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Found 16 results

  1. Trace Fossil sites

    Hey everyone I recently heard about a paper on the definition of "Lagerstätte" (see attached); and it did raise an interesting question - "Can a trace fossil site be called a Lagerstätte?" What do you guys think about this? -Christian On_the_definition_of_Lagerstatte.pdf
  2. Eocene Green River Formation ichnofossils

    I would like some help identifying some trace fossils. These are all from the same site from the "Soldier Summit Fossil Track Horizon" area in the Eocene Green River Formation. My grandson and I collected these for his science fair project, so any insight is welcome. Fossil A is obviously a tail feather. It's length is 55mm. Fossil B has shore-bird tracks, but please notice the insect track in the right side. What kind of insect could have made this? Fossil C and D are different sides of the same rock. For side C, I initially thought that this might be bird tracks, but I they don't look anything like the classic pattern in the sample B. Fossil D is covered with fine lines, perhaps some worm tracks? Close-ups E and F zoom in on these tracks. Close-up E shows a mottled pattern on the left, perhaps an alge mat? On the left, a wavy track. I don't know how a worm could create this pattern. Close-up F shows fine lines.
  3. Talpina?

    Flint from southern Poland. Parking lot gravel, age unknown. Would you say it's Talpina?
  4. Toronto creek and river finds

    Hello there! I'm still in the process of deciding which fossils to put in my new display cabinets, so I'm looking for some identification help, if possible. All of the items pictured were found in the Toronto area (Georgian Bay Formation, Upper Ordovician) along creeks or rivers - please help me identify them if you can! Thanks in advance! Monica Picture #1: A trace fossil, but of what? Someone suggested trilobite tracks, but I don't know - what do you think? Perhaps @piranha can have a look... Picture #2: This may or may not be a trace fossil - I only just noticed it today. It vaguely resembles trilobite tracks to me (cruziana), but I'm definitely not sure...
  5. New depth limit for deep-sea marine burrows University of Leeds, January 10, 2018 https://www.sciencedaily.com/releases/2018/01/180110080549.htm “Scientists have found fossil evidence of deep-sea marine life burrowing up to eight meters below the seabed -- four times the previously observed depth for modern deep-sea life.” Ancient outcrops give new depth limit for deep-sea burrows http://www.leeds.ac.uk/news/article/4165/ancient_outcrops_give_new_depth_limit_for_deep-sea_burrows The paper is: S. L. Cobain, D. M. Hodgson, J. Peakall, P. B. Wignall, M. R. D. Cobain. A new macrofaunal limit in the deep biosphere revealed by extreme burrow depths in ancient sediments. Scientific Reports, 2018; 8 (1) DOI: 10.1038/s41598-017-18481-w https://www.nature.com/articles/s41598-017-18481-w Yours, Paul H.
  6. Date my sherds from ichnofossils?

    I thought I was joining my husband in his kingdom of Pareidolia when I thought there were mold or trace fossils, which I now know as ichnofossils, on some of my sherds from time to time. I have no idea how long it takes for such fossils to form, and I often don't have a guess as to how old a sherd might be or how long it could have been in the ground or water, but I am changing my mind. I see fossils on my sherds and I'm not crazy (well....)! I hope these examples are photographed well enough for you to see them, too. I'm very curious if this is common and if I can date the sherds according to the fossils.
  7. Ordovician ichnofossils

    More ichnofossils, this time from the Ordovician of the Georgian Bay Fm (Lower member) in Toronto ON. @JUAN EMMANUEL sent them to me. In particular we got wondering about the little bumps all over the 2 pieces in the first pic, and the large 'mound' (or infilled hole) in the last pics. Anyone have any IDs for these or suggestions as to the nature of their formation? Here is the 'mound', with 3 side views.
  8. A not so lazy sloth...

    Hi all, Came across this, and thought it might interest a few of you: http://interestingengineering.com/these-impressive-tunnels-were-dug-by-ancient-giant-sloths/ Those ground sloths are really my favorite, they're gigantic but still have a cute/gentle look. And they're architectural masters too. Max
  9. Trace Fossils?

    Gettings, I was recently visiting the north coast of the Balearic Island of Menorca and what I found there was a moon like landscape formed apparently between the Cambrian and the Devonian period, the area of the island is called Favaritx in case someone feels interested and I saw this strange drawings at some rocks, which I suspect that may be ichnofossils or trace fossils from echinoids or molluscs... What do you think? Thank you very much.
  10. Theropod Footprints

    From the album Jurassic fossils from the Newark Supergroup

    Theropod Footprints- The top two digits are from one individual. The bottom digit was buried by another facing in the opposite direction. Jurassic Period East Berlin Formation Newark Supergroup Middlefield, Connecticut A gift from Tim (fossildude19). Thanks again, Tim.
  11. Dear FF colleagues: Fossil News has received an interesting book about the trace fossils of the Blackberry Hill area in central Wisconsin, and we'd like to send it out for review for an upcoming issue of the magazine. If you've got some experience reviewing and have at least some experitise in this topic, I'd be glad to hear from you: fossilnews@fourcatspress.com. Many thanks! Wendell
  12. Recently bought a couple of Grallator dinosaur footprints. A Podokesaurus South Hadley, MA in the Connecticut River Valley. and one from La Grand-Combe, the Mont Lozère, France. Curious to see what others have.
  13. Found these trace fossils and possible pseudo fossils at an exposure of the Pioche Shale, Early Cambrian, just outside Las Vegas, Nevada on 6/29/14. A little help with the IDs would be greatly appreciated. Thank you.
  14. Resting Trace Fossils

    Visited the local rock cut recently and found these Carboniferous Period ichnofossils. 2 are Arborichnus Repetita and the other (pos/neg plate), I have no idea? Found several like this and haven't got an exact identification of them? Both Arborichnus Repetita measures about 1/4" to 1" in width and the claw marks are about 3" in diameter. Any ideas what this could be would be appreciated! Pos/Neg of resting claw marks Arborichnus Repetita
  15. Dear all, It was difficult, very difficult to wait with posting, since I am very, very excited about this fossil find. However, I also wanted the Dutch magazine version to come out first. Well, it finally did this Tuesday, so here is some info in English, along with a couple of the figures. During a visit to the Piesberg near Osnabrück (Germany) in 2010, I found a stem fragment of Calamites decorated with strange, elongate-oval structures [Fig. 1]. While those features were unusual and quite remarkable, it proved difficult to find information about them and the fossil consequently went into my collection as unidentified. Last January, however, I stumbled upon a research paper that could shed light on the matter. The elongate-oval structures turn out to be one of the oldest-known examples of endophytic oviposition, i.e. egg-laying inside plant tissue, by insects. Fig. 1. The fossil specimen is atypical in several respects [Fig. 2]. The stem fragment doesn’t show the longitudinal ribs one usually sees on the internodes of Calamites. This is because we are looking at a preservation of the epidermis (outer layer of the stem), not at a cast of the central pith, which are more commonly found. Fossils of the epidermis (sometimes referred to as Calamophyllites) typically have internodes with a smooth surface (though it may be lightly striated or wrinkled), leaving few diagnostic features. Nonetheless, due to the presence of a characteristic nodal line with large, circular branch-scars [Fig. 2, shown on schematic in green], the fossil fragment can be identified as Calamites (subgenus Calamitina) with reasonable confidence. Below the nodal line with branch-scars, about eight elongate-oval structures can be observed [Fig. 1]. They are all orientated roughly parallel to the axis of the calamite stem and vary in length from 6 to 16 mm. A foreign nature with respect to the plant tissue is suggested by the gümbelite film in which the epidermis is preserved (gümbelite is a hydromuscovite and responsible for the well-known silver-grey colour of the fossils from the Piesberg). Note how this thin film of mineralization does not extend across several of the elongate-oval structures, which may indicate that the plant tissue there is either missing or damaged. Their exact origin, however, remained a mystery to me. Until recently. Fig. 2. While looking for information on some Carboniferous localities in France, I happened upon the research article ‘Earliest Evidence of Insect Endophytic Oviposition’ by Olivier Béthoux et al. (2004). The paper describes insect egg-laying structures, called oviposition-scars, found on two stem fragments of Calamites cistii from the Upper Carboniferous (Stephanian B/C) of Graissessac, Southern France. These scars are elongate-oval structures, orientated parallel to the axis of the stem, occurring on a preservation of calamite epidermis [see their Figures 1 and 2]. Careful preparation of three of these scars yielded small spherical cavities, which the researchers interpreted as imprints of the eggs themselves [see their Figure 2b]. The oviposition-scars from Graissessac vary in length from 5 to 38 mm and are surrounded by a thin film of organic material [see their Figure 2c]. Given the strong resemblance with the Piesberg-material, it didn’t take long to make the link with the mystery markings I found years earlier. Now, after confirmation by email from Olivier Béthoux and in person from Han van Konijnenburg-van Cittert, I can with reasonable certainty say that some sort of Carboniferous insect has laid its eggs in the calamite stem I found in the Piesberg quarry. This type of trace fossils is quite rare, so I am very happy I brought this one home. As a nice bonus this specimen comes from the Westphalian D, and is thus somewhat older (about 4 million years) than the published material from Graissessac (Stephanian BC), which is still cited as the oldest occurrence in recent literature. So you can really say this specimen from the Piesberg is one of the oldest examples around! Hope this was as fun and informative as this fossil has been for me, Tim
  16. So, I was going to open this topic called “Show me your Ichnofossils (aka Trace fossils) and we’d all get to see all kinds of feeding traces, tracks, footprints, burrows and other items, then this afternoon my 90lb dog left me a large gift on the carpet so I’m amending the request and excluding Coprolites from you all, which are ok, but I don’t want to really see them now—OK??!! LOL How about we call this Ichnofossils (part 1---Tracks/trackways/burrows/other traces only) for now!! Some other brave member or moderator can initiate Ichno part 2---Coprolites!) Here are 2 for starters--I'm sure you all have some better ones of these and lots more variety out there--let's seem them! Regards, Chris A trilobite trackway Arkansas A mammal like reptile? Cheilichnus trackway, Arizona
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