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Found 23 results

  1. Hey everyone! I finally had a day to go out and enjoy a Saturday fossil hunting with no time limit!! I decided to check 2 middle Devonian locations that have yielded nice dipleura specimens in the past. I’m still looking for “that one” specimen....eventually I’ll find one. I didn’t find the trilobite I tasked myself to find but I did find awesome stuff on Saturday . So here is a little trip report from Saturday September 28, 2019 plus some extra stuff I found earlier in the month. I’ll throw it in at the end. I got up really early so I could get to Cole Hill by sunrise. I had 2 sites in mind from the start. My new house is now only 30 minutes away from CHR which was a nice surprise! Early morning view I’ve had some tough outings at Cole Hill. This rock is so hard!!! I’ve tried clearing overburden just to get to more immovable rock. Anytime I get things moving I find something decent so that was the goal. Find rock that moves!! I ended up finding a spot way off the main outcrop and I got to work. I immediately found a plate with 5 cephalons!! It’s not being very photogenic so I took a picture after making them wet. the right shot shows 4 cephalons stacked in between the white scale bars....the left one shows the 5 hidden cephalon that Is under another cephalon. The bottom piece is just a cheek but could continue I’m not sure. Not very photogenic but rare to find an assemblage like that. I was able to find an area with more weathered rock and I found around a dozen cephalons!!! These are the better and bigger ones. I have a few nice juveniles but they are half covered in rock. I liked these 2 a lot. The left one is very 3D (also came in 10 pieces lol) and the right one has all the cephalon margins intact!! some nicer pygidiums I found. I found 7-10 total in various conditions. I found a lot of associated fauna as well!! The Gastropods came from mostly one bedding plane. The same spot I found the cephalon hash plate these were not far behind littered all over. I also found a bunch of bivalves! Way more than I usually do. I collected more on this trip than I have in the past. The rock kept moving and I kept finding!! After I worked the shelf back far enough I decided I wasn’t going to try and find a new spot. 4 hours of collecting and it was time to go to Deep Springs Rd. Even though I didn’t find exactly what I was after I found lots of amazing specimens compared to past trips . Kept my finder crossed that DSR would be as kind. DSR next post.....
  2. Hey everyone! It’s been a crazy busy June, July and beginning of August for me! I just finished moving into my house and I just got married on August 9th so my life has been a tornado. As a result I haven’t been able to comment, participate and keep up with all you fine folks on the forum like I usually do. I was still able to get out collecting here and there and I met up with fellow forum member @DrDave and did some exploring for the lower Devonian eurypterid Erieopterus. I won’t report on that until I have something to share. I think me and Dave found the right horizon now I just gotta search till I find something. Anyway I’m just gonna share the highlights from 3 trips to Briggs rd and 3 trips to DSR and a bonus day at Penn Dixie. Ill do the highlights from Trips on 6/30 7/06 and 7/28 to Briggs rd first. I found some pretty important specimens. Briggs rd is a very interesting site and you can find 3 different species of trilobites here. The Eldredgeops is the most common by far but the greenops and dipleura have made some appearances. This has got to be my most impressive greenops in a long time. This is actually a complete specimen!! The pygidium is tucked underneath. I have the right eye safe in a small ziplock bag. It came off in the counterpart and I saved it to try and glue back when I get the nerve. here’s a picture of the back. I have the counterpart for the pygidium and I’ll need to glue and prep if I want it perfect. Some of the material is attached to the counterpart. Im really excited about this specimen because the quality is good enough to compare with the greenops from DSR and Buffalo area. These eastern New York greenops are considered an undescribed species so I’m glad I have something quality I can use to really eye out the differences. After @Darktooth and his rock club went to Briggs I happened to be there the next day and found this awesome half specimen of a large dipleura! When I got there I found the body segments in 2 pieces and they looked like they went together. After awhile I came across the counterpart in rubble and realized “where is the cephalon?!” I went nuts looking for it with no luck then decided to try and pry a pieces of the wall off and BOOM! The cephalon was still in the outcrop lol. Super lucky. This was my best dipleura from Briggs so far. I’ve found some nice partials but this is the best I’ve found so far. @DrDave was kind enough to gift me this perfect un weathered cephalon. This specimen came from very fresh rock and is nearly perfect. I told Dave I’ve been trying to collect some quality cephalons from Briggs for comparison. I’ve noticed most specimens are usually missing a well preserved exoskeleton. This makes it hard to really compare with the western New York Eldredgeops that grow much much smaller. It’s interesting to me that the greenops are considered a different species and the Eldredgeops are not as you go east across New York State. I’m not here claiming everything is a new species only pointing out the discrepancies in species distribution across the state. Somehow the greenops change species as you go east while the Eldredgeops rana stays the same across the state. It’s not like the Eldredgeops from the east and west are identical either. The eastern New York Eldredgeops can grow to 3 inches! Just food for thought. I think about weird stuff like this a lot ha. anyway...here’s a close up of the undamaged cephalon. A tiny amount of with with an air abrasive and the eye detail will be perfect. here’s and example of a typical Briggs rd cephalon. The eye lenses are very 3D and preserve well even when the exoskeleton is weathered away. It’s hard getting a fresh specimen. just a couple nice cephalopods courtesy of Briggs rd. I love trilobites but I appreciate a quality cephalopod should a complete on present itself lol. Next is DSR highlights! Phyllocarids on the menu
  3. Hello everyone! I found this specimen also in a creek on a walk through a local park north of Pittsburgh. Thinking it may be a burrow fossil, but if it is, was wondering if there is an actual scientific name for it, so I know how to file it away accordingly under the proper name. Found the term Cruziana online, and wondering if this would qualify. Does anyone have any opinions? Or, if it is a burrow, is there any way of narrowing down what might have made it i.e. trilobites/arthropods etc? Details: 1) Found in isolation/there were no other similar pieces nearby. 2) Measures about 8-12 inches long. Burrow notches are about the width of a penny. 3) Again, found in Carboniferous territory in Western Pennsylvania found in a creek. Thanks everyone!
  4. Arthropleura

    Width = 8 cm (field of view).
  5. 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.
  6. until
    Featured Speaker: Our speaker will be Dr. Rodney Feldmann. Although retired from the Kent State University faculty, Dr. Feldmann continues to teach graduate-level courses in paleontology, directs graduate students in that area, and conducts grant-funded research. The title of his talk will be "What the heck are cyclids?" https://www.kent.edu/geology/profile/rodney-feldmann
  7. https://www.haaretz.com/science-and-health/MAGAZINE-tiny-babies-of-prehistoric-giant-shrimp-were-ferocious-killers-too-1.6150981
  8. https://phys.org/news/2018-05-major-fossil-emergence-early-animal.html
  9. L.S., Last Sunday, I found the specimen shown below on a spoil tip in northern France (Westphalian C, Late Carboniferous). The three photographs were made under different lighting conditions, in an attempt to illustrate the small scale characters of the about 8 mm-long fossil. It appears to be an abdomen (opisthosoma), perhaps of a trigonotarbida spider or some other arthropod. However, since 'beasties' are definitely not my strongsuit, I would really appreciate your suggestions and help to get this little one identified properly. Thanks, Tim
  10. http://www.iflscience.com/plants-and-animals/earliest-evidence-of-parental-care-found-in-520-millionyearold-fossil/
  11. Old news

    As far As I could ascertain, not posted yet edit: Amazing Czech Open-Access Pdf Library on this very forum Posted by Piranha in 2013 you live & learn Šnajdr M. (1983): Revision of the trilobite type material of I.Hawle and A. J. C. Corda, 1847 Sborník Národního muzea v Praze, řada B - Přírodní vědy 39 (3): 129. [PDF fulltext] NB 35, Mb or thereabouts TAXONOMY warning:This is from 1983,remember!!
  12. Bug wings

    I know figuring out the IDs of bug wings can be very difficult, but if anyone on here can help I'd greatly appreciate it! I've found these and some others (that I put somewhere I would definitely remember) near Humboldt, Nebraska in the Indian Cave sandstone member of the Towne Formation which puts their age late Pennsylvanian to early Permian. To be completely honest I've wondered if a couple of them might actually be leaf impressions, but I'll let y'all help me figure that out.
  13. Books Arthropods Canada

    Book Freebies for someone in Canada. Working my way through clutter. I've boxed up some publications on Trilobites and other arthropods...to give away. Some my doubles, others in 'ok' condition. Various ages. Set of journals on German Devonian/Carboniferous trilobites. Used but decent shape. Some notes in margins. No need to compensate me for postage but I ask that you make a equivalent donation of the postage to your local SPCA or Animal shelter. Likely about $30 postage. Note...I will send these as a group to someone with an 'expressed interest' in the subject of Upper paleozoic arthropods or Carboniferous 'stuff''. If I dont respond, they are spoken for. PM only, please.
  14. walter

  15. Cambrian lagerstatt,Burgess type

    Did a quick perusal of the forum and came to the conclusion that this paper might be new to all of you. If not,I apologize beforehand to the previous poster BTW,the source publications has a reputation to uphold.Read it,by all means Cargaineslage.pdf
  16. Festive occasion

    Good issue of one of my alltime favorite German publication series.Text is in German. Abbreviated contents Alberti on German trilobites(!!!!),alas no line drawings or photographs of specimens Groos on ostracods(paleoz) Foram teratologies a pretty funky and often cited piece by Walliser on the Runzelschicht of ammonites.Required reading!!!! miscellaneous structural geology and petrology http://www.geomuseum.uni-goettingen.de/museum/publications/images/GAGP/pdf/GAGP_Nr 5_Festschrift_Martin_Henno.pdf
  17. famous arthropods

    NB.:LARGE!! NNB.:get it while you can(edit:works to nov.6th) http://rstb.royalsocietypublishing.org/content/royptb/272/920/537.full.pdf
  18. Flexicalymene granulosa

    From the album Urban Fossils of Toronto (Georgian Bay Formation, Lower Member)

    Flexicalymene granulosa, Mimico creek, Toronto, Ontario. Georgian Bay formation, late Ordovician. Complete specimen still embedded in the shale. Will need prep work to be exposed. I found this one at a collapsed cliff of shale at Mimico creek. I found some flexi's this summer at Mimico creek but usually whole specimens start crumbling apart the moment I try removing the matrix around the specimens.

    © (©)

  19. I saw this book at a Barnes & Noble yesterday: http://www.amazon.com/Trilobite-Book-Visual-Journey/dp/022612441X/ref=sr_1_1?s=books&ie=UTF8&qid=1403737304&sr=1-1&keywords=trilobites
  20. Hello everyone, I am new to this forum. Is anyone from Southwest Michigan? I've posted a photo of my first possible arthropodic find from a local field near my home. Can anyone help me identify whatever this is?
  21. a book review of: Evolution of the Insects by David Grimaldi and Michael S. Engel. Cambridge University Press. 2005. 755 pages. Hardcover retail $120 USD. When I was in the sixth grade in the 1970's, each of us had to build an insect collection for science class. We learned about biological classification before we started because each collection had to have at least nine different taxonomic orders represented. At the time I had an up-to-date insect identification guide to help me. What I didn't know then was that a basic reevaluation of the taxonomy of insects and all other organisms was in progress. It involved a more detailed study of anatomical characters and incorporated information from ongoing genetic and molecular research. This reevaluation would not completely alter the tree of life but many twigs would be rearranged onto different branches with even some branches repositioned as scientists recognized more precise indicators of ancestry. "Evolution of the Insects" is a volume that attempts to address every major aspect of the evolutionary history of insects. It's an especially ambitious goal when you consider that there are more species of insects (over 925, 000) than there are species of all other organisms put together (other invertebrates, vertebrates, plants, fungi, and all microorganisms). And that's just the modern species. Insects have risen or dwindled in diversity at different times in the geologic past just like any other class of organisms. Some have even died out across their long history which extends perhaps 400 million years The authors are both paleontologists who have traveled around the world collecting modern and fossil insects. Dr. David Grimaldi is Curator of Invertebrate Zoology at the American Museum of Natural History and adjunct professor at three universities. Dr. Michael S. Engel holds two positions at the University of Kansas: Professor in the Department of Ecology and Evolutionary Biology and Curator in Charge in the Division of Entomology at the Natural History Museum. He is also a Research Associate at the American Museum of Natural History. Chapter 1 introduces insect diversity and evolution. The topics range from the basic concept of the species and total insect species estimates to biological classification, history of research, and paleontology. Chapter 2 looks at the types of fossil insect preservation (compressions, impressions, amber inclusions, etc.) and the major fossil insect deposits of the world. Chapter 3 covers the arthropods, their relationship to other phyla, their diversity, and the origin of insects. Chapter 4 breaks down the anatomy of insects, the interrelationships of insect groups, and the history of entomological research. Chapters 5 through 13 review the known extinct and modern insect orders as they are now understood. Chapter 14 focuses on the evolution of the modern groups of insects and how it is linked to the rise, development, and spread of flowering plants (and other organisms) during the Cretaceous and across the Cenozoic. The reader also learns how insects were affected by the K/T extinction event and the break-up of the continents across the Cretaceous and Cenozoic. The text is technical but the first three chapters prepare the layman for that. "Technical" can mean difficult to read for the average reader but it also means detailed - the kind of detail some collectors are hoping for but cannot get in a mainstream fossil guide. This book taught me how insect interrelationships have been reinterpreted since I was in elementary school. For instance, mantises, once included within the Orthoptera with the grasshoppers and crickets, are now classified in their own order, the Mantodea. A mantis might look like a predatory grasshopper but it does not share the same modifications of anatomical characters that indicate a close relationship to grasshoppers. The particular complexity of the male reproductive organs of roaches, mantises, and termites unite them as relatives (orders within the superorder Dictyoptera) and separate them from other insect groups. Whether the reader approaches this book as something to be absorbed in its entirety (the entomologist seeking to expand perspective) or in sections (the serious hobbyist wanting to increase expertise on particular groups), I think everyone should read Chapter 14. It's the condensed history of modern insects starting in the Cretaceous, when perhaps half of today's families appeared, and it shows them against the background of a changing world. The reader sees the birth and development of complex plant-insect (as well as bird-insect and mammal-insect) relationships that we see in action today. This chapter alone would be an excellent reference for someone looking for a broader discussion of insect ecology. The preface points out that there are two other similar references available (the hexapod section of the "Treatise of Invertebrate Paleontology" by Carpenter, 1992; "History of Insects" by Rasnitsyn and Quicke, 2002). However, they are less-amateur friendly and focus only on fossil insects. Also, "History of Insects" sells for a few hundred dollars. Since "Evolution of the Insects" shows modern and fossil insects of the same order side-by-side, the reader gets the "big picture" in one book . This book provides a rich mix of detailed drawings and excellent close-up photos of fossil and modern specimens (including SEM shots of tiny forms and anatomical characters) along with numerous charts and tables. The photos are especially abundant in the chapters that discuss the orders, and in case anyone is wondering, there are a lot of nice shots of great amber specimens from several localities around the world. I would recommend this book to entomology students and serious fossil insect collectors. Even if the reader is just thinking of getting serious, I would suggest acquiring this book because it is a reference to grow into. The general fossil collector building a personal library of comprehensive volumes on various groups of organisms should invest in a copy as well. It's expensive but well worth the price. Jess
  22. Continued from Part 1 Other things we would find on the beach beside trackways are actual parts of the animals such as scales, teeth, and bones. Slab containing various bone fragments More bone fragments, scales This piece of sandstone shows an interesting feature. The recess shows a 'U' shape obstruction. This could have contributed by a change in water movement. This could be interpreted, possibly, as water movement such as a tide, and not simply as wave action. That's what comes to mind so far. Same thing I said before, I'll leave that to actual experts. More arthropod trackways Marks made by some type of pine cone (lycopsids are distant ancestors of conifers) Possible feeding trace (Cruziana - center), with resting trace (Rusophycus - top) This old dog hung out with us pretty much the whole trek. You could hear him cough once in a while and chewing some shale rocks. He stayed a little distance from us but never too far away. A couple passing by asked if the dog was friendly, which we replied he was. He didn't mind the attention. When it was time for us to turn back, we whistled to the dog and he followed us back up the beach. That day we had had our personal Blue Beach bodyguard. =P One section of the beach had a stratum, or layer, that extended from the cliffs to the bay. This layer of sedimentary rock had rounded cavities randomly spread across it. These cavities indicated the location of trees that would have had been growing. The traces of this ancient forest came in various sizes, from a couple centimeters to about a foot in diameter. More arthropod trackways (bottom right, close to hammer) I'd say when we were done, it was probably close to 1pm when we got back to the car. We put our equipment in the trunk and headed to Windsor to gas up and for a bite to eat. We drove a little bit downtown until we found a fast food joint, ate a quick meal, and proceeded back on the 101 South towards Halifax. I'm not gonna say much about my GPS Navigation device called 'Maggie the Nagging B@#$%', but lets just say that at one point it was better to watch the signage than to refer to its reference on the maps. Hopping back on the 102, we made our way North pass Truro and then jumped on the 104 towards Amherst. We did one site and in the Cumberland area, the tide had peaked at around 1pm. It was about 3:30pm when we got close to Amherst. It was still early in the afternoon, so we decided to take a left and head to Joggins. Might as well get as much rock hunting done in a day, right? Dawson 1868a, p. 179 We made our way towards Lower Cove, a little ways North of Joggins. I parked the car close to the bridge that passes over Little River. Not long after we set foot on the beach and made it a few hundred meters heading North, my buddy Matt got a text on his phone from our friend Brian Hebert that lives in the area. We could see him run in our direction. He recognized my car that was parked at the bridge. I came to Joggins about 2 weeks before and the beach was very hazardous with all the flying rocks and harsh winds. The weathering of the cliffs since then was pretty extensive, as some of the trees and plants I had noticed then were pretty much covered in piles of loose sediment. I will make a post of that short trip very soon. We found some similar type of trace fossils at Joggins that we found earlier at Blue Beach across the bay. At this location, plant material was more prominent, at least visually. Horseshoe Crabs trace fossils Ferns (I rarely find any when I come to the cliffs) Ferns up close Old mine shaft from the old coal mines (turn of the 20th century) Branching Stigmaria (tree roots - lycopsids) with rootlets On to Part 3!
  23. Nutrition And Horn Size Of Rhino Beetles

    Though it has nothing to do with fossils, this is a really interesting article on how nutrition plays a role in the size of modern rhino beetles horns, suggesting that perhaps: I wonder if this sort of physiological response had anything to do with trilobite ornamentation.... http://www.bbc.co.uk/nature/18955652