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Found 201 results

  1. Cordaites Leaf

    From the album Carbondale, PA

    Parallel-veined Cordaites leaf with mystery impression superimposed. Carbondale, PA Lewellyn Formation Pennsylvanian period 299-323 myo
  2. Leaf Impressions

    From the album Carbondale, PA

    Carbondale, PA Lewellyn Formation Pennsylvanian period 299-323 myo
  3. Unidentified Plant Material

    From the album Carbondale, PA

    Carbondale, PA Lewellyn Formation Pennsylvanian period 299-323 myo
  4. Flora Hash Plate

    From the album Carbondale, PA

    Finely parallel-veined leaves of a Cordaites plant alongside the branch or root of a giant Lycopod (aka scale tree or club moss). The latter could grow up to 50 m high! found in Carbondale, PA Lewellyn Formation Pennsylvanian (Upper Carboniferous) period 299-323 myo
  5. Calamities Bark

    From the album Carbondale, PA

    Calamities sp., a tree-like plant with hollow, woody stem that grew more than 100 ft high (30m). Carbondale, PA. Lewellyn Formation Pennsylvanian period 299-323 myo
  6. Leaf Impressions

    From the album Carbondale, PA

    Pyrite (?) layer over shale Carbondale, PA Lewellyn Formation Pennsylvanian 299-323 myo
  7. Calamities bark

    From the album Carbondale, PA

    Calamities sp., a bamboo-like plant closely related to modern horsetails with hollow, woody stem that grew more than 100 ft high (30m). Carbondale, PA Lewellyn Formation Pennsylvanian period 299-323 myo
  8. Twig or root

    From the album Carbondale, PA

    Unidentified species of petrified wood Carbondale, PA Lewellyn Formation Pennsylvanian period 299-323 myo
  9. Lycopod Bark

    From the album Carbondale, PA

    Carbondale, PA Lewellyn Formation Pennsylvanian period 299-323 myo
  10. Lycopod Bark

    From the album Carbondale, PA

    Detail from previous image Carbondale, PA Lewellyn Formation Pennsylvanian period 299-323 myo
  11. Calamities Brand and Fern

    From the album Carbondale, PA

    Carbondale, PA Lewellyn Formation Pennsylvanian period 299-323 myo
  12. Scale Tree Bark

    From the album Carbondale, PA

    Syringodendron sp. (Sigillaria family) Carbondale, PA Lewellyn Formation Pennsylvanian period
  13. out,on a limb,non-water gait

    I had this one for a while now ,then saw the current paywall and decided to post this. Great insight into Mid Paleozoic vertebrate locomotion,musings on forelimb morphology and its role in terrestrialization,great grayscale 3d reconstruction . Short,and to the point. Ichtstega!NAE2012.pdf
  14. I've noticed that a lot of clades that first appear in the early Paleozoic seem to immediately be present across the globe, even though the continents at the time were mostly disconnected and separated by oceans. For example, (calcified) trilobites suddenly appear in Cambrian Stage 3, but are already present in Laurentia, Siberia and parts of Gondwana, despite the vast distance and oceanic separation of the landmasses. Similarly, Rugose corals appear in the late Middle Ordovician, but already seem to present across the equatorial regions of the globe. How did these benthic/sessile clades(so I'm not referring to pelagic trilobites) manage to spread geographically wide so fast? Is there any way we could know what landmass was the actual "birthplace" of some of them?
  15. calamitous botany

    If previously posted ,all praise(if any) should go to that previous poster barryUKCalamiBrym.pdf
  16. "coaltime!"

    possibly useful A bit of an oldie. Haven't trundled through it yet,so I don't know if event-/chemo-/sequence-/magneto-/tephra-/biostratigraphical advances get a nod in
  17. arthropod biometry

    The search function returned 11 pages or more.... This might already have been posted before If so ,apologies to the previous poster thesis
  18. Who's eating who?

    perfunctory check made me feel this hasn't been posted yet: foodwe22_55.pdf
  19. Brachiopods & Trace Fossils (paleozoic)

    My kids found some fossils near Roanoke, VA - It looks like they are brachiopods and trace fossils from outcrops ranging from the Ordovician to the Mississippian. Can these be more specifically identified besides generic "brachiopods"? Thanks!
  20. On the winter solstice, we took the family out for a 7-mile winter hike. Luckily it was winter in name only, as the temps got up to almost 50 degrees. We found a nice trail near Roanoke, Virginia, that took us into the Appalachians. As the kids are still excited about our giant fossil hunting trip out west this summer, I decided to pick a location where I knew there were fossils to be found. All I know is that these were Paleozoic formations, where 450mya it was swampy mud flats. So I could tell them we wouldn't be finding dinosaurs, but we might find some shells. So they enjoyed the hike, and spent tons of time looking around for fossils when our climbing reached the tops of the ridgeline. Then we had to tell them they'd be carrying these rocks with them for the next 6 miles.... 1st kid's finds: (large flat-ish shells) (these seemed to be the most common finds) (trace fossils?) (crinoid stems? - Near the 1" mark, top/bottom)
  21. walter

    http://ir.uiowa.edu/cgi/viewcontent.cgi?article=1260&context=igsar
  22. should be easy for US hunters,from the Devonian or Silurian of Northern France,ID?
  23. 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
  24. the edestid way of life

    Taphonomy of a fascinating oddball........... Itano-piscselach2015-AbradedEdestus-final.pdf
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