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I’d like for my Post Oak Creek collection identified (specifically the shark teeth), but I can’t find much information online about the species of shark whose teeth are found here (Post Oak Creek in Sherman, Texas). When I HAVE come across general information about the creek and other peoples findings online, there aren’t any pictures of the teeth or nobody else knows exactly what they have. It’s also hard to tell if I’m grouping them correctly, so I apologize if I’m mixing some species together. The longer teeth have very similar characteristics, but greatly differ in size. And the only teeth that I HAVE been able to identify are the ptychodus teeth (not pictured), but only because they’re so unusual in appearance. Excuse the quality of the images. I don’t feel like setting up my camera right now, but I do plan on taking clearer images once I’ve correctly identified each specimen.
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- grayson county
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I’ve decided to post this one separately. Very unusual composition. If you watch the video, you’ll see that light refracts off of tiny crystals in the center of each segment (which I’ve circled in red in another image). It’s hardly noticeable. The specimen is very smooth and rounded. Another member said in a different post of mine that it could possibly be an inoceramid hinge, though my own research resulted in nothing. I can’t find anything online that remotely resembles my specimen (inoceramid or otherwise). I found it at Post Oak Creek in Sherman, Texas. FullSizeRender.MOV
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From the album: Post Oak Creek
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From the album: Post Oak Creek
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- cretaceous
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From the album: Post Oak Creek
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- cretaceous
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Hello again forum! Remember that bucket “goodie bag” I took home from the torn up Post Oak Creek a few months ago? I finally went through it and found some excellent stuff! (Im actually wow’d with some of this stuff because I’m just an amateur!) Surprisingly- I found tons of other stuff that ARENT shark teeth for once! I grabbed a 5 quart bucket and took a big shovel scoop of gravel/mud from various parts of the entrance of the creek where the construction was and some from the first sandbar. Im working on an educational frame display I might actually eventually donate (there IS a massive park being built there for tourism !) and wanted to label found bones correctly. You’d think because I come here SO often I’d be an expert at the finds here but I’m not a real paleontologist or biologist, just an outdoorsy lass who can find fossils and loves learning about ancient animals. I tried my best to ID some of these finds myself, however I just found myself stuck and not very confident with IDing these bones. Because there’s so many mammal remains found here as well I wanted to ask you guys for help- and give me pointers how to ID cretaceous reptile bone, fish bone, and mammal bones. (Teach this woman to fish metaphorically. ) Unfortunately my bone finds are worn and some are tumbled fragments which make it harder for a novice like me. Any help appreciated, and happy to learn! Post Oak Creek is in Sherman, Texas. Cretaceous, Eagle Ford and theres also “Ice Age” fossils and even more recent fossils found here too. Everything here I can confirm is fossilized and very much stone. I also added in 3 bones from last trip than need ID’d plus a few other cool things. ***I took a TON of pictures and have to load them on seperate posts-please be patient! I will add captions to them all as well so wait until I post “Done!” Sorry for super dry hands. The process! The Finds: all spread out! Ruler is in MM (milimeters). I labeled them by letters and there’s some bonus things in there to ID! These are the bones Im most curious about! (More photos below) These are more recent fossils, I feel confident at least that G, I, & J are turtle shells. No idea about H or K but might also be turtle? M & L look and feel lighter but are still very much stone- maybe mammals. Someone already helped me ID that N and O are fragments of mammoth teeth but what the heck is P!? Could it be a pig tooth or even…human!? * Bonus Round! * ?1 I think is the tiniest ptychodus tooth ever! I have no idea of the species however it’s probably one of the tony teeth in the outtermost bottom part of the jaw (the teenie long ones!) ?2 I think is some sort of spine? It almost reminds me of a belemnite or sea urchin spine. Its definitely organic and not man-made. ?3 I THINK I FOUND A NATIVE AMERICAN CLAY BEAD! I find a few of these every once in a while there, usually small. Are these little Cretaceous sponges?
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This is a Cretaceous oyster that I found in Post Oak Creek in Sherman, Texas. The oyster has traces of a yellowish calcite-cemented sandstone found in the upper part of the Arcadia Park Formation of the Eagle Ford Group. "Pediformis" in the name, Ostrea alifera var. pediformis, means foot-shaped or pediform because the oyster looks like a foot or boot. In Hill 1898, the author eliminated the Ostrea alifera Cragin, and Ostrea alifera var. pediformis Cragin names because he considered them to be Ostrea lugubris Conrad. I disagree with Hill's decision because my oyster is larger than most O. lugubris (now Cameleolopha lugubris) and lacks an attachment scar characteristic of O. lugubris. My oyster may be a genus Cameleolopha since both Cameleolopha bellaplicata and Cameleolopha lugubris occur nearby. Unless new information can be found, my oyster should be called: Ostrea alifera variety pediformis Craigin. For more information and drawings of Ostrea alifera and Ostrea alifera variety pediformis Craigin see: Cragin, F. W. 1893. "A Contribution to the Invertebrate Paleontology of the Texas Cretaceous", Austin, Texas, B.C. Jones & Co., State printers. Hill, Robert T. & T. W. Vaughan. 1898. The Lower Cretaceous *Grypheas* of the Texas region. U. S. Geological Survey, Bulletin 151: 139 pp.
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- arcadia park formation
- cretaceous
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As usual, we found the usual shark teeth in Post Oak Creek in Grayson County, but I’m unsure about this tooth. I’m very new at this, but it doesn’t have a flat backside like the typical shark tooth that we find, but it is almost a perfect oval shape. Any help is greatly appreciated. Have a great day!
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- post oak creek
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From the album: Post Oak Creek
Small "bamboo" shark teeth, about 1 mm tall.-
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From the album: Post Oak Creek
Tiny sawskate oral teeth - less than 1 mm in size.-
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From the album: Post Oak Creek
The shell of a "foram" (test). It looks like a snail or ammonite, but is actually a marine protist (only found in the oceans).-
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From the album: Post Oak Creek
A small "bamboo" shark, just 1 mm tall.-
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From the album: Post Oak Creek
Various denticles from sharks and rays sitting on the face of a dime.-
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From the album: Post Oak Creek
Rhinobatos teeth are so small they make me angry Here you see a dozen guitar fish teeth sitting on the face of a dime! The largest is a bit under 1 mm tall. R. incertus has a pointed crown, R. caseiri has no point.-
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- guitar fish
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From the album: Post Oak Creek
This is a septarian concretion from POC. It's about the size of a good strawberry. Collected 9/28/19.- 2 comments
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- post oak creek
- septarian nodule
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From the album: Post Oak Creek
I'm pretty sure these are S. raphiodon teeth. They are much smaller than S. texanus with a narrow main cusp and finer striations than S. texanus. Compare: http://oceansofkansas.com/sharks/Kansas/shscap3.jpg-
- eagle ford
- eagle ford formation
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From the album: Post Oak Creek
I'm fairly certain this is a posterior Cretodus - a shark known for producing Texas-sized teeth! At just 1 mm tall, this may be the smallest Cretodus tooth possible.-
- cretodus
- cretodus posterior
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From the album: Post Oak Creek
The famous "ginsu shark" is a rarer species that can be found here. This is a lateral position; a tooth farther back in the mouth. I've only found a handful and none are complete.-
- eagle ford
- eagle ford formation
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From the album: Post Oak Creek
Symphyseal teeth are found in the midline of the shark's jaw. They are usually small and squashed-looking. Since only a few rows produce these teeth, they are much rarer than other positions.-
- eagle ford
- eagle ford formation
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From the album: Post Oak Creek
The fossils in the creek can have varying levels of preservation: from the pristine glassy enamel seen at the top, to more river-worn seen below.-
- eagle ford
- eagle ford formation
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From the album: Post Oak Creek
These oysters are common in the creek, and support the Turonian age of the fossils.-
- cameleolopha
- cameleolopha bellaplicata
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From the album: Post Oak Creek
These oysters are common in the creek, and support the Turonian age of the fossils.-
- cameleolopha
- cameleolopha bellaplicata
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From the album: Post Oak Creek
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- eagle ford
- eagle ford formation
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Sherman, Texas, turning Post Oak Creek into fossil park
Oxytropidoceras posted a topic in Fossil News
Sherman turning Post Oak Creek into fossil park By Lauren Rangel, KXII Channel 22, July 8, 2022 Yours, Paul H.- 1 reply
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Hello! I have yet again grouped up some more fossils that I found in Post Oak Creek that I found interesting and would like to be ID'd. Thank you for the help! (1) very nice tooth (2) shark or other fish? (3) one if my biggest teeth (4) I think this is a Fossil? I was thinking enamel or ray but I'm not sure (5) I'm pretty sure this is a Fossil, but I could not get any good pictures of it up close unfortunately (I could try to get better ones later)
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