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Found 67 results

  1. trilobite anatomy

    here ACTA AD RES NATURAE ESTONICAE PERSCRÜTANDAS EDITA A SOCIETATE REBUS NATURAE INVESTIGANDIS IN ÜN1VERSITATE TARTUENSI CONST1TUTA I SER.: GEOLOGICA, CHEMICA ET PHYSICA VOL. XI, FASC. 1/2,1936 ÜBER DAS PANDERSCHE ORGAN BEI DEN ASAPHIDEN DES OSTBALTISCHEN ORDOVICIUMS VON p. siegfried,tartu about 94 MB "transliteration": On the Panderian Organ of East-Baltic Asaphids Sprache:Deutsch Langue:Allemand Language :German Starts from: PDF page 29 Some care with the taxonomy MIGHT be in order,given the age of the piece above:"schematical figurations of the undersides of right-side pleurae in the Ordovician Baltoc of Estonia"
  2. This is a relatively rare member of the marine (Essex) portion of the Mazon Creek deposit. Hesslerella shermani looks to the casual observer to be some type of shrimp. It is actually a marine isopod related to modern day pill bugs. One of the main features that differentiate it from a shrimp is that it lacks a carapace. Other distinguishing characteristics are a rounded head with large eyes. The legs are also similar in length. Hesslerella is one of the smallest crustaceans found in the Mazon Creek deposit. They average around 2 centimeters or less in body length. At the time Hesslerella was described (Schram 1970), it was the earliest known isopod in the fossil record.
  3. Hello forum folks I went to DSR again yesterday 10/05/19 as I had another free day to go collecting. I may not being able to fossil hunt until the end of the month so I had to take advantage! I have been noticing the phyllocarids are coming from certain intervals lower in the quarry...could be nothing....could be somthing....before I assumed I figured I should test it. I knew the exact bedding plane my last Echinocaris came from so I planned on opening a shelf on that bedding plane. My thought was if I could find another phyllocarid on that bedding plane maybe it could mean something....clearly not enough data to make any final assumptions but heck who wouldn’t dig a bedding plane that has produced lol. I was still specifically upset I couldn’t find the missing piece to my phyllocarid from last trip so I did some scanning I initially. I knew it was a waste so I got to work on the bedding plane I desired. before I got started I moved a lot of over burden and got some nice slabs moving. Loving the wedge and sledge combo....so much easier on my body physically. anyway....I found this Echinocaris punctata about 30 minutes into clearing off the shelf. Same bedding plane!!! Only about 1-2 feet from the one I found last trip. Bingo!! I’m going to show a few close ups...this is a really interesting specimen. It appears to be A double carapace folded in half. You can see the margins of the other half and some spots actually fold over slightly that confirm this. It would be great to reveal the other side but I would have a very thin, flattened, fragil specimen. also.....I’m feeling like the boy who cried wolf here but are these mandibles I see on the top left part of the specimen (Seen below)? The margins aren’t as easy to see but it’s clear there are some type or serrations on each part. Here is a close up that does a decent job showing what I’m talking about. They are really non photogenic because of the rust on the shale between the mandibles. It messes with the margins visually. It was still really messy with debris/rubble when I found it so I wasn’t sure where the counterpart was under the rubble. Foolishly it’s on a slab I left behind and I’m going to try and rush out after work to grab it this week. I found this another foot away from the phyllocarid above. When I found this I immediately thought I had a rhinocaris phyllocarid but now I’m not so sure? Unless someone can say for sure. Just doesn’t look right. here is a close up.....it has some lines running across it that make me question what this is. So for now I’m not sure. I found this Rhinocaris sitting out in the open so I have no idea what layer it came from. I’m positive this is a Rhinocaris and it’s very different from the other unknown specimen I found. Here is a reference photo for people who are unsure what phyllocarids are. I really think this specimen is special like the one I found last trip. Also, I do find it interesting that this was on the same bedding plane and very close to the last Echinocaris phyllocarid. More field work will help tell the tale. More to come....my trilobite finds from DSR and I found a layer with all Eldredgeops!!! Really awesome. Stay tuned for part 2
  4. Fossil identification

    Hi I found this fossil in Golden, BC and I can't identify it. I brought it to a BC Paleontological Alliance show today and all they could tell me was that it's an arthropod (probably from the Ordovician) Any tips are appreciated. Thanks
  5. Insect Plant Fish or ...?

    Greetings, everyone. I spent the other day on the east side of Ventura County breaking open sedimentary rocks. I'm not experienced enough with that sort of material to positively ID it but I think it was siltstone. There was a leaf and something else on both sides of one of the rocks. I've been having a hard time figuring out what the "something else" is. It measures about 35 by 14 millimeters. I took a few pictures of both sides under different lighting conditions to help bring out some of the finer details. It comes from the Modelo Formation (Miocene). Thanks ahead of time for any help in figuring out what it is. Here are pictures of the first side: Some pictures of the second side:
  6. Some maritime slab?

    I found this sandstone slab on our property in south west Colorado, near Placerville, and was struck by the spider like creature especially. There also seems to be a mollusk nearby this creature. But its legs would have been so fragile, hard to imagine how it could be a fossil. But it doesn't seem like just a random shape to me. Any thoughts? I had to reduce the pictures quite a bit to fit size requirements here.
  7. Help with easy Trilobite ID

    Hello all, I am a new member here and haven’t searched for fossils for 50 years, when I was 14 years old living in upstate New York. Currently on a trip to Newfoundland with my wife while visiting a friend in Harcourt, NL just 15 miles East of Clarenville I started digging and opening shale rocks in his backyard. I found a few smaller items that were non identifiable fossils but when I opened this one I knew immediately from my teenage years it was a trilobite but after googling I soon discovered there are many many varieties and periods which led me to this forum. I’m thinking this will be an easy one for many of you and save me Many hours of questions. Hope my images come through ok as ok as we are still on the road and I’m doing this with my phone and iPad. Thanks in advance for your help. Rick location found: Harcourt, NL approximately 500 feet from Smith’s Sound Its 2” in length if I don’t get the image with tape Measure loaded aqua blue shale
  8. Arthropod ID in Baltic Amber

    This past month I was at Latvia and Lithuania for ten nights, investigating their amber industries. Among other specimens, I bought this large polished nodule of transparent Baltic amber, that was reputed to have a "tiny spider" inclusion. I found and photographed a very small arthropod—but since I cannot count body parts and legs, I cannot say it's a spider. The purchase took place in Riga, Latvia; though I was informed that a great deal of available amber comes from Kaliningrad in the former-USSR. Jamey D. Allen - Bead Historian
  9. Just found this juvenile Eurypterid a couple hours ago....went rubble picking today in the Silurian waterlimes. I got very lucky....like 1 in 10 years of searching lucky. Time to get some lottery tickets! All kidding aside....I’m floored....super happy. I’ve been trying to find a nice Eurypterid for years ever since my first hunt in 2010-11. It’s about 1.5 inches. Juvenile for sure. It has walking legs and the swimming paddle on the left side. The right walking legs and paddle could be present but I’m too afraid to touch it. Here is a raw shot from the field. After a cleaning and application of a thin thin layer of washable Elmer’s glue and water to make it pop more. Picture with a scale. I also found this quality prosoma. I did find 2 other partial prosomas, body segments, a telson (mostly covered), a mouth plate with nice teeth, and I took home a few chucks of the Phelps member to freeze thaw. Never know right?! All my finds are in rubble so I might as well bring some rubble home haha. That’s all, just really excited..... Al
  10. Found this sandstone shale rock with possible insect fossil in the State Park.
  11. Hey everyone, I had an entire free afternoon yesterday so made my way out to DSR and Briggs rd. I haven’t been out there since the group hunt and I was curious to see if I could find pickings to split. I did a good amount of slab tossing and I know others did as well. People also got some newer areas going also and I was curious if I could work off those too. I started the day at Briggs rd because I did so well last time I was there. I was drooling for a 2nd shot! I didn’t find anything top shelf worthy but I did seem to stumble on more dipleura than I did the last couple visits. These are the total spoils from Briggs rd. I don’t know how common dipleura is at Briggs or if they ever come complete but these are my best dipleura so far from Briggs rd. They sure don’t show up like the Eldredgeops lol. I just liked this cephalon lol. All alone popping out it the rock with great detail!! Basically I got a bunch of stuff like this. I did a ton of labor moving over burden so that perhaps in the future I can keep expanding the shelf I started. Kinda rough on the back but this overburden doesn’t remove itself! After a few hours I moved onto DSR to see what was left behind for me to find . With all the action at DSR with the group hunt something was bound to get missed!! I forgot to take pictures of the site when I was at DSR so all I have are the final spoils and some close ups of my favorite finds. DSR spoils I wasn’t at DSR as long cause I was so tired and worn out from Briggs rd so I didn’t do much slab removal or excavating. I spent most my time scouring over others discard piles looking for hidden gems! And gems I did find!!! I found this dipleura looking through some blocks that were pulled off the upper layer of the quarry. Dipleura tends to show up more in the upper strata. It’s missing the pygidium and the cephalon is tucked over. With some minor prep I should be able to expose the rest of the cephalon. Super happy about this find. In general I have been coming up empty with dipleura at both Briggs rd and DSR so it was a bonus. Last but not least....... Echinocaris punctata phyllocarid!!!! I found this just sitting out in the open face up. Most likely mistaken for a bivalve. I couldn’t believe it. My best phyllocarid carapace so far. It’s nearly perfect!!! I have to say this beats all my other finds for the day. Just sitting face up for me to find . Well that wraps it up. Fun time at Briggs rd and DSR with a couple exciting finds for me. Seems like every time I go out I comeback with something totally unexpected!! It just keeps me coming back for more . Hope everyone has a great mother’s day! Thanks for reading, Al
  12. Is this a trilobite?

    I am wondering if this sample is a trilobite. The second pic contains an additional sample. Both taken from the same rock.
  13. Pre/Cambrian Collection

    I have always been quite fascinated with the early stages of development of life on Earth. My interest really picked up when I first discovered the Ediacaran biota, and who can blame me. Those creatures are so enigmatic and fascinating. I was able to pick up a few specimens, but quickly realized that my desire for fossils greatly outweighed the supply and cost of Ediacaran fossils, and I soon discovered the equally fascinating and enigmatic Lower Cambrian Chengjiang biota. I was, and still am, blown away at the quality of preservation of these soft bodied critters. A lot of specimens come very shoddily or incompletely prepared, and while it's been a steep learning curve, I feel that I'm starting to get the hang of prepping them. I've decided to start posting my latest acquisitions as these fossils are too amazing not to share. First up is Cricocosmia jinningensis, a fairly common palaeoscolecid worm from the Chengjiang biota. I have several specimens but this one is the best. It came partially prepped and I am just now satisfied with the result. You can see remnants of the gut preserved as darker regions in the center of the body. Next up is a small hash plate of Bohemiella romingeri brachiopods from the Middle Cambrian of the Czech Republic. Not my usual purchase, but I felt the specimen was too beautiful to pass up.
  14. Mystery Arthropod?

    Found on a beach in Scotland. Matrix appears to be volcanic. Any clues?
  15. What could this be? Just a rock or a fossil as i have theorized. My guess is that it could be a kind of marine fossilized arthropod, with fossilized inner organs, i know it is not very common but thats what makes more.sense to me. . It was found in the rivershore in Bilbao, in lower cretaceous sediments, i found some sea-urchin fossils there too. . Thanks a lot!
  16. Sometimes the name just fits

    I made another day at my favorite hunting site. A cold and wet day. Didnt score anything really noticable, but this fat boy : Ectillaenus giganteus, who is actually "giganteus", complete and not that streched !
  17. North Sulfur River Insect/Arthropod?

    I was out at the North Sulfur River on Saturday. I found a number of cool things. This one is a mystery to me, but it seems very rare and pretty neat. I’m not sure it’s even really identifiable as to a class or order, but I thought I’d ask. It needs more prep, but I’m not sure how much more there is to uncover. Above you can see what look like 2 legs hanging down and possibly One on op. Below is the same thing invented. Another pic from a different angle. I can’t get any closer on the small details. I can see the texture of what I believe may be legs on the bottom of pic 1, but they aren’t crustacean legs. I guess they could be antennas, but I’m not sure antennas are segmented like that. If you look at what appears to be an appendage on the top it does have bumps on it. Any thoughts?
  18. Hello! As a typical New York fossil hunter I have always had a special interest in Trilobites and Eurypterids. When I was in my undergrad in Buffalo I was able to get my hands on load of trilos but eurypterids were seemingly not available anymore outside of Lang’s quarry. I have found some luck at a roadcut in Litchfield, New York and these are the pictures I will share. It’s a very difficult place to dig honestly and I’m lucky to have a half decent little Eurypterid. I really want to dig Ridgemount quarry. I hear people still go there but I’m not really sure how to go about it. In conclusion, here are my Litchfield NY finds! Al
  19. Palaeopalaemon newberryi Chagrin shale Devonian Northeast Ohio, USA Specimens were used in the publication “Morphology and paleoecology of the oldest lobster-like decapod, Palaeopalaemon newberryi Whitfield, 1880”, Journal of Crustacean Biology (2018). Smithsonian USNM (United States National Museum of Natural History, Washington, DC, USA). USNM numbers 617309 617308 617309 618374 706118 Morphology and paleoecology of the oldest lobster-like decapod, Palaeopalaemon newberryi .pdf PP letter of provenance.pdf
  20. This looks arthropod, but what is it?

    This specimen is from the Pennsylvanian subsystem, Kansas City group, and probably the Winterset member. I say probably because I collected it several years ago and I'm not sure. If it is not from Winterset, then it is from a some other nearby member in the Kansas City Group. It seems that the only arthropods in the Winterset are trilobytes, so I'm thinking that this is not arthropod, even though it has that superficial appearance. Can you folks help me identify it?
  21. What kind of arthropods are these?

    What do you think these are? Sorry, this is the only picture, and there is literally 0 information, so just your best thoughts from what you see here. I'll update any info if I can.
  22. Joeranina2.jpg

    From the album Cretaceous Vancouver Island

    Joeranina platys Haslam Formation (Upper Santonian - Lower Campanian) Saanich Peninsula, Vancouver Island, British Columbia
  23. crab 3.jpg

    From the album Cretaceous Vancouver Island

    ?Bicornisranina bocki? Haslam Formation (Upper Santonian - Lower Campanian) Saanich Peninsula, Vancouver Island, British Columbia
  24. crab comp 2.jpg

    From the album Cretaceous Vancouver Island

    Joeranina platys Haslam Formation (Upper Santonian - Lower Campanian) Saanich Peninsula, Vancouver Island, British Columbia
  25. Palaeopalaemon newberryi Chagrin shale Devonian Northeast Ohio, USA Specimens were used in the publication “Morphology and paleoecology of the oldest lobster-like decapod, Palaeopalaemon newberryi Whitfield, 1880”, Journal of Crustacean Biology (2018). Smithsonian USNM (United States National Museum of Natural History, Washington, DC, USA). USNM numbers 617309 617308 617309 618374 706118 Morphology and paleoecology of the oldest lobster-like decapod, Palaeopalaemon newberryi .pdf PP write upx.pdf
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