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Help me ID some POC bones! (Reptile or Mammal?) + Bonuses
AmmoniteDelight posted a topic in Fossil ID
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 -
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 oyste
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As it looks like I won't be able to make it back out to Charleston for quite a while, I was wondering what the fossil hunting scene looks like here in Texas. I've heard that there's some miocene material to be had around Galveston and Bolivar, and I've heard about the Eagle Ford Formation and Post Oak Creek, but I haven't come across a whole lot of information. I do know there are some invertebrate fossils along the Brazos, but I'm not super big on snails. I'm in the Houston area, so a day trip down to the coast is definitely feasible, but I need to do some more research before I commit to mak
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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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From the album: Post Oak Creek
Small "bamboo" shark teeth, about 1 mm tall. -
From the album: Post Oak Creek
Tiny sawskate oral teeth - less than 1 mm in size. -
From the album: Post Oak Creek
Left: Lissodus sp.; right: Onchopristis sp. These are so rare, don't even bother looking for them. Lissodus is a Hybodontiform shark more commonly found in freshwater ecosystems (guess it also tolerated salt water). Onchopristis is a sawskate, but a rarer genus at this locality than Ptychotrygon. -
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). -
From the album: Post Oak Creek
A small "bamboo" shark, just 1 mm tall. -
From the album: Post Oak Creek
Various denticles from sharks and rays sitting on the face of a dime. -
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. -
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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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 -
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. -
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. -
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. -
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. -
From the album: Post Oak Creek
These oysters are common in the creek, and support the Turonian age of the fossils. -
From the album: Post Oak Creek
These oysters are common in the creek, and support the Turonian age of the fossils. -
From the album: Post Oak Creek
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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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Hello! I went out to Post Oak Creek in Sherman, Texas, this April and I found my first batch of shark teeth ever, about 46 teeth! I got some pictures of the six main ones I found interesting and that I would like y'all to ID for me. Thanks! (1/2) (3) cutie (4) Shark or Mosasaur? (5) These three goobers (6) Biggest boy I've ever found!
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From the album: Sharks
An odd shark from the Cretaceous of North Texas - these sharks had crushing teeth suited for hard-bodied prey. -
From the album: Post Oak Creek
The "big guy" to find at POC. Though, this one is smaller, the preservation is as good as it gets for this location. In fact, it makes me believe that POC could draw from layers adjacent to the Eagle Ford Group. I've found matrix pieces that are consistent with the geology of EFG, but need to find matrix pieces with this kind of preservation to confirm Atco or something else. I'm also not sure that this is C. crassidens anymore since this smaller, narrower form differs so much from the holotype. I currently believe it's an undescribed species since I haven't found something that ma
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