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  1. Recently we had a quick exploratory trip just south of Sydney in search of Triassic fish and Tertiary leaves. Our first stop yielded a terrific but partially weathered nodule exposed in an outcrop of the Ashfield Shale. A clear layer was present in the cross section so it was likely to yield a fish! This is it after most of it was removed, unfortunately I don't have any before photos but the layer through the middle is clearly visible: Will include photos of the prep later in this post. Our next stop was the main focus of our trip but wasn't too eventful unfortunately. We drove around back roads looking for new outcrops of an unnamed Tertiary formation which sometimes yields very well preserved leaves and insects. We found a few outcrops of it but only one section of road yielded any good leaves. The site: A freshly broken rock with leaves: As soon as we got home I started on the fish nodule. The fish layer had already partially split which was helpful, but meant the inside was quite weathered and covered in calcium carbonate. Splitting the nodule carefully with a knife: A fresh split. Note the white calcium carbonate encrusting the surface: Soaking the pieces in acetic acid (8% vinegar) to dissolve away the calcium carbonate: The same piece I showed before after acid preparation, the fish are now clearly visible: Splitting the rest of the nodule: Reassembling after acid prep: The rock is a thick siderite nodule so is very heavy once all glued together. With pieces this large I usually make a spray foam cradle for the pieces to sit in, meaning I can disassemble it to move it around. Loosely assembled and starting with the spray foam: Surprisingly, this nodule ended up being packed with fish. The main large fish in the middle is likely a species of Elonichthys, but throughout the rest of the nodule are several other genera including Saurichthys, Cleithrolepis and Elpisopholis. Overall I can count just under 60 individual fish on this one rock, many are just small sections of scale pattern though. The Cleithrolepis is likely complete but sits underneath a couple of other fish, and the Saurichthys is tiny and incomplete but its long snout is unmistakable. The preservation in most of the specimens is poor, as with most other Ashfield Shale nodules, but the association of so many fish is of interest! One half of the nodule, I haven't quite finished the counterpart yet but it does have slightly better preservation. Note the partially exposed Cleithrolepis just in front of the pectoral fins of the largest fish: A small but particularly densely packed section: Will include more photos in coming days!
  2. A few days ago we visited Penrose State Forest (south of Sydney, Australia) to look for fossilised leaves. There are a few specimens from this locality in the Australian Museum collection and one of our contacts tracked down the sites many years ago. I'm not sure which species are represented here, there are a few similar described Tertiary sites like this one in Australia but this one hasn't been studied to my understanding. I doubt these can be reliably identified given the poor quality of preservation but they're still really pretty imo, the matrix is gorgeous. Here is the first specimen, I'll post some others as I photograph them
  3. I’d like to see the Pliocene fossils from California that people have I’ll start off with some fossils I collected from the Purisima formation at Capitola Beach A vertebra with a shell on the back A heavily eroded whale vertebra with some associated (rib?) bones Some cool clam shells Edited to add: Here’s a clam shell I dug up from the Pinole Tuff formation when I was 7. It was the first fossil I ever found
  4. Skeetersaurus

    Shark tooth bonanza

    I know this is a late post but I had a trip for fossils a few weeks back and wanted to share the finds. Love it when I get something nice for the case!
  5. Skeetersaurus

    Shark Tooth Hunt, 19 Feb

    Hey guys, went on a fossil hunt this weekend and found a nice variety of teeth. Weather was great for a change and the water was perfect. I was only able to get in about 2 hours but here's the goods. Can't wait to go back!
  6. Hello all, I collect shark teeth (like so many of you =). My question: are there any collectors that have Dutch Megalodon teeth/fragments and/or Belgium/German O. megalodon? Pictures of your fossils/fossil teeth are very welcome! Kind regards, Fossilsforever
  7. Barrelcactusaddict

    Canadian Amber (Allenby Fm., 52.5-48 Ma)

    From the album: Fossil Amber and Copal: Worldwide Localities

    3.0g of amber, from the same lot in the two associated entries. This mid to late-Ypresian material comes from an old site near the abandoned mining town of Blakeburn, which site and its gangue piles are now technically owned by a coal mining company (although the existing legal claim of the individual who collected this amber is being overruled by the company). The amber is found primarily in association with Metasequoia sp. remains/imprints, however Pinus and Pseudolarix (among others) remains are also found in a lesser quantity at the site.

    © Kaegen Lau

  8. Barrelcactusaddict

    Dominican Amber (La Toca Fm., 20.43-13.65 Ma)

    From the album: Fossil Amber and Copal: Worldwide Localities

    Opposing view of same specimen from associated image, weighing 10.0g and measuring (mm) 40x31x20; note the rough, unaltered (i.e., unbroken, natural) exterior of the specimen. Most dominican amber is transparent to translucent, yet this specimen is more akin in appearance to the "butterscotch" variety of Baltic amber; I have not determined if the turbidity is due to microscopic air bubbles, or organic inclusions, though it is most likely the former. This type of dominican amber is sometimes seen as a thin layer/flow overlying transparent material, but this specimen is mostly whole, and it's unaltered exterior does not indicate to its having overlain any previous flows. I uncovered this piece while cleaning a 2kg lot of mine-direct material (La Cumbre Mine).

    © Kaegen Lau

  9. Barrelcactusaddict

    Fushun Amber (Guchenzgi Fm., 56-50 Ma)

    From the album: Fossil Amber and Copal: Worldwide Localities

    A small, partially broken nodule of amber from the West Open Pit Mine in Fushun, China, weighing .8g and measuring (mm) 15x11x10. The mine was closed in 2019, but small pieces of amber are still recovered from coal found in the gangue piles; it is separated from the matrix by mechanical action and immersion in large vats of saltwater solution, and recovered with netting as it collects at the surface. This material is hard, takes a high polish, and is often shaped and drilled to make beads. Its chemical and spectrographic signatures indicate this amber is derived from a cupressaceous source.

    © Kaegen Lau

  10. Barrelcactusaddict

    Fushun Amber (Guchenzgi Fm., 56-50 Ma)

    From the album: Fossil Amber and Copal: Worldwide Localities

    A small run of amber from the West Open Pit Mine in Fushun, China, weighing .7g and measuring (mm) 11x15x9; the oblique view better displays the slightly oxidized surface of the largest flow in the piece. The mine was closed in 2019, but small pieces of amber are still recovered from coal found in the gangue piles; it is separated from the matrix by mechanical action and immersion in large vats of saltwater solution, and recovered with netting as it collects at the surface. This material is hard, takes a high polish, and is often shaped and drilled to make beads. Its chemical and spectrographic signatures indicate this amber is derived from a cupressaceous source.

    © Kaegen Lau

  11. Barrelcactusaddict

    Fushun Amber (Guchenzgi Fm., 56-50 Ma)

    From the album: Fossil Amber and Copal: Worldwide Localities

    A small run of amber from the West Open Pit Mine in Fushun, China, weighing .7g and measuring (mm) 11x15x9; note the several flow lines of successive runs. The mine was closed in 2019, but small pieces of amber are still recovered from coal found in the gangue piles; it is separated from the matrix by mechanical action and immersion in large vats of saltwater solution, and recovered with netting as it collects at the surface. This material is hard, takes a high polish, and is often shaped and drilled to make beads. Its chemical and spectrographic signatures indicate this amber is derived from a cupressaceous source.

    © Kaegen Lau

  12. Barrelcactusaddict

    Fushun Amber (Guchenzgi Fm., 56-50 Ma)

    From the album: Fossil Amber and Copal: Worldwide Localities

    A small run of amber from the West Open Pit Mine in Fushun, China, weighing .7g and measuring (mm) 11x15x9. The mine was closed in 2019, but small pieces of amber are still recovered from coal found in the gangue piles; it is separated from the matrix by mechanical action and immersion in large vats of saltwater solution, and recovered with netting as it collects at the surface. This material is hard, takes a high polish, and is often shaped and drilled to make beads. Its chemical and spectrographic signatures indicate this amber is derived from a cupressaceous source.

    © Kaegen Lau

  13. Barrelcactusaddict

    Fushun Amber (Guchenzgi Fm., 56-50 Ma)

    From the album: Fossil Amber and Copal: Worldwide Localities

    Roughly 200g of small (≈1g) nodules and runs of amber from the West Open Pit Mine in Fushun, China; the mine was closed in 2019, but small pieces of amber are still recovered from coal found in the gangue piles; it is separated from the matrix by mechanical action and immersion in large vats of saltwater solution, and recovered with netting as it collects at the surface. This material is hard, takes a high polish, and is often shaped and drilled to make beads. Its chemical and spectrographic signatures indicate this amber is derived from a cupressaceous source.

    © Kaegen Lau

  14. Barrelcactusaddict

    Dominican Amber (La Toca Fm., 20.43-13.65 Ma)

    From the album: Fossil Amber and Copal: Worldwide Localities

    Small run of amber from the La Cumbre Mine, weighing 2.4g, and measuring (mm) 37x13x8. It consists of numerous successive flows, and contains several small single-phase bubbles; as this specimen does, several others I have (from the same 2kg lot) from this locality also display an interesting "schiller" effect when adjusted in-hand (light reflects off of the flow lines' surface). Biological inclusions are a possibility with this specimen, though I will need to prepare it to confirm this.

    © Kaegen Lau

  15. Barrelcactusaddict

    Dominican Amber (La Toca Fm., 20.43-13.65 Ma)

    From the album: Fossil Amber and Copal: Worldwide Localities

    Small run of amber from the La Cumbre Mine, weighing 2.4g, and measuring (mm) 37x13x8. It consists of numerous successive flows, and contains several small single-phase bubbles; biological inclusions are possible, though I will need to prepare the piece to confirm this.

    © Kaegen Lau

  16. Barrelcactusaddict

    Dominican Amber (La Toca Fm., 20.43-13.65 Ma)

    From the album: Fossil Amber and Copal: Worldwide Localities

    Dominican amber from the La Cumbre Mine, from the Cordillera Septentrional. Most pieces range from 5-10g in weight, with at least one containing a large two-phase inclusion (enhydro). Material from this mine frequently presents exterior crusts/aggregates of pyrite (iron sulfide); these were likely formed in a reducing, marine/lacustrine environment, where marine sediments, organic detritus, volcanic material (i.e., ash), and sulfate-reducing bacteria helped to provide the sulfides and iron needed.

    © Kaegen Lau

  17. Barrelcactusaddict

    Dominican Amber (La Toca Fm., 20.43-13.65 Ma)

    From the album: Fossil Amber and Copal: Worldwide Localities

    A rare and very unusual specimen, weighing 10.0g and measuring (mm) 40x31x20. Most dominican amber is transparent to translucent, yet this specimen is more akin in appearance to the "butterscotch" variety of Baltic amber; I have not determined if the turbidity is due to microscopic air bubbles, or organic inclusions, though it is most likely the former. This type of dominican amber is sometimes seen as a thin layer/flow overlying transparent material, but this specimen is mostly whole, and it's unaltered exterior does not indicate to its having overlain any previous flows. I uncovered this piece while cleaning a 2kg lot of mine-direct material.

    © Kaegen Lau

  18. From the album: Fossil Amber and Copal: Worldwide Localities

    1.2 gram amber from Tiger Mountain, King County, WA. Smaller inclusions consist mostly of slightly darker, congealed resin positioned along natural flow lines; this feature is by far most commonly seen among the Indonesian ambers. The few large, dark masses are botanical debris. Image taken under approx. 10x magnification with a Belomo Triplet loupe. This amber is middle to late Eocene in age (about 41.3-33.9 Ma), and comes from coal seams along the boundary between the upper Tukwila/lower Renton Formations.

    © Kaegen Lau

  19. From the album: Fossil Amber and Copal: Worldwide Localities

    Two exceptionally fluorescent pieces of amber from Tiger Mountain, King County, WA. These were illuminated with a 140 lumen LED penlight, not a long wave UV light; this is a surprising feature for amber of this locality, as blue amber is only well-documented to come from the Dominican Republic, Indonesia, and Chiapas. This amber is middle to late Eocene in age (about 41.3-33.9 Ma), and comes from coal seams along the boundary of the upper Tukwila/lower Renton Formations.

    © Kaegen Lau

  20. From the album: Fossil Amber and Copal: Worldwide Localities

    9.2g amber from Tiger Mountain, King County, WA. This amber is middle to late Eocene in age (about 41.3-33.9 Ma), and comes from coal seams along the boundary of the upper Tukwila/lower Renton Formations.

    © Kaegen Lau

  21. Barrelcactusaddict

    Sumatra Blue Amber (Sinamar Fm., ~30 Ma)

    From the album: Fossil Amber and Copal: Worldwide Localities

    Palm-sized piece roughly 80g in weight, from the 2 previous entries. This photo better displays the surface fluorescence of the specimen.

    © Kaegen Lau

  22. Barrelcactusaddict

    Sumatra Blue Amber (Sinamar Fm., ~30 Ma)

    From the album: Fossil Amber and Copal: Worldwide Localities

    Palm-sized piece roughly 80g in weight, from the previous entry. Transmitted light through the deepest portion of the piece displays the amber's deep red coloration.

    © Kaegen Lau

  23. Barrelcactusaddict

    Sumatra Blue Amber (Sinamar Fm., ~30 Ma)

    From the album: Fossil Amber and Copal: Worldwide Localities

    Palm-sized piece roughly 80g in weight. There is a very thin layer of coal on the top and bottom of the piece, making it a good example of a seam-type formation. It's blue coloration is purely surface fluorescence, initiated in this case by a 140 lumen LED light; this fluorescence (especially under a non-LW UV light) is caused by the presence of an exceptionally high concentration of various hydrocarbons contained within the amber.

    © Kaegen Lau

  24. Barrelcactusaddict

    Rovno Amber (Mezhigorje Fm., 33.9-28.1 Ma)

    From the album: Fossil Amber and Copal: Worldwide Localities

    Two pieces, roughly weighing 7 and 4 grams respectively. Both are mined from the Rivne region of Ukraine's Rivne Oblast, and had a little to no oxidized layer, in comparison to amber mined from the nearby (roughly 50 km) Klesiv Deposit.

    © Kaegen Lau

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