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Found 381 results

  1. Since last year, I was starting hunting down all types of Bristolia genus. I am so fascinating about its shape. Here represents all the species I have acquired: Bristolia bristolensis (Resser 1928) Types: USNM 78390, the lectotype (defined in Palmer and Repina 1993); paralectotypes USNM 78391 and 78392. Bristolia bristolensis had originally been recognized (e.g., Riccio 1952; Palmer and Halley 1979; Palmer and Repina 1993) as a highly variable species, particularly in the condition of the intergenal and genal spine angles. However, Lieberman (1998) used univariate measurements and statistical analyses to define a well-constrained B. bristolensis based on Resser’s (1928) lectotype, and demonstrated that what had traditionally been treated as a broadly variable B. bristolensis was actually two different species. The species referred to as Bristolia n. sp. in Lieberman (1998) is described here as B. harringtoni n. sp. Bristolia bristolensis has the intergenal angle deflected at an 80 to 95 degree angle relative to a transverse line and the genal spine angle is variably developed opposite and/or between the distal tips of S2 and S3. In B. harringtoni the intergenal angle is deflected at a 50 to 65 degree angle relative to a transverse line and the genal spine angle is developed variably opposite the distal tip of S2 or the medial part of L1. Occurrence: California: the Carrara Formation, in the lower Bristolia zonule, upper part of the Olenellus zone, Early Cambrian, following Nelson (1976) and Palmer and Halley (1979), in the Grapevine, Funeral and Resting Spring ranges, the White-Inyo/Death Valley region, and in the Latham Shale, Marble Mountains, 190 m W of the limestone quarry, 0.5 mi E of Cadiz, in the Mojave Desert portion of San Bernardino County, possibly equivalent to Hazzard’s (1933) locality M-5, treated as in the Bristolia zonule. The above content comes from paper: Systematic Revision of the Olenelloidea (Trilobita, Cambrian) Bulletin 5 of the Peabody Museum of Natural History Yale University 18 October 1999 New Haven, Connecticut Bristolia Insolens (Resser, 1928) Bristolia cf. parryi
  2. Trilobite ID help

    Hello folks. I am considering a purchase and would like to know it this fossil is as described. It listed as Remopleurides species trilobite? It's from Jingxi, China.
  3. Agnostid or larva?

    Hello again, still going back through my neglected trilobites. This one I had labeled in my mind as Elrathia+ Agnostid fragment. After learning a little more about trilobite ontogeny (https://www.trilobites.info/ontogeny.htm) I wonder if the partial agnostid may rather be a larva of Elrathia? Or can I rule that out by size? I hope the "adult" is sufficient for scale comparison. The more you learn the less you know. Best Regards, J
  4. Just wanted to share one of my favorite Moroccan trilobite plates. There are two trilobites on this plate and it came with both the positive and negative halfs. These are Cambropallas telesto from the Cambrian age. The actual trilobites measure 3.9 and 3.6 inches. They were found at Toughach, Alnif, Morocco. The plates were cracked but there is no restoration. Hope you enjoy.
  5. China Trilobite ID request #1

    Hello folks. I've been digging through my "unidentified" draw again and came across eight Trilobite requiring identification. I cannot seem to locate my documentation, so, I am humbly requesting your help once again. The information I do have on this Trilobite is it comes from Yunnan, China and is from the Cambrian period. It measures 25mm x 17mm.
  6. Missouri Cambrian

    Just wanted to share this lovely old shell i had the pleasure of luck to find. It has been identified as taneospira emenensis from the eminence formation of Missouri upper Cambrian. I hope you enjoy seeing it. Happy hunting.
  7. Identification

    Hello everyone, I working in dimension stone field in Armenia. This fossils where found in a sample small stone block brought for cutting to the factory, then they were machined polished as standard marble or granite tile. The tile (second photo) is 400x800mm app.16x32 inch. Kindly help me to identify these guys. Thanks
  8. Hi all, i want to buy that Cambropallas Telesto. It seems a good specimen, i can see rock cracks passing thru the trilo so is a good sign. But i'm not sure about the entire specimen, in particular in the black areas in the back. Seems that the "shell" have been eroded. What do you think? Thank you
  9. Trilobite ID help

    Do any of our trilobite experts know what this pygidium belongs to? It's Cambrian from Jingxi, Guangxi, China. It's incomplete measurements are 25 x 27mm. Help!
  10. Aphelaspis brachyphasis (Palmer 1962)

    From the album Trilobites

    Positive and negative. 17mm. A gift from Secret Santas Monica and Viola. Conasauga Formation Late Cambrian Rome, Georgia, USA
  11. Cambrian Trilobite ID

    Below is a Trilobite fossil from the Arthur Creek Formation (middle Cambrian) I found some months ago. This formation is located in the Southern Georgina Basin in Central Australia, in a remote location between Northern Territory and Queensland. I hadn't attempted preparing a fossil before and decided to finally give it a try. I wanted to see if the Cephalon was present and still intact and if I could carefully uncover it. I'm quite pleased with how it turned out, as the fossil is comprised of a very dense sandstone and I was told it could be a challenge. Now I have it fully uncovered I wanted to see if anyone could help with identification. From the reading I've done I'm thinking it's Xystridura Templetonensis. The two circular sections either side of the Glabella, which itself is quite circular line up with other examples I see of Templetonensis. I find it hard to get an accurate thorax segment count, but I believe I see 13, which would also line up with what I thought. Thanks for any help!
  12. Superficially, this beauty looks just like the pics of live ones from Shark's Bay, Australia. Central Pennyslvania, USA
  13. Cambrian Trilobite Unknown

    A few weeks ago, we took a little drive through the rolling hills of SW Wisconsin. I had to occasionally pull over at some road cuts and stretch my legs. While stretching, why not look for fossils! Here is a pygidium that I can't identify from that trip. It is 5 to 10 times larger than other pygidiums that I normally find in the Eau Claire Formation of the Cambrian Period. Any thoughts?
  14. Hello to all! I have recently won the rolling auction here on the forum, and one of the items included was a Cambrian panlongia from China. I understand that the two species of Panlongia can be distinguished by the presence of spines along the sides of the thorax but I really can't tell on this piece, so if there is any other way to know which it is I would love to hear it! At the same time the same piece of matrix features something else right next to it, I am not sure what it is, could it be a brachiopod? And when flipped over there is another fossil looking object below it, is this some kind of ichnofossil or something else? Thank you very much, Misha
  15. Trip to Sweden

    Today I would like to describe my trip to Sweden. Since I visited several locations, it’s going to be quite long – but I hope reading my report is going to be interesting enough for you to last until its end . I include only a few pictures of fossils from each location, because I’m still in the process of splitting the rocks I brought with me. First a few general impressions about Sweden – it’s a super super green and clean country, with lots of beautiful natural reserves and naturally – fossil sites. I was hoping the weather in September would be still good enough to do some fossil hunting and outdoor sightseeing, and we were really lucky, because although the temperature dropped a few times below 10 C, at least it didn’t rain We took the ferry from Świnoujście to Ystad and from there I went to the first location – Brantevik. There is the place where the boundary between the Cambrian and Ordovician is located, so on the beach you can find rocks with fossils from both periods. The location looks like this: And here are some of the finds: The next site was actually the “youngest” among all the locations I visited – it was Ignaberga, an open-pit Cretaceous quarry. I guess it is still operating, but fortunately I was there on Sunday, so nobody was there. It is very easily accessible – and the slopes are literally covered with brachiopods
  16. Barely a month had gone by since my last trip to New Mexico and Colorado, but I already had plans for this trip in the works. Primary focus this time, which was a solo trip, was fossil collecting, visiting well known sites that have been on my radar for quite some time. I flew out to Salt Lake City and drove directly to Kemmerer, WY. My first stop there was Fossil Butte National Monument: Here is a view of the visitors center (free admission) and the surrounding barren, but awesome landscape that surrounds it:
  17. Thought I would share some specimens from my recent trip to the Mt Scott Range, near the town of Leigh Creek and about 540 km north of the city of Adelaide. These Arachaeocyatha can be found just beside the main road and are from the Ajax Limestone, of Lower Cambrian age (528 Ma). I am not able to indentify genera or species but many types are represented. Best way to see them is to either find a sample that has been naturally weathered, which shows up the structure in relief, or cut and polish sections. The last photo shows a longitudinal section of one showing both the double wall structure of the caylyx and also the attachemnt holdfast.
  18. Hey hi Y'all, Was looking at some of My trilobites from My last trip to the House range and found something that is not a trilobite. Wheeler shale, mid cambrian. Any help to make an ID on this thing is always appreciated. Thanks. It is 1 cm long.
  19. Percentage original?

    Hello, I am wanting to purchase this Andalusiana trilobite. It is 9 inches long, positive and negative. I know these are commonly heavily restored or completely fabricated. I also know judging fabrication by a picture can be very difficult. I was wondering if anyone could given me an approximate percentage of how much of this trilobite is original fossil. They are asking ... for this piece and was wondering if this is a fair valuation. Thank you
  20. Hello everyone, I was able to make a run down to the Conasauga River trilobite hunting site yesterday that was suggested to me in another thread. I didn't have an overabundance of time, but within five minutes of arriving, I found the specimen in the attached photo. It's not perfect, but it's the first time I've ever found a fossil out in the wild. Thank you to everyone for pointing me in the right direction. Now, since my time was a bit limited, I collected a five gallon bucket of the mudstone found there to look through it later. Now, some pieces seem easier to split than others. I've read on here that some people will soak items like this in water for about 15 minutes before attempting to take it apart. Does that sound right? I just want to have a chance at finding something else and minimize the risk of ruining a fossil in my quest to find one. Thank you, -William
  21. Hi all, My girlfriend and I are planning a trip to New York State sometime in September, and although her main motive might be shopping, mine is - you guessed it - fossils! Does anyone know of a place on could find Olenellus or Elliptocephala in New York? I know they can be found around Albany, but I can't find any obvious outcrops... Aside from where to find Lower Cambrian trilobites, any other suggestions regarding great fossil outcrops in eastern New York are much appreciated! Cheers, Marc
  22. Fossil News Summer 19 issue is available

    The Summer 2019 issue of Fossil News features the paleoart of Jimi Catanzaro, an article about late-Cretaceous pterosaurs in Cuba, more on that ammonite in amber you've been hearing so much about, an exclusive excerpt from Enrico Bonino’s new book about fossil medusozoans and how primitive algal mats helped preserve them, and a whole lot more! tinyurl.com/fnsubscribe