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Found 364 results

  1. Yesterday I traveled to vintage pa in the hopes of finding Cambrian fossils or more specifically Anomalocaris fossils which had been found in a former quarry nearby and in the same formation I was hunting. I went to an outcropping of the kinzers formation that I saw on the Wikipedia Image that I have attached, but after an hour of splitting rocks I didn’t find anything recognizable. I was hoping someone knew if I was doing something wrong or if it was just not a good spot? thanks, Noel
  2. Help request! I am putting together a tool for judging rock age based on very crude, whole-rock, hand-sample observations of fossil faunas/floras -- the types of observations a child or beginner could successfully make. I view this as a complement to the very fine, species-level identifications commonly employed as index fossils for individual stages, biozones, etc. Attached is what I've got so far, but I can clearly use help with corals, mollusks, plants, vertebrates, ichnofossils, and the post-Paleozoic In the attached file, vibrant orange indicates times in earth history to commonly observe the item of interest; paler orange indicates times in earth history to less commonly observe the item of interest. White indicates very little to no practical probability of observing the item of interest. Please keep in mind that the listed indicators are things like “conspicuous horn corals,” purposefully declining to address rare encounters with groups of low preservation potential, low recognizability, etc. Got additions/amendments, especially for the groups mentioned above? Toss them in the comments below! Thank you..... https://docs.google.com/spreadsheets/d/1tVm_u6v573V4NACrdebb_1OsBEAz60dS1m4pCTckgyA
  3. Archotuba sp. (7cm) Anomalocaris frontal appendage (size: 3cm) Tuzoia retifera Walcott, 1912 Isoxy auritus Tuzoia sinensis Pan, 1957 (size: 4cm)
  4. What is this Cambrian appendage?

    I believe it’s a feeding appendage. I’ve been told it’s an anomalocaradid feeding appendage, but i don’t remember any of the anoms iv seen having anything quite like that. I can’t remember ever seeing it in context, although feeding appendage definitely seems right.
  5. Some trilobites I have from Guanshan Biota: Breviredlichia granulosa Undescribed Redlichia sp. Juvenile R. yunnanensis A pair of unpreped B. granulosa.
  6. Two of my weeks formation trilobites, will show more in a few days. Order.: PTYCHOPARIIDA Family.: LLANOASPIDIDAE Gen.: Genevievella, LOCHMAN, 1936 Rare trilobite with a large characteristic spine starting from the 7th axial ring. LINK: http://www.backtothepast.com.mx/ebonino/html/weeks_trilobites_1.html#Genevievella
  7. 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
  8. 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.
  9. 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
  10. 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.
  11. 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.
  12. 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.
  13. 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
  14. 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
  15. 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!
  16. 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
  17. 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!
  18. Superficially, this beauty looks just like the pics of live ones from Shark's Bay, Australia. Central Pennyslvania, USA
  19. 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?
  20. 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
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