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Showing results for tags 'cambrian'.
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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
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Perfect B. insolens, zero restoration.
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Hi everyone, just new for this fossil forum. Hope I could enhance the diversity of fossil species. So what we have here below are: left: the Chengjiang Biota Circocosmia jinningensis Hou & Sun, 1988 right up: Paleoscolecid from Fezouata Shale right down: Paleoscolecid from Guole Biota
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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.
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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
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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.
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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.
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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.
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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
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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
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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!
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From the album: Trilobites
Positive and negative. 17mm. A gift from Secret Santas Monica and Viola. Conasauga Formation Late Cambrian Rome, Georgia, USA -
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!
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Cambrian Stromatolite, looks just like the pics of Sharks Bay
SteveE posted a topic in General Fossil Discussion
Superficially, this beauty looks just like the pics of live ones from Shark's Bay, Australia. Central Pennyslvania, USA
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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?
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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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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
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Ammonites, Trilobites, Fossil Fish: Another Western Adventure
Jeffrey P posted a topic in Fossil Hunting Trips
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:
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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.
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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.
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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
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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
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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
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Spence Gulch site East of Liberty, ID — status
Wendell Ricketts posted a topic in Fossil Hunting Trips
I’m wondering if anyone has collected at the Spence Gulch site outside Liberty, Idaho, in the last year or so and would be kind enough to give me a status report. I have a chance to go before long, but random internet opinion seems pretty evenly divided between “great place, lots of fossils” and “bad quality rock, lots of work for little reward.” I’d be grateful for any help/info. Wendell -
Found near the original Burgess shale, this relative of anamalocaris probably fed in bottom sediments https://m.phys.org/news/2019-07-voracious-cambrian-predator-cambroraster-species.html
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