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Showing results for tags 'Triarthrus'.
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Ventrally preserved. Both genal spines and one thoracic spine are present. Hyostome slightly visible. Found associated with T. eatoni, T. rougensis, cephalopods and graptolites.
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- billings formation
- billings shale
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Hey everyone, I wanted to show this fossil I found back in November as I think it's pretty cool. On my first trip that involved splitting shale, I found this Triarthrus cephalon, which is cool on it's own but it was only later that I looked back to it and realized the particular shape that resides on top of and below the cephalon. This trilobite appears to have been buried with the shell of a nautiloid! Please excuse if it's hard to see, the first few pictures were really difficult to get and my phone isn't the best at taking close up shots as it is. The 1st and second pictures represent the two halves of the piece, while the 3rd and 4th pictures are the same thing with a rough tracing of where the shell is. The 5th picture is an older picture I came across while making this post that while blurry shows the shaping somewhat decently. So yeah, there's a pretty cool find in my collection, I don't know how rare this kind of thing is or how they ended up together but I think it's really fascinating anyway!
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I was examining a rock with some crinoids and bryozoans I found in my garage a couple months back, and I was able to find this very small trilobite. It looks to me from my research to be a Triarthrus, but I'm still a little unsure on the species. I'm leaning towards eatoni, though I'm not 100% sure. Apologies that the photos aren't the best, but the thing is really small and I don't have the best macro camera. One more note is that I'm aware Triarthrus eatoni isn't found in my area, but I don't know exactly where this rock came from. If I can find the species hopefully I'll be able to get that information.
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From the album: Nautiloid’s Trilobite Collection
This specimen of the iconic Utica Shale species is almost complete, lacking just the left librigena. Eventually I’ll probably prep it/get it prepped. Acquired from an old collection.© Owen Yonkin 2022
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- ordovician
- triarthrus
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Hello everyone! I have been wanting to collect the Utica Shale for a while, so yesterday I decided to go check out a pretty popular locality along a creek near the town of Little Falls. It was super hot out so I couldn’t stay for very long, but I managed to find some pretty interesting things.
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- central ny
- ordovician
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Found these in mid June 2022 in broken up shale on the bank of Nowadaga Creek in east-central New York. The cephalon head was found 1 foot away from that body. To make the image “pop”, I doused a rag with a few drops of mineral oil and gently rubbed it on the shale. Unsure what the actual trilobite species is. Triarthrus eatoni, beckii, other?
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- nowadaga creek
- triarthrus
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Greetings everyone! Today I had the very special opportunity to collect in the Whetstone Gulf formation at Martin Quarry. I had a really great time and I just wanted to share some of my finds with you fine fossil forum folks! Enjoy
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From the album: Fossils of the Upper Ordovician Lorraine Group in New York
Triarthrus eatoni Upper Ordovician Whetstone Gulf Fm. Lorraine Gr. Jefferson County, New York Collected 11/11/19 -
Whetstone gulf & Pulaski formations in northwestern NY
Nautiloid posted a topic in Fossil Hunting Trips
Last fall I went on a fossil hunting trip to a creek in Adams, NY. Along this creek were exposures of the Whetstone Gulf and Pulaski formations. There were many different layers, each with different fauna. Some layers were barren, while others had many species. Some of the most common fossils were cryptolithus and triarthrus trilobites, as well as brachiopods, bivalves, gastropods, ostracods, and straight shelled nautiloids. Some layers contained pyrite and some of the fossils in these layers were partially pyritized. (Including some of the trilobites!!).- 12 replies
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- cryptolithus
- late ordovician
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Article on pyritized trilobites of Beecher's beds. Worth looking at the pictures even if you don't read the article. The best picture is of a non-trilobite arthropod. https://www.atlasobscura.com/articles/pyrite-trilobites-upstate-new-york
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- beecher beds
- pyritization
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Hello everyone! I’ll be doing a few posts here and there named “rediscovering New York”. Ive been doing a lot of research recently and I had massive geologic maps printed out from office max a couple months back. They are a very valuable tool. I’ve been finding a lot of potential sites from them and I may post what I find but not necessarily post the actual locality for reasons that anyone can stroll onto the forum and extract information. Since I’m in central New York...Utica, New York to be exact I started doing some searching in my own hometown. Triarthrus is known to many collectors in New York. The Utica shale has some nice exposures in the Little Falls, NY area that collectors have posted about many times on the forum. I had a feeling I could find some to the west in my hometown. Before I went to school for geology me and some friends were wandering around in the woods behind his backyard he took us to the “gorge”. All I really remember were sequences of black shale. This was at least 15 years ago. Somehow the memory came flying back to me while doing research. I had forgotten this memory for years and years. Last Friday night (day before I found that Eurypterid!! Lol) I was determined to have a look. I went to a local park adjacent to the stream in question and took a walk. It wasn’t long before I saw another hiker...... and promise The Utica shale!! This must be a different sequence than what’s found in Little Falls cause this shale seemed different from my samples to the east. I found this not long into the hike!! This was really exciting. First confirmed local trilobite in some time I presume. I don’t even know if these have ever been documented here. I have a handful of papers on the Ordovician sequences and even some specific to the Utica shale and I haven’t seen this locality reported. I also have a limited access to scholarly articles so that may be a reason too. Seeing this in a weathered block I assumed I needed to keep going up stream. I sadly destroyed this trilobite trying to reduce the block....it was heartbreaking but I knew I could find more if I found that. The march continued! I decided to try and find something “in situ”. In my past experience the Utica shales can be barren then you start seeing bits sometimes. I had to assume something was around in these shales. Then I found this negative of a complete Triarthrus. The actual trilobite washed away ugh...This was in situ and also proved they came from the local bedrock found under my feet. This was still a very exciting find for me. I took it home as proof of concept. Got it out in 2 clean pieces luckily. further down stream I found this 3/4 specimen in a block. This time I didn’t destroy the prize. This made up for the first blunder. cephalopod. Poor preservation. Found a decent cephalon in a weathered block. Got it out clean. heres a close up. In conclusion....I really need to go back and hike further. Upstream the sequence appears to open up again into some vertical walls but it’s far upstream. I need more than a Friday night to do the hike! This area is weird and appears to be used by snowmobilers and 4 wheelers depending on the season. There are trails all around so I have no clue what the land status is. It appears locals see it as a little known, little used parcel of land sandwiched between dozens of backyards. One of my other fiends that used to live in that area had a snowmobile trail going right to his own backyard. Anyway, this was a very interesting development for me. A milestone for sure. I hope I can go back and find a decent specimen. Just need to find the time to make the hike. I have so many places on my list to visit! Thanks for reading, Al
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- ordovician
- triarthrus
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Last year I got a call from my friend Gary. I have collected with him a few times and I have volunteered to help him with educational activities that he runs for middle and high schoolers many times over the years. He was wondering if I could go on a paid dig with him to a quarry near Rome, NY famous for triarthrus trilobites with soft tissues preserved. The deal was we each pay a fixed price, but we get to keep up to five trilobites each. Prepping could be provided for an additional fee. Other fossils we find were free to keep, but the dig owner reserved the right to keep exceptionally large or rare finds. After finding out more about the quarry and realizing it was home to the "gold bugs" I committed to go. It took about 3 or 4 months before Gary, the quarry owner and I finally were able to coordinate an open date to go, but that just made the anticipation build even more. We drove the 260 miles and met up in a pre-arranged parking lot. The quarry owner is a famous fossil hunter and now makes his living purely finding, prepping, buying and selling fossils. Despite that he has donated many prize fossils to museums and universities including new species and has been included on several academic papers such as this one. We'll call him Mr. M. (M for mysterious) We got to the quarry and unloaded our tools. Mr. M was a fountain of information about trilobites. The history of the quarry is fascinating all by itself as well. A quick Google of Beecher's trilobite beds will give you plenty of additional data about the place and the history behind it. This is the section that Walcott dug in before he later discovered the Burgess Shale. So, after a quick geology lesson we got to work. Gary found a beautiful example within 5 Minutes of starting, and he was up to about 4 before I found my first one 3 hour later. But I had paid the blood price to the fossil gods with the sharp shale. So I was rewarded with trilobites!!! I have a lot more to show, but it will have to wait for later.
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- new york
- soft tissue preservation
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Found associated with T. rougensis, T. spinosus, brachiopods, cephalopods, and graptolites. Included in multi plate alongside eight other complete or near complete T. eatoni.
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Included in multi plate alongside eight other complete or near complete T. eatoni. Found in association with T. rougensis, T. spinosus, Brachiopods, Cephalopods, and Graptolites. The Cephalon is slightly disarticulated, likely from molting.
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- billings formation
- billings shale
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Found associated with T. rougensis, T. spinosus, brachiopods, cephalopods, and graptolites. Included in multi plate alongside three other T. eatoni and one T. rougensis. Both eyes are preserved.
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Both genal spines are present. Right side of cephalon is slightly pyritized. Found associated with T. spinosus, T. eatoni, cephalopods, and graptolites.
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- billings formation
- billings shale
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Found associated with T. eatoni, T. rougensis, cephalopods, and graptolites. Impression of right genal spine is present. Right side of cephalon is slightly pyritized.
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Hello again! This post will be about some beautifully preserved Triarthrus fossils (and my first complete Trilobite finds). Some of them even have the eyes preserved! I found these at a local train station, and the site of significant construction lately. I believe most of the to be E. eotoni, and the last one to be E. rougensis or spinosus. It may not be visible in the picture, but the last one has a streak of pyrite along the side of its cephalon / upper thorax. Could this be some kind of soft body tissue preservation, similar to those of the Beecher's Trilobite bed?
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- billings formation
- billings shale
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My family and I went on a cruise in December and my 10 year old dragged me to the watercolor painting lessons during the "at-sea" days. I got hooked on painting, she didn't...Anyway, these are my first attempts at combining two of my hobbies.
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Found this on a Lake Champlain beach, looks like a fern but any info would be great!
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From the album: Fossil Collection
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From the album: Fossil Collection
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I found this trilobite in Little Falls, NY. It's about an inch long. I love the color and the fairly good preservation caused by the pyrite. It looks like there is some very thin shale covering parts of it and I want to remove these pieces. The problem is that I don't know how to do this without scratching or ruining the fossil. I only have a small set of dental picks available to use. Any help or recommendations on what tools to get if I need anything would be appreciated.
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On a recent trip up to Little Falls, I somehow managed to spot this little guy while going through some scraps of shale. It isn't excellently preserved or anything and it's only an impression of a cephalon but what surprised me was the size of it. It's less than 4 millimeters wide and that's stretching it. It's certainly the smallest Triarthrus I've seen. Sorry for the poor quality, this is as good as I can get through a microscope.
