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Found 205 results

  1. Piles of Tree Looking Rocks

    Not at all sure what I'm looking at, but we're at my father-in-law's property in Arizona desertnear the river and we found lots of piles of rocks around that look like tree bark to me. Any help? EDIT: THIS IS THE LARGER ROCK THE SECOND PIC IS A DIFFERENT ROCK. For ID purposes I will label the large one Rock A and the smaller one Rock B. This is a pic of Rock A here:
  2. Petrified wood?

    Here's one more photo from the Sumter County field trip. This specimen was still in the chalk, perpendicular to the plane of the bed. Sorry I didn't snap an in situ photo. If this one is man-made, you can put the dunce cap sticker by my name for a week
  3. paleobotany

    I have found a piece of petrified wood that I have ID'd as Paraphyllanthoxylon, thought to be a large common tree during the tropical Cretaceous. Very near it, I found a piece of petrified wood that is from the genus Quercus, very modern looking. the two shouldn't be found together as I understand their temporal distribution. Does anybody have a time range for when Paraphyllathoxylon is thought to have existed? I can't find an age range in any of the literature I have looked through (far from an exhaustive search). Brent Ashcraft
  4. Hi all, Is there any petrified wood in the Joshua Tree, California area? I googled and couldn't find anything. I'm assuming that means it's not there. I found this rock (not in the park) and to my untrained eye it looks like petrified wood but I'm guessing that it's probably just a sedimentary rock. It's pretty hard though, not soft like the sedimentary rocks I'm familiar with up here in the San Francisco Bay Area. Thanks! Heather
  5. I do not have a large fossil/rock collection, but what I do have I am proud of. This is my rarest piece I have. It is a piece of petrified wood from The Allan Hills, Antarctica. During the 2001-02 summer I was fortunate enough to land a job as a janitor at McMurdo and was night janitor at Crary Science Lab. So a guy I know had went out to do work in the area and brought back samples. He was like, "you want some petrified wood?" I happily took it not knowing at the time how rare and hard this was to get. Also, this is a rather large piece, being about the size of the palm of my hand and while we moved it split along a weak plane falling into two pieces. It was ok, because I can display it better now. I have some other rocks from Antarctica I will show at some point. Since my collection is small I will spread it out over time.
  6. Breaking open Petrified Wood

    In general, how much benefit can be found in breaking open petrified wood? Looking for remains of the wood's internal structure. Any info or comments would be appreciated Kim
  7. Southern Illinois petrified wood

    Out collecting some chert in Union County Illinois and came across two chunks of what I think are petrified wood. The small piece in the first two photos shows good wood grain, and an odd black chert or almost coal looking layer around the outside. The larger piece doesn't seem to show much grain...notched a corner off on a tile saw but the cut is so rough it's hard to see what the grain looks like. Both have an odd flattened cross-section seen in the photos. The 'bark' is odd to me too - thought it might be fossilized bone at first but don't think so anymore. Anyone else that hunts around there seen this before? Appreciate any info. Thanks for looking!
  8. Scouting trip

    My wife and I went on a scouting trip in NC today. Unfortunately we found no shark teeth, but we did find a lot of mosquitos, looks like a piece of petrified wood and what I believe is a chunk of coal.? On to SC this weekend to check out some new sites.
  9. Can anyone recognize where these silicified wood might be from and the age? I bought them in Taiwan but they come with no information. Thanks in advance!
  10. Hello! I found this chunk of something in Frankstown, MS while looking for shark teeth. There is so much petrified driftwood there and many pieces look similar to this. I picked this out at first thinking it was wood.. but I didn't see the little bumps along one side (I'm being very generic because I don't want to call it something it isn't and I'm not sure yet what it is ) until I got home. I also noticed when I got home that it is hollow and looks a bit like bone. After seeing this, I thought it was probably a fin spine or a ray barb. Others say it is a barb, but if it is, I'd love to know more. I would think it would have denticles along both sides, but the other side is rounded. Rays found at this location are Brachyrhizodus wichitaensis and Brachyrhizodus mcnultii. Specimen is 2" long
  11. My Petrified Wood / Chert

    Apologies for the old yard stick and any other amateurities Found in SE Fayette Co. Texas. (Clay/Sandy clay)
  12. Petrified Wood or Not?

    I'm a complete newbie! But am working hard to learn as much as I can. I keep finding specimens that I think might be petrified wood. I've tried doing as much research as I can online, but as of yet I'm no closer to knowing if what I've been finding is really petrified wood or not. Can anyone help me?
  13. Petrified Wood?

    Is this petrified wood? It is extremely heavy for its size.
  14. Good evening. Here are some of my trunks and branches from the phosphorite horizon (Cenomanian). Found in one place. To all fit this description: Continent: Europe Country: Ukraine Region: Donetsk region Era: Mesozoic Period: Cenomanian Age: 100.5 ± 0.4 million years
  15. My collection

    Hello to everyone. I'm from Ukraine and here are some of my fossils. Description Ichthyosaur’s tooth (Platypterygius or Pervushovisaurus). Additional Information Continent: Europe Country: Ukraine Region: Donetsk region Era: Mesozoic Period: Cenomanian Age: 100.5 ± 0.4 million years
  16. Any thoughts on this piece my boyfriend found today at Port Williams beach in Sequim, WA? It was in the bluff half exposed after a fresh slide. No scale to weigh it here...but it's pretty heavy probably 4-5 pounds.pp More photos in following post. Thank you!!
  17. Hi all! On a resent trip to Motunau beach in the South Island of New Zealand I found what looks to be petrified wood. As I am a complete amateur and this is the only fossil I have ever found, I ask all on this forum to please help me identify this "Fossil". The fossil appears to have a grain running along the side and circular holes when looking at the end grain which become coarser towards the centre. I cannot see any indication of growth rings. The colour is a dark brown on the outside which changes to a lighter brown in the centre. The shape appears to be almost triangular in cross-section. The "fossil" seems to be in a mixture of sandstone and a conglomerate of pebbles. Below are some photos I took, hopefully they're clearer than my use of geological terminology. Thank you all in advance.
  18. Greeting from a new member. I'm not very deep into the fossil world but as a rock hound I've picked up some from time to time and enjoy geology and minerals. My partner Judith and I have some of the more common fossils you find at the rock shows, crinoids, ammonites and some fossilized teeth (her dad was a dentist). I've been picking up petrified wood from a local creek here for the last ten or fifteen years, mostly hand size and finger size. Two years ago I came across a large deposit of wood and that got me excited. There was about four hundred pounds that i brought back to clean up and study, the biggest one was three foot by two foot by 1 foot. When I got the pieces back it became clear that a number of them fit together so in part it's a large tree trunk that feel apart after it was fossilized. Geologically this area is in the upper Cretaceous period and lignite with pyrite is more common then petrified wood. I've had thin sections done and could use some help identifying the family or genus and maybe species? I've been using the tools that are out there like insidewood.com but would greatly appreciate help from someone with more experience. It looks like soft wood to me but have not been able to find a good match for the rays. The images were taken with my phone through the microscope lens, not too bad. Thank you in advance for any feedback and help.
  19. Petrified Wood or Plant? Please Help ID

    Im thinking Petrified Wood. Its about 1 1/2 ft wide app. 20lbs. Here are pics from different side views & some close ups of fossils and what not.
  20. Is this petrified wood or a rock?

    Hello, My grandma wanted me to check if this may be a large piece of petrified wood? I tried to get decent photos on my ipod. This piece is about 10.5 inches long (at it's longest point) and weighs nearly 15-lbs.
  21. Petrified Wood with black layer?

    This piece of petrified wood that I collected from the river rock in my grandma's backyard where she used to have a man-made pond has a black layer that goes all the way around, and I was wondering if anyone could possibly tell me why it may have this layer?
  22. Chromium Petrified Wood?

    Hello! I have come across a very interesting piece of petrified wood, and I would just like some opinions as to what it is. It has a very pronounced mint green to dark green color, and it looks very much like the pieces of chromium petrified wood that I've found on the internet. The piece weighs about 9-10+ pounds. Does anyone have any ideas as to what it might be? The images can be seen with the following URL: http://imgur.com/a/yE2XA
  23. Hello Forum, Recently, I acquired the petrified wood specimen (probably maple, Acer sp.) below at a local mineral show. It comes from the Holleywood Ranch in Linn County, Oregon. The broader area, well known for its petrified wood, is often referred to as "Sweet Home", or the Sweet Home Petrified Forest. According to Gregory (1968), the petrified wood is derived from some Miocene age subunit of the Little Butte Volcanic Series (details not entirely clear to me). I really liked the specimen because it shows a structure that I would interpret as the phloem (see this and this website). Though dependent on your definition of the term, this would mean part of the bark is preserved (quite rare, in my experience). Below the photo is an annotated micrograph of the region indicated in the overview. Does my interpretation make sense? Is this really wood (secondary xylem) plus the bark? I would also like to know why the last growth ring(s) of secondary xylem would stick to the bark? I can imagine the latter swelling up and becoming loose as the wood (waterlogged) was underwater for some time, but why not de-bond at the cambium then? Thanks for your feedback! Tim (micrograph made as follows)
  24. What Is This?

    Good morning all, we have recently found this in a local river and are very curious as to what it could be.. we initially thought that it was petrifies wood or a cross section of a pine cone.. but we are newbies and don't really have a clue.. we have had a really good look online and still have no clue. if anyone has any suggestions we would love to know your thoughts.. its approximately 2 inchs x 1 inch.. I have taken a pic from both sides. so you can see the resin/sap/amber running all the way through.. any knews is good knews.. please help..
  25. From the album Double Duty

    Here is a microscopic view of the coprolite. It reveals the almost "poo-fect" hexagonal geometry indicative of these tiny termite sphincter sculptures. Age: Upper/Late Cretaceous Formation: Aachen Sand Location: Buschtunnel, Aachen, Germany

    © &c

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