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  1. Paleo_Adventure

    ID Assistance Please

    Hello, I purchased two of these years ago. I was told it was coprolite. Since then, I have learned allot and have doubts this is actually coprolite. So, what is it? As seen in the pictures, they look like a ball was shoved into a large tight donut hole. For reference, the tile is 12 in square. Both are very symmetrical. It appears to have rust color but no other indication this is an iron concretion. The outer "shell" to me looks like it cracked under pressure, but the center ball did not. Although curious to the possibility of having contents, I do not want to do a destructive investigation. Your input is very much appreciated. I share my finds and information with teachers and students. So, I want to be as accurate as possible. Thank you, Paleo Adventure
  2. Hello and thank you for looking. I found this rock in a dry river bed in Nayarit state, Mexico, near an ancient petroglyph site next to the river. I always thought it looked like a little frog, but have not been able to figure out what it might be. I really appreciate your help. It's heavier than the common volcanic lava rock from the area.
  3. James Sable

    Is it coprolite?

    Thank you in advance for your feedback! This “rock” was found in Calaveras County California in a creek bed near an area of the Mokelumne River watershed. An exposed deposit of fossils was found a few years back in this area of the county. We have lots of exposed shale formations in the area. The pictures all show the “rock” trying tell me it’s a coprolite on the left, next to a coprolite from unknown origin I purchased in a rock shop on the right. The other pictures are the surface of the “rock” I would like to know more about. The last few pictures are after it’s wet. It weighs 4lbs and is about 8” diameter x 4” thick.
  4. I found this in orange county, Hudson valley NY. The specimen is approximately 6 inches in diameter. It has little tunnel like holes in it and this ridged fossil. Could this be a coprolite? Is the fossil a wing, or could it be plant material? Thank you for your help!
  5. brandon tibbetts

    Coprolite

    Wanting to see if this is a Coprolite thank you. It is about two inches long and found in Arizona
  6. Approx. 90mm dia x 15mm thick Long time lurker. First time poster. Thanks for having me! Hoping for info on this specimen. I have spent about 10 hours over the last 6 months trying to positively ID and I am stumped. I found this specimen and accompanying materials after a one hour 4Lo rock crawl followed by a grueling two hour uphill hike near Horseshoe Lake, Maricopa County, Arizona. Thank goodness for traction boards or I would have been walking back to the main road! I was out for chert, chalcedony, and other fossil material when I came across this laying right on the surface. Stupidly, I should have grabbed a picture right then. In my excitement, I failed to. From the description of the surrounding area (copied below) I believe it to be some form of a Stromatolite. However, the other photos I found online don’t seem to match up very well. For one, this thing is pure black something. I cannot find an example of one this color. Also, this specimen has a “slice” that runs from approx. its center to almost its outer edge and is through the piece (visible in photo). Which makes it look much more organic in form than other Stromatolites I see. Other ones appear very “geologic” looking to me. My rockhound partners who are not deeply knowledgeable in fossils have said it reminds them of a mushroom or some type of sea anemone. That’s the type of organic matter form that it resembles anyway. As a long time hound myself, I am struggling to determine the composition. It’s not like coal and doesn’t resemble any material I have previously seen or collected. It’s really best described as “graphite like”. The smaller pieces pictured have also given me few clues. They leave a brownish black streak on white paper. I cracked a small piece of the end of one and in the sun the material really sparkles like glitter and is a bit sandpaper-ish. On the outer surface the material is smooth feeling otherwise. Other guesses are some type of larger Tufa or a Coprolite of some sort (but what sort). I am definitely all ears and thank you in advance for taking your time to look. Info on the surrounding areas and why I believe it may be some type of Stromatolite: "That's not snow! This is Chalk Mountain adjacent to the Horseshoe Reservoir on the Verde River. According to Wrucke and Conway (1987, USGS OFR- ), Chalk Mountain consists of white to light-gray, finely laminated limestone. Chert also occurs but is minor. Small centimeter-scale stromatolite-like mounds suggest an origin as algal mats growing on a paleo-lake bed. The authors suggest the deposit may be correlative with the Plio-Miocene Verde Formation." For the report and map: LINK
  7. brandon tibbetts

    Coprolite

    Wanted to share this coprolite with everyone!!!
  8. Anybody ever seen anything like this? Due to the site it's from could be anything from Cretaceous - Pleistocene. The site is well known for paleocene croc coprolites so my first thought was these were footprints of something in a croc coprolite, but that doesn't quite make sense. Maybe it's a burrow of something in phosphate? Maybe it's an indention of something? Any ideas?
  9. Hello everyone Below are some finds from my last trip to a dredge spoil island that has Miocene to modern marine and terrestrial fossils. The dredge and river action unfortunately beat up the fossils and make it hard to ID. The scale on the white graph paper is 1" for the boxes. Photo quality a little off due to the poor winter sun angle. Large Un-numbered Bone: Possibly a mammoth or bison femur? Weighs more than 3.5 pounds. It looks like the head of a femur and a heavily worn limb bone. May be too far gone to ID. #1: Two small mammal (likely cetacean) periotics #2: Edge of a Turtle shell? Just didn't see the typical interior turtle shell texture #3 Broken coprolites? Interesting interior compositions on them #4 Worn turtle nuchal shell? #5 Wild guess-fish tooth in jaw? Has a smooth enamel on the pointy end that tapers on both sides to a broken point #6 No idea-Probably unidentifiable? #7 Small broken horse scapula? Thanks for looking. Hopefully the photos stay in order, with an outdoors photo followed by another photo indoors due to the outdoor light this time of year. Be happy to add better photos if requested.
  10. This is an opal from Lightning Ridge. Bought it as fossil wood. However, IMO it does not look as wood. To me it looks more as a Coprolite. Here is a video. It is 5 minutes long to show the specimen from different angles dry and wet, and there are some microscopic images by the end. What do you think? Thanks! https://youtu.be/j1b1RdRmZmU
  11. bockryan

    Coprolite

    From the album: Fossil Collection: DC Area and Beyond

    Coprolite Mazon Creek, IL (Mazon Creek Private Property) Francis Creek Shale Carboniferous (Middle Pennsylvanian)
  12. slowescargot

    concretion or coprolite?

    Can you help me identify this? Found on the shore of Bras Dor Lake in Nova Scotia. Whole specimen is about 9 inches across.
  13. I was pleased to be the winning bidder on this unprepped Knightia in a rolling auction by @Meganeura this past August. Thank you, Daniel. it was quite generous of you to offer it, along with all your other fine items. I was in no hurry to complete the prep and greatly enjoyed spending an hour with it now and then, or even a quarter- hour as it sat patiently on my kitchen table. While I envy our members with air-abrasion setups, I do appreciate the quiet convenience of pecking away at the Green River matrix whenever the spirit moves me. I began work on the skull soon after I opened the auction package from Daniel and soon found a lovely coprolite has been sitting on the fish's head for the past fifty million years or so. I'm afraid I found it rather amusing, and while the poor animal might find my attitude besmirching to its honor and an added insult to its injury, I decided to leave the attachment right where I found it. Not surprisingly, I found more fossil fish dung as I progresssed, and I've left them as found as well. I did uncover a small mass of fish bones near the top of the rectangular block, sliced by the trimming saw and mostly unrecognizable by me. I'm tempted to keep digging away at the block to see what else might be hiding there, but I'll probably just leave it as it is and move on to another awaiting project. It's not one of my best prep jobs but I'm satisfied with it and appreciate it as a snapshot of a moment in time.
  14. Daniel1990

    Muschelkalk coprolite?

    Hi It is coprolite? Found: Muschelkalk,Poland,Trias Thank you and best wishes
  15. Gaitano

    Is this a coprolite?

    Can anyone ID this please, I'm thinking a coprolite but not sure. I found it in the Redcar area Yorkshire along the coast line. Thanks.
  16. patelinho7

    Coprolite?

    Hi everyone, I visited one of my old MD early cretaceous footprint sites (where I found my old footprint for those who remember) just to have a look around and I found something that immediately stuck out due to its poopy appearance. I'm going to use the pinned coprolite ID guide to give some basic info before the photo dump (no pun intended). Location: - it was found in a creek around College Park, MD, an area known for Early Cretaceous ichnofossils, specifically dinosaur tracks - Formation: Patuxent Formation (Potomac Group) Shape: - It is not the most obvious poop-shaped rock, but its lack of sharp-terminating edges and lack of sedimentary layering cannot be ignored - Has a lot of interesting features that indicate it being an ichnofossil (impressions of various structures like wood), this could mean it is a coprolite, or it also could just be a freak rock that is preserving other activity Texture: - it is not granular, it's the typical ironstone/siderite found in the Potomac Group except instead of the flat, somewhat-layered ironstones typical of the Patuxent Fm - has a lot of cross hatching akin to mudcracks Inclusions: - No visible vertebrate inclusions - a couple small surface mineral inclusions (one tiny grain of what looks like quartz, one shard of what looks like chert) - interesting note: a small layer of lignite seems to be pressed into certain areas, it is the dark-brown/black flaky stuff on certain areas. This confirms it is most probably a fossil of some sort? It has the impression of the wood still on the rock behind the flakes of lignite. Could this be non-digested material? Did plant material get pressed into the excrement? Or is it a fluke bit of mud that fossilized with the wood attached? Composition: - I initially thought it could be a herbivore coprolite because I didn't see any obvious sphincter marks but *IF* it is indeed a coprolite it is way more well-defined than pictures of herbivore coprolites I've looked at - Lick test? Yeah no . I found this in a creek next to a major road in an area that definitely has runoff pollution. I am not licking that rock, haha. Thanks for taking a look! Photos: Other side with lignite presence: Both ends (cross section?):
  17. Hello! I was hoping someone could help with identifying this fossil. It was found at an abandoned rental property in Copperas Cove, Texas about 15 years ago. I do not know where it was originally found. I hope these pictures are adequate. Thanks for any help!
  18. Hi again. My ever dwindling fossil collection, will hopefully survive this ID session. I found most of these in April 23 amongst cliff fall rocks on the beach in Charmouth UK. I found the large grey blobbly one on the right in September same place. There is one that looks like a perfect acorn and some similar. The large browner looking one seems to be made up of nutty nodes. I'm wondering if they are coprolites. I'm sure they were greyer when I found them. Should I coat these with B-72, should I leave them be or am I imagining fossils that are just funny shaped rocks? Thanks, Jes.
  19. From the album: Middle eocene fossils from Qatar

    The only one of its kind I have in my collection. This one is around 1.5 cm in length Qatar, Midra shale formation, Middle eocene
  20. deltav2

    Coprolite

    From the album: Middle eocene fossils from Qatar

    Good specimen, about 2 cm in length Qatar, midra shale formation, Middle eocene
  21. Hello all....new to the forum. I have been roaming beaches for years and picking up random objects. Always a fan of the unique and interesting. I was on Holden beach in North Carolina recently doing the normal shark tooth hunt. I came across something I'm not familiar with. At first I was hoping it was a tooth...someone said super croc..except it really wasn't cylindrical enough. Then I moved to maybe a dino tooth of some sort based on the top. Well I have searched all I can, and my best guess is I may have come across a nice piece of coprolite. Thank you in advance for taking a look. I am amazed by all the knowledge here...
  22. val horn

    More Mazon Creek Unknowns

    I appreciate everyones help. I have been able to open a few more of the concretions I brought home. Several look to be clams maybe Mazonomya , One even has an internal mold? I would appreciate confirmation if that is what they are. One is very circular, I have no real idea, was thinking maybe coprolite because I can convince myself that the three shiny triangles at one edge could be fish scales-- but I am probably overreading what ever is actually there. I am even less sure if the last concretion actually has anything but a rough surface inside the concretion but wanted somebody else's opinion before I tossed it in the dud pile. Thank you for taking a look and offering your suggestions. Valerie
  23. finally1one

    Coprolite, Ferrunginous Concretion?

    Hi all, last week I found an interesting rock formation that appears to be cropolite. At least based on a few images I was able to compare it against online. The formation was found on an island beach off the west coast of Michigan. Thank you for any help identifying it!
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