Cooper paper of Cricosia and the one on the right is from the Treatise. You can see the shape is similar (straight hinge is very uncommon in terebratulids), the cardinal process is very similar, but the ornamentation is very different (the whole family is one of the few in terebratulida that has ribbing). Of course, my specimens are missing the whole loop feature that is so important, I only have the base of the feature (and is the Treatise diagram, those are reconstructed). Thanks for looking and I appreciate any insights. I can provide more info or other pictures if needed. Mike
  4. I find skulls one of the most interesting pieces of fossil you can ever own. So here I'd love to see all of your fossil skulls, or parts of one. Here is my Pleistocene era skull of a Ursus arctos. An ice age brown bear. Very very uncommon find.
  5. Hi everyone, I am trying to find the following stuff someone is willing to trade. - Mosasaurus partial jaws or matrix pieces, not repaired or restored. From Morocco. - Belgian Megalodon teeth - Mastodon tooth - Quality Spinosaurus teeth, larger ones. I got a lot to offer, mostly teeth and jaws from dinosaurs and ice age relater animals.
  6. Yoda

    Amber with cracks

    Question for the Amber experts : Recently I was looking at some of my Amber (Burmite) with inclusions with my magnifying glass Quite a few of them have internal cracks. Is this likely to become a problem some time in the future ? Are the cracks likely to develop further ? And possibly ruin the piece ? Any way of preventing that ? Soaking in some sort of consolidant or oil ?
  7. DenverEdge

    Another Kem Kem vert Denver show

    I got another vert looks decent and different than the other ones i got.
  8. expatspain

    Bizarre, just rock formation?

    To follow my previous post because this was found at the same location. I have never seen anything like this, surrounding the entire rock. I am at your mercy.
  9. expatspain

    Mysterious object on rock

    In the area Cabo de Gata in SE Spain is what is known as fossil beach because of it's feature, a fossilised dune. It is also a very popular place for fossil and mineral collectors. Walking there today and casually moving rocks and stones, I came across these two items which I will post separately. The first is an object that to the touch is solid and is very firmly attached to the rock surface. Around it appears to be some markings that do not appear anywhere else on the rock. I have been unable to locate a similar image on the web.
  10. Ollie77777

    Eggy ID

    Hi I am hoping for an ID of this specimen I found around chalk cliffs on the north Norfolk coast UK. There are several echinoids, belemnites etc but I’ve not seen anything quite like this. My first thought was an egg but I know they’re pretty rare so I’m not too convinced, especially without any notable markings. It does however have a brittle shell like coating so it has me stumped. It’s approx 11cm. im new to this group so if I’ve missed any details please let me know. Thanks
  11. bthemoose

    Texas fossil shell

    I'm visiting family in San Antonio, Texas, and have been doing a little fossil hunting as well, including in a nearby creek. Based on a local geologic map, I believe this creek mostly exposes the Edwards Group (Albian age), though there appear to be some younger (Cenomanian age) rocks from the Del Rio Formation mixed in as well, based on an Ilymatogyra arietina shell that I found a couple of days ago. This creek isn't very fossiliferous. In about 3 hours of searching, I've only found a single I. arietina and a few small shell impressions in rocks. However, today, I also found the rock below and am wondering if it's something more. I am moderately confident that the bit in the lower right is a shell impression. What I'm unsure of is whether there's a bigger (worn) shell mold here too or just a bit of pareidolia. Any thoughts? Here's the outline of what I'm seeing -- the dimensions of what I've outlined are approximately 7cm wide x 6cm tall. Here's further detail of the part in the lower right that I'm more confident is part of a fossil shell/shell impression: The "shell mold" is raised relative to the surrounding rock, though is pretty heavily eroded if it is a fossil: Here as well is the I. arietina I found -- no doubt that this one's a fossil at least! And here's a wider shot of the creek: Thanks for looking!
  12. Hello again HappyDigsters!! We found some shiny fossil spaghetti!!! In the shale formations sifting through the fines and we discovered this little strange object...maybe some fins or feathers all bunched up. Thanks again for the help
  13. grg1109

    Assorted sea shells from the UK

    I purchased some "fossil rocks" from the UK. The darker ones are from the cretaceous greensand of shanklin. The White chalk one is from the Isle of Wight. Thanks Greg
  14. Hey all, Went and tried my luck at Ramanessin Brook. Had a blast finding teeth but when it came to looking at IDs this one stumped me. It has a slight curvature and is shaped different than any enchodus tooth I have found so I think it is safe to rule that out. It reminds me of potentially Xiphactinus or Reptile (specifically plesiosaur) although the size is only 1.2 cm. Any input helps! I can always take more pics if needed. thanks!
  15. Left sand dollar is modern day I found in the Red Sea on the right is a fossil sand dollar I found embedded in limestone on dry land this is all in Saudi Arabia when I checked the last time it was underwater was in the Cretaceous I want to know as much as possible about this both sand dollars are very different in size and shape for it to adapt this much it must be millions of years old
  16. From the album: Cephalopods Worldwide

    Ø7.5cm. Also known as H.birkelundi Fox Hills Formation Maastrichtian Late Cretaceous Found near E. Rapid City, South Dakota, USA
  17. devlincdev1997

    trying to identify another find

    The front, back, side and bottom of whatever this could be? I could not find anything to measure it with but for now hopefully the pictures alone help for the meantime. The shape of it reminds me of a bone for some reason so that's my guess as to what it could be; not quite sure of what this texture on it is though, i scraped a bit of it off fairly easily and it was dusty brown coming off of it, but not too hard when scraping the surface it barely had any resistance. I tried scraping the exposed part of my other find; the iron concretion to compare the 2 and the concretion was much more durable on it's exposed part to try ruling out if it is just another ironstone concretion. It was found in the same brook called "big brook preserve" in central new jersey in the united states. Another possibility that I've came up with is that this find might be a concretion but not nearly as old and formed yet. Right now it could be anything. Thank you to whoever responds and helps with this post; very much appreciated.
  18. Dale H

    Identification assistance

    I need assistance with identification of several items. Any thoughts. North Texas cretaceous.
  19. MONTANA, Rosebud County find but within eyesight of Garfield County. This was not found in situ but recovered at the bottom of a wash along with dozens of other fragments. The smaller piece attached below is from the same section. Size of dental battery is 9"x4". Size of smaller tooth section is 3"x2".
  20. denise.ereka

    Hays County, Texas

    This may be a wild goose hunt, but my teens brought back two rocks (private land, permitted collection) near Wimberley, Texas in Hays County. I'm hoping to have some rough idea of if they are fossils and what general family they may have fallen into. I apologize for the lack of a ruler as I am not at home. The large disk shaped possible fossil is about an inch and a quarter across. The larger flat one is about an inch and a half. If anyone has recommended resources for better understanding the geology and fossil history of this area, I would be grateful for any direction.
  21. Following the naming convention of others before me, I had the 1st hunting trip of the new decade (at least at Big Brook!). I was the only one in the parking lot 1/1/20. I think I've actually hunted all three holidays this season, and enjoyed the nice time in nature. Here are some of my finds. Andy
  22. I took my 8 yr old nephew to NSR, North Sulfer River today and found a few things but could not ID these. Any help would be awesome
  23. Hello, so i was thinking about buying this tooth, what do you think of it? is it real? Thanks.
  24. So I recently got this Baltic amber and I found out that there is a test that includes water and salt and if the amber sinks then it's fake but if it floats, it's real and mine sank but I'm not sure could you please examine it yourself? And also the spino tooth if you can. Thanks
  25. I recently came across the young earth theory (the theory that earth is 10.000 years old and dinosaurs coexisted with humans and traveled with Noah and his ark) and of course i thought it was unfeasible but one common argument they keep having is why are we finding soft tissues, proteins and other biochemicals in fossils like triceratops, t-rex and other dinosaur bones of course that doesn't mean DNA BUT they shouldn't have been preserved because such biochemicals don't get preserved after so much time. Another one is that some old fossils are still close to the surface when they should be buried really deep. So what are your thoughts on these arguments, in my opinion this theory is ridiculous but i'd love to learn the answers. Thanks (PS sorry for asking that many questions these days its just that im new to the forum and have lots of questions)
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