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Found 850 results

  1. oddball Pennsylvanian ?alga

    Anyone seen this species or similar? Found in Pennsylvanian spoil piles of central Illinois (near Peoria). Is it part of some kind of alga? Not my find and not my specimen, so these photos are basically what we have to go on. More broadly, can anyone here recommend a Treatise-style taxonomic book detailing known algal heads / macroalgae in the fossil record? Thanks.
  2. Pennsylvanian fossil, any ideas?

    This fossil was found in north attleboro, part of the Rhode Island formation, and the large leaf in the center is around an inch and a half.
  3. Any idea what this is?

    This fossil was found in north attleboro, part of the Rhode Island formation and the largest one is 6 inches in length.
  4. Any idea what this is?

    Any idea what this plant fossil is? It was found in North Attleboro as part of the Rhode Island formation. It’s pennsylvanian in age and just shy of an inch and a half.
  5. Leaf Stem in shale perhaps

    Went looking for ferns and plants today. Spent my lunch hour splitting shale nearby. This one caught my eye. The ghosted pattern around the stem is interesting. I feel like it’s part of it seeing how symmetrical it is. And ideas? Length of the stem part is 2 1/8” (Don’t have a metric ruler handy) To me, the bottom portion is the base, so the shape is confusing.
  6. Pennsylvanian unknown microfossil

    I found this small specimen while splitting some Pennsylvanian black shale today. As usual, I'm not sure what it is. Looks like a jaw to me but I really don't know. It measures about 5mm long. Any thoughts? @jdp @RCFossils @deutscheben
  7. Pennsylvanian black shale unknown

    I found this while splitting some Middle Pennsylvanian black shale (Carbondale Fm) today in Illinois. It certainly looks fishy, but I haven't seen anything like it before. Any ideas?
  8. This concretion came from a Pennsylvanian Shelburn Formation site in Vermilion County, Illinois. The fossils are found scattered throughout concretions in a shale layer and indicate a near-shore marine origin, with the most common fossils being tiny to small bivalves, gastropods, goniatites and inarticulate brachiopods, along with occasional plant material. This one has me puzzled though. The concretions don’t split neatly like those from Mazon Creek, so unless the specimens were already exposed by weathering in the field I just smash them and hope it exposes a fossil. This is the only one that looks like this, showing a jumble of negative impressions of organic shapes, some of which are reminiscent of ribs and vertebrae. I can’t make out anything definite, though, so it may just be a suggestively preserved plant or crinoid, or who knows. The section with impressions is about 20 mm wide. Thanks!
  9. Isolated Pennsylvanian micro tooth

    I found this teeny tiny tooth when I was smashing some matrix from the Pennsylvanian La Salle Limestone. It’s about 2 mm tall and has a shiny tip and more matte “root”. Since this is a marine deposit my assumption would be that this is a fish tooth, but is it possible to identify it any further? Here it is on the matrix: and here is the tooth itself:
  10. I headed out to Mazon Creek IL a few days ago and came back with some fair nodules. I found a big nodule(6) and used the freeze thaw method to open it, I think it might be a jellyfish but I’m unsure, as I guess it could be nothing. 1 and 2 just have irregular shapes and I believe are made of pyrite. 3,4 and 5 are nodules that did not open from freeze thaw so I broke them with a hammer, and they have some white marks but I’m not sure if they are anything at all. Help with any of these finds would be awesome, and I had quite the adventure at Mazon as it rained and was quite filled with ticks!
  11. Hi All, I'm having trouble identifying what I have here. It's from the Upper Carboniferous - Pennsylvanian Stark shale. It is in a phosphorite nodule. Dimensions are 1.5 inch (3.81 cm) long by 1 inch (2.54 cm) wide. Any ideas would be appreciated. Apologies for the green tint - not sure what that is except for maybe the camera picking up the radiation from this shale layer . Thanks,
  12. Late Pennsylvanian long bone

    Not sure if this bone is identifiable whatsoever. It is from the LaSalle Limestone (Late Pennsylvanian) in Illinois. There is not much original bone remaining but there is a decent impression of (at least part of) what is missing. The lack of non-cartilaginous fish from this unit makes me suspect tetrapod (which have been reported), but I'm not sure if this bone can be identified anatomically. Any thoughts are appreciated.
  13. Hi Everyone, I’d like to share a few posts on the shales I’ve been hunting recently in Kansas City, Missouri. Long story short – my neighbor is digging a ‘pond’ to China. He has massive equipment from his business and so far he’s dug through about 35 feet (~10.6 M) of material. My land matches his where the dam to the pond is and I saw shale in it which really surprised me since I’ve never found shale on my property. Even in the creeks and gullies. I would also like to say that I have been really inspired by the posts from @connorp and @deutscheben about the shale they find in Illinois and wanted to show a similar collection from a specific location/member in Missouri. Here’s a rough Lithology table of my area: The pond was dug through the Winterset Limestone member through the Stark and I believe through the Galesburg shale members and into the Bethany Falls Limestone from the top of the hill we both live on! It’s absolutely magnificent. I asked him if I could take some of the shale that he went through and all he said was, ‘take it all,’ and so I did. I passed on the limestone since its way more readily available to collect in the area and I hadn’t ever hunted through shale. I’ve gone through about 250 lbs (113 kg) of shale within the last few weeks and would like to sporadically present my findings as I can make time for it. Completely unrelated to his digging I listed and sold my house and land and am moving my family to Texas. All of this has happened within a month or so. I feel that this last hurrah into shale is a way for me to say goodbye to the state I’ve lived almost my entire life in thus far. Here’s one of my wheelbarrow loads of shale. I am no scientist but will do my best to assign at least some family or species to my finds. I love the adventure of findings fossils, prepping them can be therapeutic at times and insanely frustrating at others, and assigning species is my least favorite. Probably because I am not naturally good at it. If you see a species you feel is wrongly identified please feel free to share. It’s my weak point so I’d appreciate anything that helps me get better at it. The Galesburg layer is really hard to hunt from because it’s mudstone/claystone at the top then turns into harder grey shale at the bottom. It brakes vertically into rounded blocks instead of horizontally when you try to cut or split it and destroys the fossils that it contains. At the slightest addition of moisture it crumbles and the paper thin fossils are lost. This is a chunk of it I accidentally left out one night that succumbed to the dew from one evening and following morning. It’s filled with material I am having a hard time placing but I am calling it plant material until I can more accurately identify it. Unfortunately I didn’t get hunting till a few weeks after this layer had been dug out and the vast majority if it returned to mud. Without future ado, let me begin my adventure into Missouri shale. Here’s what I believe may be part of a Calamites plant. From what I am calling the Galesburg claystone. Scale in cm/mm. Here is another unknown that I believe is some type of plant stem. The Galesburg material is so much harder to deal with that I have a lot of it in storage now to go through at a later point.
  14. A recent item in our local TV news (CHEK in Victoria) caught my eye... A local guy who makes models of anything and everything, apparently, was commissioned to make a life-sized Arthropleura (the huge myriapod from the coal swamps) for the Burpee Museum in Illinois. Catch it while the video is still posted: https://www.cheknews.ca/chek-upside-saanichton-artist-recreates-prehistoric-millipede-680876/ Would be nice to see pics of it when it arrives in place, from any of you who live in that area
  15. Zeilleria Fern (?)

    From the album Plants of the Lewellyn Formation

    Peek a boo! A Carboniferous Zeilleria fern from northern Pennsylvania is exposed through a chip in the shale. Normally I'd just chip it out, but I'm thinking I might just leave this as is. It appeals to the artist in me. Lewellyn Formation Pottstown Member
  16. Late Carboniferous Gastropod

    Possible ID of Trepospira sphaerulata from a local gastropod expert, but he isn’t sure. Similar ones in a group with original specimen at the right. Left is suspect of being related, but it might be.
  17. Plant Hash Plate

    From the album Plants of the Lewellyn Formation

    1) Shrub/vining plant - Spenophyllum majus 2) unidentified seed fern 3) Neuropteris sp. 4) Scale tree- Lepidodendron sp. 5) Seed Fern- Alethopteris sp. 6) Seed Fern- Neuropteris? 7) Shrub/vining plant- Sphenophyllum sp. McIntyre Mt., Ralston, PA Pottstown member, Lewellyn Fm. Carboniferous
  18. Hey guys! It’s been a while since I’ve been active, it’s good to be back My roommate and I took a trip out to Oglesby, IL today for his first fossil hunt! We found some nice brachiopods, but the absolute winner for me were two associated shark teeth (I think). It might be a cladodont, but sharks are really out of my spectrum, so if anyone could help I’d be quite appreciative! Oglesby, IL LaSalle Limestone Member Bond Formation Carboniferous, Pennsylvanian Tooth 1 Tooth 1 wet Tooth 2 Tooth 2 wet
  19. Lepidostrobophyllum or something else?

    Hi all, I discovered this rather unusual fossil at an exposure of shale a few feet above the Mahoning coal of the Glenshaw formation, which is Westphalian D in age. I was thinking that it is probably just Lepidostrobophyllum, as the Mahoning coal is pre Carboniferous Rainforest Collapse so lycopod material is relative common within its horizon. For those of you that don’t know, Lepidostrobophyllum is a leaf like part of the Lycopod reproductive cone. However, I have found arthropod material at this exposure before and just wanted to make sure that it is in fact Lepidostrobophyllum and not something else. Thanks in advance
  20. Everyone here on the forum knows @Nimravis is very generous with his...um...poop. I was the lucky recipient of a Mazon Creek (Pit 4) carnivore coprolite with a very intriguing inclusion. Does anyone recognize this once tasty morsel? Bug bit? EDIT: The scale bar in the photos is 1 mm.
  21. I'm confident that I found this fossil in a Mississippian age layer. I used the book, "Plant Fossils of West Virginia" by the WVGES to identify this fossil. The example that I found in the book is small and in grayscale, and visual representations of this plant are lacking online. Any help in confirming or identifying this fossil would be greatly appreciated. Thanks!
  22. Hi everyone Surface find in SW Arizona that I would like to ID if possible. I believe this is Stromatolite and it appeared to have a shark, Ray or Skate egg sack on it so I brushed some synthetic oil on it and put it under the microscope. looks like something inside there to me. My first thought is Xenacanthus although whatever that is in there doesn't really match up that well. Complete newbie here asking is this Stromatolite ? and what is that in the egg sack ?. Finding Graptolites, Arthropod's and Stromatolite in the same areas.
  23. Pecopteris sp.

    From the album Plants of the Lewellyn Formation

    Fern leaf Columbia County, Pennsylvania Carboniferous Lewellyn Formation
  24. Neuropteris ovata

    From the album Plants of the Lewellyn Formation

    Fern leaf with colorful iron oxide coating left by the plant itself Columbia County, Pennsylvania Carboniferous Lewellyn Formation
  25. Neuropteris ovata

    From the album Plants of the Lewellyn Formation

    Fern pinnae Columbia County, Pennsylvania Carboniferous Lewellyn Formation