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Found 231 results

  1. I was sent to Dallas, Texas for work this past weekend, and after looking at the map, realized that it wasn't all that far from Oklahoma, where some of the nicest trilobites in the US can be found. I did some research on where to collect, and it seemed that access to Black Cat Mountain through Bob Carroll was iffy, so the other alternative was the Theisen Quarry, where it looked like a few TFF members had collected before, although there was sparse information on the quarry other than TNGray's nice trip report. I contacted Leon the week before and arranged for a trip this past Sunday. The weather looked a bit iffy with potential rain, but I took the gamble and drove the 2 hours up to Clarita, and met Leon bright and early Sunday morning at 7 AM. The weather was cold, windy and drizzly in the morning, but it cleared up and ended up being a fantastic day with spring-like weather after lunch. The collecting was easy - at least compared to my prison labor like experience in Morocco earlier this year. The exposures have been exposed by an excavator several years ago and tons of the productive strata are available for you to browse through. I'm generally a lazy collector and don't like doing hard quarrying and splitting so this was right up my alley. Here's a view of the Bois D'Arc Formation exposures at the quarry: I didn't even bring (or need) my brick hammer, although I brought a small rock pick to break down the larger pieces. There were signs of life everywhere, almost every piece of rock contained some signs of life - brachiopods, crinoids, Huntonia tails, and other trilobite fragments. Before long, I started finding trilobites - the most common ones are Paciphacops, which look almost exactly like the ones I found in Morocco, except they are a nice caramel color. Most are only partially exposed and will take some prep work to fully reveal, so it takes a sharp eye and some experience to know what to look for. Here's a typical Phacopid as found - they should prep out nicely: The find of the day was a matter of pure luck. I found a small Phacops in a rather large piece of rock, and asked Leon to help whack it down to a more reasonable size as I had to fly back to San Francisco that evening with all my finds. Here is the piece as found with the Phacops tail peeking out in the lower right corner of the rock. And this is what popped out... A beautiful 2" Huntonia! Leon had hit the rock in just the right spot. We were both in shock. It's missing a bit of the left cheek but should otherwise be complete and should prep out beautifully. Later in the afternoon, I found another smaller Huntonia just laying there in the rubble piles. Unfortunately it has some damage from weathering and is missing a cheek, but still should be a nice specimen. Later in the day, I was looking through the rubble piles and all of a sudden starting hearing a loud rattle and saw a huge rattlesnake crawl out from in between the rocks, staring right at me. It got the adrenaline rushing even more than finding the Huntonia, and I ran back to Leon and told him about the snake. He came over the spot and caught the snake for me to see, and eventually released it back to its den unharmed. Apparently there are a ton of them out there so be careful! I ended up collecting for almost 10 hours straight, and we stopped around 5 PM just as it started getting dark. Leon was a fantastic host and his enthusiasm for fossils was infectious, and he was out collecting with me the whole day from 7 AM to 5 PM and was in no hurry to get you off his quarry at a specified time. The price was a bit steep, but I had a fantastic time and would absolutely return again. That being said, if you're not a trilobite fanatic, and don't have the equipment to prepare them, this site is probably not for you, as most of the bugs will take considerable prep work (unlike the ones from U-Dig in Utah for example). All in all, I ended up with around 50 complete Phacopids, the two Huntonia, and a few partial Ketternaspis, in addition to a bag full other other assorted brachiopods. A memorable trip indeed. The finds. Every piece should contain a complete trilobite (mostly Phacopids, but maybe some other types if I'm lucky!):
  2. I was barely recovered from the Brechin, Ontario trip the weekend before when I headed out to the Buffalo area, an annual pilgrimage July 4th weekend for the past four years. Usually the highlight of the weekend is the planned meet up with Tim (Fossildude19) to do a bit of fossil collecting together. Others often join us, but this year it was just the two of us. Weather was perfect and we hit our favorite spot; Smokes Creek, a Windom Shale, Moscow Formation, Middle Devonian Hamilton Group site. This is Tim doing what he enjoys most- breaking rocks:
  3. The weekend of June 24th and 25th I participated in an outing with the New York Paleontological Society led by my friend, Ray McKinney to Brechin, Ontario. TFF Member Malcolm led our group into the James Dick quarry where both Bobycaygeon and Verulam Formations are exposed. These are Middle Ordovician from the Trenton Group and contain a wide variety of invertebrate fossil fauna. Also met other TFF members Kevin (Northern Sharks) and Joe (crinus). Most of the quarry is the Bobycaygeon and the very top is the Verulam- only accessible near the entrance, but I got some excellent well preserved matrix plates from there. I spent the second day combing the spoil piles. This first picture is Lake Simco by Beaverton where we stayed. Malcolm in the middle, explaining the quarry geology to NY Paleontological Society members.
  4. I was debating posting this under the Ohio fossil discussion but am passing through Ohio on my way out to Utah and wanted to know if anyone knows of any good spots to go to. I hear that there's a fossil park in Paulding with the famous Silica Shale trilobite layers. I have all the tools in the car and my wife said I could go out for about two hours tomorrow though it might be one with a cat and newborn.
  5. Greetings everyone, Finally finished our write up on the section illustrating images of the thorax components we found of the rare lower middle cambrian trilobite Zacanthoides walapai at our unique site south of the Grand Canyon near Ashfork. Although we wished for more complete specimens, a scan of the literature shows that most finds are very fragmentary on this species, and to be able to illustrate some additional specimens in good detail was sheer pleasure for us! We have found only 3 or 4 other localities outside the Canyon of Bright Angel Shale, and this is the ONLY one with Zacanthoides. Thank you all again for your interest and past comments on our work in the BAS, and we hope to keep posting more images in the future.
  6. From the album Canandaigua trilobites

    Several thoraces, two cephalons of Eldregeops Rana from what is probably the Smoke Creek Trilobite Bed of the Windom Shale. This sample comes from a creek on private land on the West shore of Canandaigua Lake in New York State Finger Lakes region
  7. My wife and I have been hunting a Silurian Dolomite outcropping all day in kentucky. We found about 30 beautiful trilobites. In the rock, we also found several of these things. I imagine it is cnidarian something or other, but can't place exactly the id. Any help would be appreciated. -J
  8. A friend and I plan on making a fossil and rock hunting trip into Georgia after watching the solar eclipse in aAugust.We will be driving from the Charleston area towards the northwest corner of Georgia before heading home to Florida. The Georgia part of our trip will last from August 23 to 25. Can anyone suggest some places where we will have a good chance of finding fossils of any sort but preferably something we are unlikely to find in Florida? And if anyone is familiar with northwest Georgia and would be interested in joining we'd enjoy meeting up. Kara
  9. Hi, I found this interesting piece in Ordovician Platteville Illinois. A very tiny trilobite pygidium on top of a partial Isotelus cephalon. My question is what species is the pygidium? I'm guessing Encrinurus, but not sure...any ideas? Also, how can one tell if it is from a juvenile, this tail measures only 1.5mm. Thanks
  10. Hey guys, Skyelar and I are off to Branson (she's driving right now)! I vaguely remember hearing trilobites can be found in the area? Can anyone be so kind as to help out as to where they are. We're on limited time unfortunately! Cheers, Troy and Skye.
  11. I will be in Western NY on Sunday and Monday this coming weekend, and would like some recommendations for sites to visit. I will be travelling from NY City to Canandaigua, and am willing to stop on the way if there is an interesting trilobite collecting site--I am flexible on which way I drive, etc. Since lagerstatten sites such as Walcott Rust are not open to the public, I would love recommendations to sites that are known to be accessible, public or private. If private, please PM me if you think the property owner would be amenable to a request from a solo collector. Specific directions to any recommended site are very appreciated. I am also happy to meet anyone along the way so I can learn with someone with experience. I am interested in trilobite collecting, and would love the chance to find the unusual or less usual species, so the site can be Ordovician, Silurian, or Devonian. Places that you know have better preservation are preferred, even if it is more difficult or farther to travel there. Off the beaten track is fine, as long as it doesn't take a long time hiking just to get there, or is very physically strenuous to reach. I will be making a stop at Penn-Dixie, where I am a member. I will also be staying on my family's property in Canandaigua that has a creek with trilobite species (see images of trilos collected in May this year). Unfortunately, both of these trilobites I have below were found out of their stratigraphic context so I was wondering of there is any resource you can refer me to that can help me tell which strata are probable for finding trilobites(ie as I walk up the creek, and look at the exposed strata, is there a way to visually recognize each bed in the formation?). On the maps, the trilobites listed on the east and west shore creeks of Canandaigua Lake are Phacops/Eldregeops and Greenops sp of the Hamilton Group, Moscow and Jaycox Formations. BTW, I gave up on trying to remove matrix on this one, too hard to do in control--I have no pneumatic tools, only a pick and a small hammer. The Penn Dixie matrix is sooo forgiving/easy in comparison! Thanks in advance!
  12. Hi everyone, I was on vacation in Newfoundland, Canada with my family earlier this month. We were doing some very amateur fossil hunting in the Conception Bay area and my 6 year old found the rock below. It was found in a shale area, we also found a number of small pieces with trilobite fossils (none were spectacular). I havent had any luck identifying the pieces by googling and she is super eager to learn about what some of these fossils might be. If anyone has any thoughts it would be greatly appreciating. If any additional info (or pics) would be helpful let me know. Thanks, Sean Unfortunately, I think Im now addicting to these forums checking out some of the crazy finds!
  13. A couple weeks ago, I made a trip to Penn Dixie for the,"dig with the experts" event and had a blast! Found lots of great stuff, too numerous to post. Here is one of my favorites finds, a complete Eldredgeops rana with what looks to be a cephalopod(?). On the other side is/was a pyritized worm tube coming out of the bugs eye. Unfortunately, half the tube flew off while prepping. .
  14. Hi Everyone, This season I'm planning to do at least one fossil hunting trip outside of my usual stomping grounds in the Massachusetts area. I looked at a couple of trip options and have decided on taking a couple days off of work to drive up to Penn Dixie in upstate NY. It's roughly an 8 hour drive from Massachusetts to Hamburg, NY. Friday/Monday would be my travel days (with some stops along the way), leaving me Saturday and Sunday to actually do some digging at Penn Dixie. Many of the forums members here seem to frequent Penn Dixie and for good reason! I have yet to visit the quarry, but it looks like a great spot to dig for Devonian fossils and certainly seems popular. I'm primarily interested in digging for trilobites and with a little luck will hopefully find some Phacops and Greenops trilobites of my own. I was hoping to see if you guys had any tips so that I can make the most of my two days up there. Where do the trilobites like to hide?! Right now I'm targeting the end of June for the trip (Tentatively the weekend of June 24/25). My summer is pretty jam packed so if this date doesn't work I might be looking at taking the trip up in late August/early September. If any TFF members will be at Penn Dixie on June 24/25 I'd love to say hi and split some shale with you . Additionally, if anyone has any suggested tools that aren't on my packing list or papers worth reading any/all suggestions are welcome! Resources. Packing List: 3 lbs hand sledge Chisel end rock hammer Assorted cold chisels Pry bar Eyewear Work gloves Thanks as always!
  15. @Fossildude19, please let me know if this is inappropriate to share on the forum. I'm not trying to advertise as an employee of the site, but rather share a good deal with anyone who might be interested in visiting or taking out a membership. As a fossil hunter, I don't typically think to check Groupon for fossil parks, so I figured I would share it for anyone who might be thinking about checking it out as it saves some decent money.
  16. Hi there, I'd like to learn more about paleontology and was wondering which books would you recommend for a beginner? I'm looking for books on ammonites, trilobites and dinosaur paleobiology. Also are there any books on Ankylosaurids around? Thank you for your help. There are so many books I don't know where to start. Jojo
  17. I am planning a fossilhunt at Cole Hill Road in Sangerfield New York, on 6-25-17. I invite anyone who wishes to go to meet me there. I plan on arriving somewhere between 9-10 am.
  18. HI all, As we work through the thousands of slabs of Bright Angel shale from the last few expeditions, I thought Id post for fun some of the more fossil packed slabs we pulled out of the outcrop. Trilobites overlapping trilobites! They are all one dominant type - Zacanthoides Walapai, and are typically molts. Trilobites are not common here in Arizona, but if you get into the right layers.... Arizona Chris Paleo Web site:
  19. From the album Mississippian Redwall Limestone Fossils, Arizona

    Found both in the Mooney Falls and Thunder Springs members of the Redwall Limestone on the Mogollon Rim far south of the Grand Canyon, this is the most common trilobite. While I know of no one that has found a totally complete specimen, we have all the molted parts available for study. This specimen, collected off Highway 260 East of Payson is in a reddish fossiliferous chert that is packed with fossils. Typical of the Thunder Springs member here.
  20. After leaving Sanibel Island, I decided again, to make a quick stop along the Conasauga River in Murray County, Georgia to collect some Upper Cambrian trilobites. For more pics and info see my post from 5-22-17 titled Georgia Cambrian Bug Hunt. Below are a couple pics of some of the fossils I found in an hours time of searching.
  21. From the album Purchased/Gift Fossils

    I purchased these with some birthday money. I've always been fascinated by these trilobites in nodules. Eldredgeia venustus. Bolivia. If anyone has better information on geologic details (group, formation age, etc) I would appreciate getting it correct.
  22. text and figures from: Zong, R.W., & Gong, Y.M. (2017) Behavioural asymmetry in Devonian trilobites. Palaeogeography, Palaeoclimatology, Palaeoecology, 476:158-162 LINK Trilobites, like many extant arthropods, were in a soft-shell state without defensive ability just after moulting (Henningsmoen, 1975). It is possible that Omegops cornelius and Plagiolaria nandanensis would choose to get away from the discarded cephala to avoid any potential harm that might ensue by touching the hard old cephala. They were likely to turn left (counterclockwise) to move away if the old cephalon was discarded on the right side of the body, or otherwise to turn right (clockwise) if the old cephalon was on the left side. Therefore, the asymmetric distribution of cephala during the moulting process reflects the asymmetric motion in these two phacopid genera. Specifically, Omegops cornelius preferred counterclockwise motion, so that it would choose to push the old cephalon to the right side of the body (Fig. 3A), whereas Plagiolaria nandanensis preferred clockwise motion (Fig. 3B). As mentioned above, the behavioural asymmetry of two trilobites are opposite. It may be helpful in tracing the origin of the asymmetry. One plausible explanation is connected with their body structures, in which the most obvious difference is the size of their eyes; does the large-eyed Omegops cornelius prefer the counterclockwise motion, and the small-eyed Plagiolaria nandanensis prefer the clockwise motion? If so, the preferred direction of movement of Omegops cornelius and Plagiolaria nandanensis found in other areas should be the same as is revealed here. The statistical evaluation of the cephalon position relative to the trunk reflects that Omegops cornelius from the Upper Devonian of the western Junggar (Xinjiang), preferred to turn the cephalon to the right side of the body during the moulting process, showing a preference of counterclockwise motion, whereas Plagiolaria nandanensis from the Lower Devonian of Nandan (Guangxi) preferred clockwise motion. This phenomenon demonstrates that behavioural asymmetry existed in Phacopid trilobites, but may be opposite in different trilobites. The origin of such asymmetric behaviour is unclear, two possible explanations could be related to the body structures of trilobites, and the environment where trilobites lived in the specific geologic age.
  23. If anyone is interested I will be taking / meeting some people from the Fossil Forum to go to Penn Dixie (Hamburg NY) on Friday June 2 and Brechen (about 1/12 hours north east of Toronto) on Saturday June 2. Please PM me if you are interested in joining us. Expect to work hard but come away with some nice goodies. Both localities are good for trilobites, Brechin also adds crinoids and cystoids to the mix as well as brachs and all those other things that I don't collect.
  24. Yesterday was a planned get together of TFF member friends at one of my favorite Middle Devonian localities- Deep Springs Road in Madison County southwest of Hamilton. It is the easternmost exposure of the Moscow Formation and the Windom Shale- the same formation exposed at Penn Dixie- but a very different faunal content. Biodiversity is the primary feature of this site and this outing added to an already long species list. This trip was actually a long time in planning. Frank (frank8147), a long time collector in New Jersey's Cretaceous streams, had been expressing to me a desire to visit Upstate New York and try his hand at Paleozoic collecting. He told me he and his girlfriend were planning a trip and once we were able to set a date- which was right on the heels of my own trip to Germany, I decided to invite a few other TFF friends. Tim (fossildude19), Dave (Darktooth), Diane (Mediospirifer), Dom (Dsailor), and Tony (njfossilhunter) were able to make it. Tony and I drove up together. Thanks Tony for all of that driving. Dom and Frank were new to the site. Tim and Dave brought family members and a good time was had by all. A rain shower in the middle of the afternoon drove some away, Diane and her husband, Tony, and I remained and I made most of my best finds late in the day. Here's a few pics: Here is (left to right) Dave, Tim, Tony, and Dave's older son.
  25. The fossil(s) in question here were collected during the summer of 2016 from the Liston Creek Limestone (Silurian) in northern Indiana. I am using them for my senior thesis project in which I'll be comparing Ordovician trilobites with Silurian Trilobites. Anyways, I have been taking a scientific illustration class during the month of May and for my final project I decided to do a stippled illustration of one of the Cheirurus cephalons I collected in 2016 (in total i have about 7 cephalons of varying sizes, all with identical morphological characteristics). I've been trying to narrow this particular specimen down to the species level since I plan include the binomial nomenclature on my final illustration. After a days worth of researching I'm still unable to confidently identify the specimen at the species level. The literature I have on the rock formation this specimen comes from lists Cheirurus niagarensis among the common fauna. From what I've seen online, I don't think my specimen is C. niagarensis. Two other possibilities I've noted are; C. infensus, and C. insignis... So far those are the only 3 Cheirurus species that resemble my specimen the closest, but I'm still not confident in any one of them in particular. As fossil ID information is notoriously hard to find on the internet I've decided to post some pics of my specimen on here to see if anyone can help me to ID it. The first 5 pics are of the specimen I'm using for my illustration. The 6th picture is of the previously mentioned specimen (right) and a larger specimen (left).