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  1. I'm working up a series of fossil field guides for various formations. I'd like to provide a visual indicator of which fossils are rare, which are common, and which are abundant, without getting in the way of the visual layout of the fossils & identifying information. The complete set of categories I am working with is {Abundant, Common, Rare, Very Rare, Common to Abundant, Rare to Abundant, Rare to Common, Present, and Questionable}. Has anyone seen a good way that a field guide of any kind has provided such a visual indicator as a page-wide element of visual layout? Attached is my first
  2. Found near Winchester Virginia in the needmore formation, having a hard time figuring out the species. Still have to clean up his right side, but there’s at least one genal spine preserved, can’t tell yet if there’s any spines along the ends of each thorax segment. Had a good tip on reddit that it might be a Reedops but the librigena area seems not as substantial on mine. Likewise the attached genal spine seems much finer and arcs further away from the thorax. Has a smooth glabella (with the exception of the furrows) which I also don’t see any examples of when I search Reedops either. Eyes are
  3. Although identification of Hadrosaurid teeth in North America is very difficult or impossible some older publications by John Horner give us some information to help us with a few. The information goes back a bit so there might be some new understanding but will share what is published. If anyone has publications that can add to the dentary information of teeth from North America please feel free to post it. Horner notes that on dentary teeth all Saurolophinae teeth have diamond-shaped crown whereas Lambeosaurinae teeth are more elongate see figure 13.4. So one may not be able
  4. Hi everyone, I just got into fossil collecting and for some reason Ammonites have my attention. I have a small background in beetle taxonomy, so I was curious if there is a dichotomous key for North American Ammonites? Are dichotomous keys even a thing for fossils? Is there any comprehensive books or guides for Ammonites in English? All I am aware of is the "Treasties on Invertebrate Paleontology" and the fourm search function isn't helping me out either. Thanks in advance.
  5. I live in the Northeast of the USA. I found this bone out in the forest yesterday and I’m having trouble identifying it due to its size. As shown in the photos, the bone looks very scratched up, probably chewed on, and both joints on each end have been snapped off. The bone was cracked down the middle, then fell off my counter which split it in half. I don’t have a metric ruler, but 12 inches is about 30 centimeters. If it had the joints I think it would be closer to 15 inches, or 38 centimeters. I was thinking it was a white tail deer tibia or possibly a femur (I was leaning more towards tibi
  6. My fossil hunting friend came across this object in a creek in eastern Missouri. At first glance this ~1 cm diameter ball with stout spikes would seem to be some sort of camerate crinoid, but the spikes cover the entire surface, with no apparent place to put arms, column, mouth, or anus. (Side note: That must be the crinoid folksong community's version of "Head, Shoulders, Knees, and Toes.") From there my fallback would be coral, or perhaps sponge, but the complete coverage around the whole sphere (see attached video) has me a bit baffled. The creek flows through mostly Meramecian
  7. Hey guys, I was wondering if there is any good books to help identify dinosaur fossils? Thanks so much, Wyatt
  8. Would anybody by chance have a PDF copy of "North American Pleospongia" by Vladimir J. Okulitch DOI/link: https://doi.org/10.1130/SPE48 If you do please PM me!
  9. Hello group. I just wanted to share some photos of a Mastodon Americanus tooth I purchased and detailed. I've included the before and after photos. There are no enhancements to this fossil, just a lite coat of wax.
  10. The French magazine 'fossiles' recently published a very complete and richly illustrated article about uncoiled ammonites from the western inland sea (Upper Cretaceous –North America) Fossiles, n°39, juillet-août-septembre 2019 ; pages 5 to 42 (in french language…); -quarterly review by annual subscription- www.minerauxetfossiles.com revue fossiles002.pdf
  11. Hello again! I'm almost ready to label my Carboniferous fossils, and since I know pretty much nothing about plants fossils, I was hoping to get some help Specimen #1 from Pennsylvania, USA: Specimen #2 from Illinois, USA - each half of one nodule: Specimen #3 from New Brunswick, Canada: Specimen #4 from New Brunswick, Canada: Specimen #5 from Poland: Specimen #6 from England: Thanks in advance for your help! Monica
  12. It seems to me that our feral horses should be considered "Native Wildlife" like any other. Why did horses in North America go extinct?
  13. I have a few questions about trilobites. 1) Does anyone know the size of the largest trilobite ever found? 2) What is the average size of a trilobite in North America, specifically New York state? 3) What is the average size of a trilobite found in Morocco? 4) Why does it seem like trilobites are mostly found in New York state and Morocco? Do maps of what the Earth might of looked like during the Devonian period? I had a bit of a disappointing first hunting trip for these little creatures in Tully, NY yesterday and any answers that will help me better und
  14. Beth de la Garza

    Identification and age of Tooth

    This tooth was found on a beach off the channel at South Padre Island. I am a shell and artifact hunter and have been finding fossils of late. I don't really know about fossils and have joined this group to help me learn and identify what I find. I have three fossils that I would love help with identification and I will post separately. Thanks so much!
  15. Beth de la Garza

    Identification and age of Tooth #2

    This tooth was found on a beach off the channel at South Padre Island. I am a shell and artifact hunter and have been finding fossils of late. I don't really know about fossils and have joined this group to help me learn and identify what I find. I have three fossils that I would love help with identification and I will post separately. Thanks so much!
  16. Perri, A., Widga, C., Lawler, D., Martin, T., Loebel, T., Farnsworth, K., Kohn, L. and Buenger, B., 2018. New Evidence of the Earliest Domestic Dogs in the Americas. bioRxiv, p.343574. https://www.biorxiv.org/content/early/2018/06/27/343574 https://www.biorxiv.org/content/biorxiv/early/2018/06/11/343574.full.pdf https://www.academia.edu/38045438/_American_Antiquity_2019_New_Evidence_of_the_Earliest_Dogs_in_the_Americas Leathlobhair, M.N., Perri, A.R., Irving-Pease, E.K., Witt, K.E., Linderholm, A., Haile, J., Lebrasseur, O., Ameen, C., Blick
  17. doushantuo

    Campanian gastropods

    LINKdocker David T. Dockery III THE STREPTONEURAN GASTROPODS,EXCLUSIVE OF THE STENOGLOSSA, OF THE COFFEE SAND (CAMPANIAN) OF NORTHEASTERN MISSISSIPPI BULLETIN 129 MISSISSIPPI DEPARTMENT OF ENVIRONMENTAL QUALITY OFFICE OF GEOLOGY size:approx. 27 MB NB: dedicated to Norman F.Sohl(and containing biographical details)
  18. doushantuo

    Montana, a shortish faunal review

    EASTON W.H.Easton: Carboniferous Faunas and Formation of Central Montana A study of the stratigraphic and ecologic associations and significance of fossils from the Big Snowy group of Mississippian and Pennsylvanian rocks Geological suvey Proferssional paper n.348/1962 Number of pages 157 PLATE two: stratidistribplate-2.pdf PLATE ONE(correlation/logs) plate-1.pdf to be used with some care with regard to (at least)the taxonomic aspects
  19. DD1991

    Teilhardina revised

    A new paper regarding primitive fossil primates is available if you're interested: Paul E. Morse; Stephen G.B. Chester; Doug M. Boyer; Thierry Smith; Richard Smith; Paul Gigase; Jonathan I. Bloch (2018). New fossils, systematics, and biogeography of the oldest known crown primate Teilhardina from the earliest Eocene of Asia, Europe, and North America. Journal of Human Evolution. in press. doi:10.1016/j.jhevol.2018.08.005. Ni et al. (2004) were the first primate workers to propose that Teilhardina is polyphyletic, but Morse et al. (2018) formalize this scheme by erecting
  20. Pseudogygites

    Triarthrus eatoni

    Found associated with T. rougensis, T. spinosus, brachiopods, cephalopods, and graptolites. Included in multi plate alongside eight other complete or near complete T. eatoni.
  21. Pseudogygites

    Triarthrus eatoni

    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.
  22. Pseudogygites

    Triarthrus eatoni

    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.
  23. Pseudogygites

    Triarthrus rougensis

    Both genal spines are present. Right side of cephalon is slightly pyritized. Found associated with T. spinosus, T. eatoni, cephalopods, and graptolites.
  24. Pseudogygites

    Triarthrus spinosus

    Ventrally preserved. Both genal spines and one thoracic spine are present. Hyostome slightly visible. Found associated with T. eatoni, T. rougensis, cephalopods and graptolites.
  25. Pseudogygites

    Triarthrus spinosus

    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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