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

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Found 22 results

  1. A friend likes to pick up rocks and other assorted things at estate sales. Then he brings them to me for ID. But this one is not in my areas of expertise. It seems like I've seen these for sale at rock shops, not sure. And, I'm not certain it isn't some kind of nodule or pseudo-fossil. The matrix is sandstone, with rusty iron color when scratched with fingernail. Also, because it was purchased, its natural location is unknown. il.
  2. Jcnw

    Pseudo fossil or egg?

    Hi all, see pictures below, i’m jn doubt if this is an egg or just geological. found in The Netherlands Holland, in mining area. thank you
  3. SarahtheIchthyornis

    A worm or worm burrow in New Jersey?

    Hi everyone! I recently found this strange curled relief on a rock in Monmouth County NJ, due to the prevalence of burrows at this site, my guess is that this curl could be a worm (unlikely due to the whole soft tissue thing) or a worm burrow, or perhaps one of the tricks bog iron likes to play. Anyone got any ideas?
  4. Mahnmut

    Geological?

    Hello together, Something I quite often see in the ID-section are pseudofossils commented as "geological/rock". I dont want to be nitpicking, probably it´s just short for "purely geological". Simply "geological" doesn´t seem opposed to fossil, in my understanding fossils do happen at the interesection between geology and biology. So "no biologic structure"=no fossil (except chemical fossils) , but "geological" seems to apply to all the specimens (if they are not molten plastic, recent bone, or something else entirely. ) English is not my native tongue as you may have notice
  5. I found a drainage ravine with thousands of these these in them. I'm almost certain they're an iron concretion of some type but I've gotten several different identifications. I took a few of them to the MAPS expo last spring for an ID. One person said michelinoceras, but then an expert on cephalopods said no, definitely not, but he had also never seen anything like them. These were found on the north side of Dubuque, IA right at the top of the lower Galena dolomite just above the upper chert beds. They are in a thick sticky grey clay which sits just above a thick iron rich encr
  6. Sylvana Jadir

    Is this a fossil?

    Hi folks, I found this on Killiney Beach in Dublin, Ireland. I usually find fossiliferous limestone there full of crinoids and corals and other fragments. This caught my eye but I have no idea what it is. Any thoughts anyone? Sorry for the use of a 1 pence coin as a scale here, I just saw that using coins is not ideal but I am back in Ireland and the piece is at my home in London where I took the photos. Sylvana
  7. Alex Gu

    Is it fossil or just a rock?

    Yesterday I bought a fossil box from the local natural history museum, just for the sea urchin inside. And there is a mysterious thing inside that looks like fossil but I've never seen something like this. Maybe it's just a weird looking rock?
  8. For those interested in Ediacaran fossils, you may have seen a lot of supposed medusoids coming out of sandstones/quartzites in Namibia. They are usually labeled as unidentified medusoids, but sometimes as the enigmatic genus Namacalathus to command a higher price. At first glance, some specimens do bear resemblance to a top-down cross section of Namacalathus (such as the specimen below), however note that Namacalathus are preserved as calcite skeletons, not as molds in sandstone. A thread discussing these was posted several years ago, without a definitive conclusion.
  9. lovec

    Fossil or pseudofossil ?

    Hallo forum, this was in the craggy field where the sea was once decomposing on the limestone subsoil. It reminds me of Hibolites hastatus. What is your opinion ?
  10. Hi, I'm new here. My husband and I bought a house in the Mojave desert last spring and have found many rock treasures there over the summer. The area we're in used to have volcanic activity in addition to ocean streams. We've found huge bones, tons of petrified wood, some oddly shaped rocks, points & frequently find seashells. Initially I thought this rock might be some old Paleoindian art. It looks a lot like a tortoise except I don't believe they've had teeth for millions of years. I found some photos of old tortoises which have a strange small white row of something bony alo
  11. Hi! I’m a newbie in every sense of the word. Zero background with fossils but interest in rocks. Two days ago, while hiking Heil Ranch in Boulder, a turqouise blue glimmer caught my eye so I picked it up. When I got home I took these photos. It looks like a small egg shaped rock with a little lizard shape in it. There is even a little ridge that looks like a spine. My son says it’s just a rock, and I’m sure he’s correct, but thought I’d get confirmation from the experts. Thanks in advance for your time, and for humouring me with my silly request.
  12. ranger_kate

    Probably not an egg

    A gentleman asked for help identifying this and told me he found it near Mt. Pleasant, TX. Based off images on the internet he thought it might be a fossilized egg. He was NOT willing to break it open. I forgot to include something in the photo for scale, but it's about 5" across the long side. He's asked me to call him when I find out more information. My first thought was a geode. Members of the Dallas Paleontological Society's Facebook group said an iron or limonite concretion. What features differentiate this from a fossilized egg?
  13. Greetings! This washed up on the shores of Myrtle Beach in SC a few years ago, and I picked it up and brought it home due to its odd shape and the possibility that it may be a fossil. It kind of looks like coprolite, but then again, it may just be a pseudofossil (or maybe a different type of fossil). Anyone have an idea of what it may be?
  14. Limonite is a type of iron-rich mineral found in igneous formations. It was once used as a source of iron ore and in Delaware was mined for the purpose for two centuries. Limonite tends to form with vugs of easily-weathered minerals, including druse quartz, which leave behind gaping holes and slots. It is easy to picture skulls and other bones in these rocks, whether freshly fractured or stream-worn. This one always reminded me of a dragon skull.
  15. These are a few of the pdf files (and a few Microsoft Word documents) that I've accumulated in my web browsing. MOST of these are hyperlinked to their source. If you want one that is not hyperlinked or if the link isn't working, e-mail me at joegallo1954@gmail.com and I'll be happy to send it to you. Please note that this list will be updated continuously as I find more available resources. All of these files are freely available on the Internet so there should be no copyright issues. Articles with author names in RED are new additions since July 6, 2017.
  16. archeologue

    Fossilized Bone?

    I'm a newbie to the forum but am used to finding fossils in matrix, never like this, so help is very appreciated! I found this on Double Bluff Beach (Whidbey Island, WA), and though it looks like it could be an igneous rock (like pumice) it is heavier than most volcanic rocks would be. To me, it looks a lot like the (not fossilized) bones I have found, but it is too heavy to be a bone from recent times, which is why I was thinking it could be a fossilized bone (or maybe even wood)? Please take a look at the photos and tell me what you think, thank you in advance!
  17. I found these rocks in the Oregon Coast Range (central to north) many years ago and have always wondered whether the interesting image was a pseudofossil or an actual fossil. If it's a pseudofossil, any ideas on how it would form? If it's a fossil, what on earth is it? The image measures about 37 mm at its widest point. I'm afraid that's all I know about it; the plane of view is unknown, although the right side could be tapering down to a stem/pedicel of some sort (or not). Web searches have proven futile. (Although probably wouldn't have if I knew what it was!) Thanks for any insi
  18. DevonianDigger

    ID needed

    A colleague of mine approached me today and loaned me what he believes is a fossil that he found in the Chestnut Ridge Park area in Western New York. I didn't have the heart to tell him on the spot that it simply was not 'dinosaur meat' as he was told by someone else. So I figured I would at least try to get a definition of the structures so that I could provide something more satisfactory than 'sorry, it's a rock.' (He was really excited about his dino meat.) I personally think it is just a plate of shallow sediment that was suddenly inundated by a heavier layer of sediment. Alas, I am far fr
  19. Cari Anne

    Cone-In-cone concretion?

    Hi again! Here are the other two items I found (NW PA, along coast of Lake Erie) that I mentioned in my previous post: Item #1: Approx 2" x 2.5" I did some research and I think this is an example of cone-in-cone concretion maybe? Item #2: Approx 9" x 5", I liked this because it had two things going on. I think the one section is cone-in-cone concretion, not sure about the other section? Thank you for taking a look at my samples! Cari
  20. Cari Anne

    Two spongy-looking rocks

    Hi! I found a few things while kayaking along the coast the other day (Pennsylvania, on Lake Erie). They look spongy to me so I thought maybe they could be a fossil of some kind? Item #1: Approx. 2" x 3" Item #2: Approx. 3" x 4" I have two other items to post but I can't fit them here, I will put in another post Thanks! ~ Cari
  21. Midwest

    Skin, Scute, Rock, Or Neither?

    About a month or so ago I found something on the side of the road by my house. I am somewhat familliar with the indigenous rocks in the area, however, I am not an expert. This "thing" that I found has layers of some sort, and in places looks like the shed skin of my leopard gecko (it's not), sandwiched between other bumpy layers. The crispy, skin like stuff seems to flake off and folds over in some places. In another area, there seems to be even rows of "pores" that are aligned perfectly. The pictures don't really do it much justice though. I wish they were better. I know that "on the road
  22. painshill

    Igneous Fossil?

    Igneous fossils? Yes… I know! Bear with me here. Welcome anyone’s views on this item. It belongs to a friend of mine and she’s in the States, so I haven’t been able to personally examine it (I’m in the UK). She thought might be a trilobite. Apart from the odd shape, I see heat shrinkage cracks, black glassy or crystalline material in the cracks and the typical colours of basalt weathering. So, my initial reaction was that its basaltic lava… probably pillow lava from rapid cooling as a result of molten rock meeting water. Igneous tells me it can't be a fossil so it has to be jus
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