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  1. Before the construction of the Fore River Shipyard in Braintree and Quincy, a bit of the Braintree Argillite was dumped in Quincy. I have rediscovered the site of the spoil piles which are briefly mentioned in a paper about the MA trilobites. I got a few minutes of collecting before the rain got too heavy and I had to leave. The trilobites are found in a fine grained, weakly bedded light argillite that oxidises and forms an orange coating when weathered. I found some larger Paradoxides fragments in a darker argillite with a slightly larger grain size. This argillite weathers first to a blotchy dark grey, then orange spots of what look like limonite form on the surface. Trilobites are also found in an almost chert-like massive argillite that contain dark things which look like trilobite shell but are some sort of mineral. All contain vugs of calcite and pyrite. The finds. Paradoxides harlani left genal and small glabella. Left pleura, And a poorly preserved cranidium on the back. An even more poorly preserved cranidium. Believe it or not, even more badly preserved. Very partial imprint. Still more badly preserved. Large cranidium taken under dramatic lighting. A very effaced bunch of thoracic segments. Negative but still with some shell. Taken under dramatic lighting. And last, a very unusually rectangular cranidium, with a ”Agraulos” quadrangularis on the left of it. Notice the very robust occipital spine on the unidentified. Any ideas? Thanks to @piranha for the papers.
  2. Oldest fossils I have ever found as these Early Cambrian Trilobites are estimated to be half a billion years old! Still trying to wrap my head around that. lol Much thanks to the SoCal Paleo Society which organized this field trip back in 2021 out to the remote site in the Mojave Desert. Based on various ID help I got, these are mostly Bristolia bristolensis, Bristolia mojavensis, and some others are not ID'ed yet. These were small and around an inch or so in width but one member of our party found part of a much larger one further up the mountain. The ID sheets with examples were brought by the trip organizers to help with ID's. The Latham shale these Trilobites are found in is somewhat brittle and I used a putty knife to carefully pry apart layers to look for Trilobites without shattering them. Most survived the process. These are just trace fossils but have some pretty good detail surprisingly.
  3. Hardly anybody ever talks about the Cambrian fossils of the southern midcontinent (USA). They're super-underappreciated. Show us what you've got! Here's one to start us off: Thorax and pygidium of a trilobite, possibly Orygmaspis, typically referred to as "Orygmaspis cf. Orygmaspis llanoensis" but probably a different species altogether. Note the two pairs of macropleural spines marking the final thoracic segments. Davis Formation (late Cambrian: Furongian), south side of Highway 8, St. François County, Missouri.
  4. Isotelus2883

    ROM- Dawn of Life Gallery

    I visited the ROM in Toronto, during the Toronto trip. I’ll just let the images do the talking. Metaspriggina The wall of early spines. Sponges, and other things. A worm. Gogia.
  5. Nautiloid

    2023 fossils

    Howdy folks! I’ve had a lot going on so I haven’t been super active on here as of late, but I wanted to do a little recap of some of my favorite finds and acquisitions of 2023. Hope yall enjoy! Thanks for looking! First up is by far my favorite find from last year. This bug was collected as a ventral specimen in February, and was flipped and prepped dorsally by Jon Ginouves. Hypodicranotus striatulus is an exceptionally rare species from the Middle Ordovician Trenton Group of NY and equivalent strata in Canada. This is the first NY specimen I have ever seen or heard of coming out of strata outside of the Walcott-Rust Quarry. Up next is another piece from the same locality as the Hypodicranotus. I believe this came out of the site in the late spring or early summer. Generally, juvenile Gravicalymene magnotuberculata are near impossible to find, but I stumbled upon a mass plate containing around 20-25 specimens ranging from prone to fully enrolled. It is entirely possible that this is the largest cluster of this species ever collected, which is pretty sweet. This pic doesn’t show the whole plate, but you can get the general idea of how plentiful the trilobites are! This next specimen is just a cephalon, but it is from the iconic and very rare Walcott-Rust Quarry trilobite species Sphaerocoryphe robusta. This was found when I visited the locality in June with @KompsFossilsNMinerals . Normally I only focus on trilobites while collecting, but this past October I made a couple short visits to a Fiddlers Green Formation eurypterid site very close to my college campus. Eurypterid material is very sparse, but I did find some pretty interesting pieces. The most exciting of these was a partial Dolichopterus macrocheirus specimen showing the prosoma, 2 tergites and most of the appendages. Along with the usual trilobite suspects, I also ventured into some new territory strata-wise. I was able to visit an Onondaga Limestone locality several times during the summer and fall where I found half a dozen or so Odontocephalus selenurus specimens. Through my work in the Tully Limestone, I have become good friends with Steven Mize, who primarily collects the unit’s trilobite species. He invited me to come collect the Tully with him in July, which is when he gave me this beautiful enrolled specimen of an undescribed Basidechenella sp. While out collecting, Steve found this plate of 6-8 undescribed Asteropygine sp. , which he was kind enough to let me keep! During this past fall, I became very interested in the various Cambrian biotas of China. Here are a couple of Radiodont appendages I acquired. I believe the first one is Guanshancaris kunmingensis, and the second is Anomalocaris saron. This is my favorite trilobite I acquired from China. Although it is only a partial, this Redlichia mansuyi from the Guanshan biota exhibits one of its robust antennae!
  6. I just bought this giant Cambrian trilobite fossil from a consignment shop that specializes more in carpets than in fossils. I am a beginner at fossils and didn't realize until after purchasing that this type of fossil is very frequently faked. Does any part of this look real to you all or does it look like a composite/ cast? I am particularly suspicious of the bottom left portion which looks carved to me, but again my knowledge is very limited so I am open to the possibility it is entirely fake. I did shine a UV light on it but am not exactly sure what I am supposed to be looking for there? Also, I am not sure if this is relevant but it has a strong rusty smell to it. If it is fake, I will reach out to my friends at the shop and see what my options are; I am one of their favorite customers haha as I have purchased a lot of high-ticket carpets from them, so I feel confident they will make me whole in one way or another.
  7. Steven Veatch


    I think these are fossils, found in the Hickory Sandstone, mid-Cambrian. If they are fossils, I cannot identify them. The fossils are on ripple marks.
  8. An amazing agnostoid arthropod was recently named in my honor. The Great Cambrian-Ordovician trilobitologist: John Taylor has bestowed Lotagnostus morrisoni upon yours truly. Although the Agnostida have long been classified among the orders of trilobites, because of a number of key differences, they are currently excluded and regarded as a closely related sister group to the polymeroid trilobites. In any event, the Agnostida will always be inextricably associated and studied in conjunction with the Trilobita. I'm very grateful to have the privilege to share this 'Lucky' Lotagnostus here at TFF! Taylor, J.F., Loch, J.D., Repetski, J.E. 2024 Taxonomy and Stratigraphic Distribution of Lotagnostus (Agnostida: Agnostidae) and Associated Trilobites and Conodonts in the Upper Cambrian (Furongian) of Laurentia. Zootaxa, 5422(1):1-66 PDF LINK
  9. I found this very hard and heavy petrified fossil? off a hill in a ravine by a natural spring on our property after clearing some land. It has kind of a porous exterior. Perhaps part of the head of the bone broke off partially over time? scapula? A rancher said it looks like a cow bone. It is so old and heavy I just don’t know if I buy that. Is it possible timing wise that it would be a fossilized cow or is it possibly prehistoric? Thank you for having a look. not sure of time period to look at.
  10. Looking to see if anyone is able to identify this as an Anomalocaris appendage? Measures approximately 60mm Middle Cambrian Latham Shale Marble Mountains, CA, USA Thanks in advance!
  11. Middle Cambrian, Jince (Czech Republic). There are three different fossils on the rock: trilobite Ellipsocephalus hoffi (whole), trilobite Ellipsocephalus hoffi (side fragment) and on the left side... What's on the left?
  12. L.S., Wanted to raise some awareness on TFF because I expect many here will simply love this: A good friend of mine, Iris van Zelst (geophysicist at the German Aerospace Center in Berlin) has developed this really nice card game centred around the geological time scale: QUARTETnary The gameplay is based on the classic game Quartets (similar to Go Fish and Happy Families), where players try to collect as many sets of four cards as they can. In QUARTETnary, each of the sets represents four major events that took place during a specific geological time period. To win the game, you need to create the most complete timeline of Earth history, all the way from its formation 4.567 billion years ago to the appearance of us humans. The cards have been designed by Lucia Perez-Diaz (Earth scientist and freelance illustrator from the UK). The illustrations look amazing and I really like that they adhered to the official colour scheme of the International Commission on Stratigraphy. Iris sent me this nice set of cards for the Proterozoic: The game includes 15 sets of four cards in total (many featuring fossils): one each for the Hadean, Archean and Proterozoic eons, and one each for the 12 periods of the Phanerozoic. I expect QUARTETnary will become a really fun way to learn about and memorize the different geological units and major events in Earth history. Kind regards, Tim
  13. aquaticrooster

    Possible bryozoa colony?

    I found this heavy triangular piece of what appears to be a bryozoa colony ,but at different angles and lighting I find it to show several other possibilities. This was retrieved from a receding river bed amongst many more corals and lingulla plates I also gathered. If anyone has an input or correction to my guess ,I greatly appreciate it.
  14. DardS8Br

    Yunnanozoon or something else?

    The longest one is roughly 2cm long. I’ve counted 12 on the rock, which itself is about 5cm long. All I know is that it’s from the Maotianshan shales in China. I was told it’s a Yunnanozoon, but I believe this is incorrect as the person I got it from is often wrong with their identifications.
  15. I am looking for Cambrian or Permian bivalves for my collection. Anyone have any to trade? Please PM me.
  16. 'Giant' predator worms more than half a billion years old discovered in North Greenland by University of Bristol, SciNews, January 2, 2023 The open access paper is: Tae-Yoon Park et al, A giant stem-group chaetognath, Science Advances (2024). DOI: 10.1126/sciadv.adi6678. Yorus, Paul H.
  17. I was invited to set up an educational booth at the Cranbrook Rock & Lapidary Club's Mineral, Fossil & Gem Show in October. It was a huge hit with the local collectors and members of the public. I was able to chat with a diversity of people ranging from families to fanatics and even some familiar faces from social media swung by to say hi. I am excited for the next event and will definitely be spending more time in Cranbrook. Such a welcoming community of fossil hunters and great number of Cambrian sites. Here are some photos of my table display. I wanted to spice things up and add fossils from around the world for this event as well as feature some of my current work.
  18. I went out to the Marble Mountains with my brother recently and checked out the area to find trilobites. I’m a novice and this was my first fossil hunting trip, however, I couldn’t really get to the site due to nearby roads being closed off. Before I go back and hike to the site, what are some advice you guys can give for fossil hunting in general? More specific advice for a site like the Marble Mountains would be greatly appreciated! I recently bought tools and hope to get more into paleontology! Thanks
  19. Raysun


    Found in Silver City New Mexico Greetings, I was looking to get an I D or more specifically a species. The entire specimen measures 10.71 cm x7.62 . It's the first find of it's kind for me.
  20. Dean Ruocco

    Mesonacis sp.

    From the album: Kinzers Formation.

    From the classic Brubaker quarry.
  21. bockryan

    Elrathia kingii

    From the album: Fossil Collection: DC Area and Beyond

    Elrathia kingii House Range, UT Wheeler Shale Middle Cambrian
  22. Hi TFF. I hope you can help me with this mystery. I found this unusual fossil at a rock shop in Northern California for only $15, so I figured I would grab it for that price and figure out what it is later. How hard could it be? I had the label and everything. Well, now it is home in New York and I think the label must have gotten switched because it looks like a mispelling of a trilobite. The fossil gives off crinoid or rhinocarid/phyllocarid vibes, but I just can't tell. Any ideas?
  23. Dean Ruocco

    Olenellus sp. mortality plate.

    From the album: Kinzers Formation.

    4 fairly complete Olenellus as well as a few partials. Kinzers Formation, Lancaster.
  24. Fissiletag

    Cambrian Harpetid

    I'm pretty certain that this is a cambrian Harpetid, but am not entirely sure. It's listed as a Palaeoharpes primigenius from the Sandu Formation.
  25. This morning, I decided to split some of my scrap material from the Quincy site where I have posted about a few times. At first, this piece split badly, but I decided to split it further, and a small piece of limonite stained shell revealed itself. I split it further, and this beauty popped out. Right now it doesn’t look very nice, but I was able to recover most of the shell. After some prep (which I am fully unable to do and would probably cost way more than the specimen), it would look a bit better than it does now. The anterior glabellar lobe is somewhat crushed, revealing what may be the outline of the hypostome. My hopes are certainly raised for what can turn up in this site in future.
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