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  • *Pseudofossils ( Inorganic objects , markings, or impressions that resemble fossils.)

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Found 25 results

  1. Geo-Reinier


    Hi all, I found this specimen from a rotary borehole (window sample) at 5.4mbgl within the upper Whitby Mudstone Formation. I’m leaning towards a shell eating fish, but still unsure from the shape of the rest of the the samples which looks more like a coral? The site location is Dundry, Bristol, England. Reported geology: Whitby Mudstone formation Palaeoenvironment: Shallow marine environment Reported age: 174 -183 million years old Any suggestions would be greatly appreciated! Regards Reinier
  2. mr fossil


    I found this rock in a area not logged in any geological map except one French map from 1963 which logged it as Cretaceous with a question mark. It is surrounded by Precambrian mountains and sedimentary rocks just randomly pop out so I thought I should investigate. Near Makkah Saudi Arabia. I found volcanic, Precambrian and sedimentary rocks there which confused me . Anyways I was wondering if this is a fossil and if it is the. What type
  3. CornelDumitru

    Petrified wood in metamorphic rock?

    Hello! Please help me find out if the arched bands showing up after polishing this metamorphic rock are just random artifacts of sedimentation or an indication for petrified wood? The material reacts to vinegar. I picked the stone in Romania, Harghita county. Thank you!
  4. Fossilizable


    Hello! Here are several photos of a fossilized colony of some sort of worm, or so it appears to me. Please excuse the remnants of clear nail polish I used years ago to increase contrast before I knew better. I came across this in Santa Paula canyon about 2 miles northwest of highway 150 where it turns west at Thomas Aquinas College, Santa Paula, CA. It had washed down decades ago from probably a Matilija Formation exposure. The matrix grain seems quite fine and the rock is very heavy. Although I've been up and down the creek countless times, I've never seen the source bed. Eocene oysters, clam
  5. Subject is a bit off topic, but while out exploring a local canyon for Ordovician fossils, I chanced upon this strange exfoliating section in a formation known as the Valmont. Would anyone happen to have knowledge on the processes behind this? The area was not conducive for finding fossils. This is 'as viewed' from the side. It is not taken from above. The bed is in a normal horizontal orientation but exposed in a staircase cleft. Sedimentary rock formation Found in the orange box in this photo
  6. BluesharkRay

    Rock and Roll

    Third one of these I've found lately. Very interesting.
  7. BluesharkRay

    Teeth? Bone?

    Teeth? Or am toothbrushing rocks? Sand continues to shed and seem to be shaping. Hunt County. Bazaar Sedimentary rock. Only one I've seen like it. Looks like sea coral . Hunt County. I would have completely discounted this because of how white it is except for how it was found and how it looks.
  8. sierrahotel117

    NW Wyoming ID

    Just moved 40 to the SE of Yellowstone National Park in NW Wyoming. We have been finding these in the excavation of the house. They are located in a greenish clay layer just above a rocky layer approximately 12 feet below the surface. They are sedimentary balls that, when broken open, have a smaller, more hard type of rock or maybe fossil inside. We find them in different sizes from 4-12 inches in diameter. Any help would be much appreciated. Edit - I believe they are rare double concretions.
  9. tjeis

    tubular trace fossils ID?

    New to geology, so excuse my paltry terminology. Description: Tubes, many branching, between 1-3cm in diameter, in places as thick as a forest root system, material very sandstone-y, surrounding material clay. from my research these seem like burrow casts of... worms? tetrapods? do burrow casts form in such abundance?
  10. MacHoffman22


    Found what seems to be a tooth in the Big Sioux River just inside the border of Iowa. Hoping to figure out what it's from. It appears to have a sedimentary formed abscess on it which leads me to believe it may be older. It's about half an inch tall and roughly just as wide
  11. I have recently added this piece to my collection. Was sold to me as a Sedimentary Stromatolite from Bolivia. No further info given. I have looked online and in my book and can't match it to anything. Is this a genuine Stromotolite? - it wasn't too expensive, and it's quite attractive either way. Photo of both sides. Roughly 11cm square
  12. WI-fossil-guy


    New member here. You all have been most helpful so far, thanks. These requested possible fossil ID were collected from a drained lake bottom in western Wisconsin (Vernon County). It is not soft like sandstone. There are two different items. The longer item (#1A-D)is shown on all four sides. The shorter item(2A&B) is shown just front and back.
  13. Abed H.

    Small ammonoid from Jordan

    I found this on the surface of the land next to my house. when you expose it to the sun, you can see crystals reflecting light
  14. Abed H.

    Egg Mold from Jordan

    hello, I found this egg mold close to my house, there were an excavation, i found it in the dirt they bulldozed away. (it wasn't broken when i first found it, it fell by mistake). from the other side it's just a normal orange-ish sedimentary stone(i don't have enough media MBs left). And, I see these orange lines in the bottom of the stone too often on other stones i want to know what they are. thank you.
  15. Bronzviking

    Florida Marine Fossil (Chiton)?

    I found this grayish sedimentary rock on the shore in Dunedin Florida, USA. It has a white grooved oval imprint on it like some critter fossilized on it. Could it be a Chiton? (Ruler is in inches) Thanks All.
  16. FreeRuin

    Asymmetrical Ripple Marks

    From the album: FreeRuin's Finds

    Marks left by the movement of a river or stream in the early Jurassic. Hartford Basin Portland Formation Massachusetts
  17. FreeRuin

    Mud Cracks Imprint

    From the album: FreeRuin's Finds

    Multiple cracks made from the drying of mud, probably near a seasonal body of water Hartford Basin Portland Formation Massachusetts
  18. FreeRuin

    Mud Crack Imprint

    From the album: FreeRuin's Finds

    A mud crack preserved in the shale, I determined it not to be an ichnofossil due to more that turned up in the rock. Hartford Basin Portland Formation Massachusetts
  19. Phil_shiffley

    Large fossil(s) ID. Port Angeles shale

    Hi there! First time poster, so I apologize if I'm lacking information. Also, my phone died on my way to the location, so I couldn't take pictures of the area I found them in. I tried to doodle a picture, but I'm no artist. Today I decided to check out a beach I had heard about near Port Angeles on the Olympic Peninsula of Washington State. . On this beach, there is a section of mudstone/sandstone about 60 feet tall and 100 feet long. At the base of the slope was a boulder(also sanstone/mudstone) about 6 feet tall and 4-5 feet around. It must've recently fallen because it was crum
  20. Jdeutsch

    geology question

    I was in an agate field in South Dakota just south of Badlands Park. Cretaceous era. I collected a few not-so-special agates and some jasper, and the pictured rock, which I thought was wind polished jasper- but it broke and had what looks to be brachiopods inside. I assume this is sedimentary or metamorphic. What is the relation between the agates in this region and the kind of specimen here? Why are there so many agate fields in this area of S Dak?
  21. MYOR

    Partial Thoracic Skeleton

    There is excavation for a housing development behind our home. On examination of some large excavated limestone boulders, I noticed what appeared to be a cross-section of thoracic (rib cage) of a skeleton. I suspect it is a fossil, being that there is a noticeable pattern within the same layer of sedimentary rock. I've attached a picture, please note the rust colored protrusions within the blue-gray limestone boulder. Thank you for any input on whether my suspicions are reasonable. If so, I intend to contact the construction company as to the location of where the boulder was excavated,
  22. Found these about 3 years ago in a pile of similiar looking fragments that were sitting atop sedimentary rocks. These appeared to have been broken out of one of the top layers. Sounds strange, wish I had pix of the site itself. I thought that they might be bone fragments, my girlfriend (who knows way more than I do) stated that these were likely rocks. The shapes and consistency made me think otherwise. Thanks for any advice.
  23. darrenrx

    Georgia Fossil - Dome shaped

    Hi Fossil Forum, I need help in identifying several fossils my friend found in middle Georgia. The area where he found them has been reported to have fossils from the Ordovician Period. They were found in a soft limestone sedimentary rock. The fossils may be in the sand dollar family, but don't appear to have a star shape on top. The dome is somewhat elongated and appears to have fine fibers running from the top of the dome to the bottom edge. Any idea what he found? Thanks, Darren
  24. LNQuaroni

    Rock, Fossil?

    Hi everyone, In another walk near a mountain river in Northern Italy, I found this "suspect" rock. It was very different from the others nearby, not sure it's a fossil though. What do you think? The rocks are dated 65 million years old. Thanks in advance! Luca
  25. LNQuaroni

    Small Trilobite?

    Hi everyone, I was hiking in search of fossils near Fonteno, Beramo in Northern Italy, just by Lake Iseo, when I found this object. Having recently been to the Museum of Natural History of Bergamo, I found out that near Fonteno it was plentiful of fossils, dating back to 400 million years ago, when Lombardy was at the bottom of a sea. The fossil (hope so) is 1 cm across, opaque black, and two of the three lobes seem clearly visible. I used my macro-lens to improve the quality of the details. I hope someone will help me identify it, Thank you all in advance, Luca
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