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Showing results for tags 'tarrant formation'.
Found 12 results
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I have sometimes asked for ID assistance on what turned out to be rocks, so my expectations are tempered, but this looks super similar to dino bones I’ve worked on while volunteering at a local university. I took pictures of all sides. It has a sort of a palmwood look on one side but there are some curves and a point that remind me of a bone. I’ve never found anything like it. It broke into 2 pieces despite my gentle handling as I pulled it out of the bank along the Trinity River not far from DFW airport in Irving Texas, where the woodbine and Eagleford meet. I hope I have something cool (non-mollusk) for once. Haha! Not far from this, I found some neat pyrite nodules that I haven’t seen before.
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- fossil id
- is it a bone
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One of my smaller slabs from a construction site in the Tarrant formation had a few interesting little fossils embedded that I can’t identify without trying to extract them. Any ideas? Or not a fossil? The Tarrant formation, south Tarrant County TX.
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I found this interesting piece of pet wood some time ago in the Tarrant formation, it had eroded into a creek. Notice the ship worm holes. I was surprised it had a small part of the secondary branch still connected. Tarrant county, TX
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- eagleford group
- pet wood
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I’m still stuck on my “deep dive” in the Tarrant formation lately, adding a few more small ammonites, some pet wood and some nice plates of turritella. Tarrant County TX
- 6 replies
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- ammonites
- conlinoceras
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I found my first Tarrant formation clam, protocardia Texana, looking forward to cleaning it up more. Interesting shape. I also find conlinoceras tarrantense ammonites every time at this spot, and I even found a new species for me, paraconlinoceras barcusi. Thanks to my friend Mercer for identifying the difference as he prepped a couple of them! This spot is barely into Dallas County. The ammonites have been eroding out of the Tarrant formation under a bunch of roots, I need to bring some clippers and a small shovel next time, just to generously tidy up the landscape a little, of course. The tiny one was in a small golf ball sized concretion I cracked open.
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- clam
- conlinoceras
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I have had great luck finding fossils in creeks and wild places, but this afternoon was my first construction site success (other than Grayson nautiloids and a few shoe clams), and the first success I’ve had in northern Johnson county at a Mansfield construction site. I barely lifted this into my trunk and the car immediately lowered by a few inches. lol! I like creeks because erosion isn’t only visible for a few days until a big slab covers the entire ground, but it sure is easier to find ammonites by the curb..when they’re right there! If only I could have a cell phone alert for active tractors in the Tarrant Formation..
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- ammonites
- concretion
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I found a tarrant formation exposure along the trinity river, a scenic little spot that I was happy to find. In addition to my seemingly usual haul of conlinoceras ammonites (on the smaller side this time), I found a couple of neat little gastropods, gyrodes petrosa. One of them has had its shell replaced with calcite, making for a really shiny/reflective appearance. I also found a piece of petrified wood with sand still stuck to one side. I’m always amazed that we can find these ancient artifacts and we even know which side was touching the ground as it was fossilized for so long (if I’m interpreting the condition correctly). One pic shows an ammonite exactly as I found it, shouting to me “please adopt me and take me home to a warm bed!” Dallas county, this weekend.
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- conlinoceras tarrantense
- dallas county
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I had my best hunt of the year Saturday, it was incredible. I guess you could say I was…petrified. Sadly, my phone died after getting stuck in a reboot loop (thanks iPhone 10) so it’s now extinct. Oh and I finally found a dinosaur! It’s on top of an ammonite. 🤣 25 complete ammonites a few partials! I also found a 21-inch long chunk of pet wood and a colorful smaller chunk. I then found 11 ammonites today to start the new year right. My back is still sore and feet tingling after treading through creeks where shallower areas were actually frozen..lol! Tarrant and Dallas County locations. 2 were in partially exposed concretions. One of those is placenticeras or engonoceras? sorry about the blurry pic, I’m using another old phone I have that has a camera that only works when it’s on 2x, so I’m having to adjust to taking pics with it.
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- 14
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- ammonites
- calycoceras
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Conlinoceras gold mine-new spot in DALLAS county
Shaun-DFW Fossils posted a topic in Fossil Hunting Trips
I located a potential spot (a creek tributary) that I never gave a chance literally a few feet away from a spot I’ve hunted before. I stopped by after a work meeting today and I was NOT disappointed (I know, I have fossil fever, no known cure). 9 conlinoceras tarrantense ammonites! One is about 6.6” across and in great shape. I assumed most in this area washed downstream from another location, but I found exposed formation with 1-2 smaller ammonites a few feet up the bank and 2 that were firmly fixed in matrix on the creek bottom, so I have an original source spot to add to my secret shopping list. I now have 13 of these in a week.. Dallas county TX (all of my prior finds were Tarrant county)- 19 replies
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- ammonites
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I have 3-4 spots (duck creek, Grayson, Fort Worth formations) I haven’t yet revisited since it rained that are really close to my house. I’ve been to the same conlinoceras spot 3x and this was my last visit until we get heavy rain/erosion again. It didn’t disappoint! Funny how I can walk by the same spot 3x and find things I missed. Haha! I’ve seen ammonites missing chambers before, but this little one seems to have indentations that might have been there originally, like from bite marks or something. What do you think? Just my child-like imagination? the nice looking white calcite specimen missing part of itself is from another larger creek that my primary spot feeds into more upstream. Tarrant County TX.
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I found this in a creek in Tarrant county along the woodbine/eagleford border. Lots of sandstone present in the area, and some concretions. Thanks in advance for the ID assistance!
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Tarrant Formation Concretions, Middle Cenomanian, North Texas
Heteromorph posted a topic in Fossil Hunting Trips
In November 2018 I found a site in the Middle Cenomanian Tarrant Formation. Parts of the site were in the Lewisville member of the Woodbine. In the Lewisville I only found a few common bivalves, but the Tarrant produced multiple large concretions packed with ammonites, plant material, fish bones, and some unknowns. Some of the largest concretions were about 2 meters by 2 meters by 2/3 meter thick. But of course sizes and shapes varied. The concretions were a bit crunchy on their weathered exteriors, but in their blue interior they were harder than concrete. Lots of weathered ammonites covering the concretions, but when broken open the concretions' blue showed how well the ammonites inside were preserved. Their shells had been replaced with (I think?) calcite, so they were nicely shiny. Most of the ammonites seemed to be Acanthoceras amphibolum and Tarrantoceras sp. On March 1, 2020 I got a trailer and bobcat to, with the landowner's permission, haul a few giant concretions home. I did, and they are sitting in my barn. It would take years of preparation for one person, but there are probably some cool things in them. I hauled off around 2 tonnes of concretions, at least. Here are some pictures, spanning November 2018 to March 1, 2020. November 2018. FIG. 1-2: Concretion size. FIG. 3: Fossil wood. FIG. 4-7: Fossil hash. FIG. 8: Dog for scale. May 2019. FIG. 9: More hash. FIG. 10: Too much to carry... May/June 2019: Close-ups at home. FIG. 11-13: Same rock with close-up on wood with boreholes. FIG. 14: Ammonites and fish-bits hash. FIG. 15-16: Two different rocks. FIG. 17: Plant material. March 1, 2020. FIG. 18: The haul home.
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- acanthoceras amphibolum
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