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Since moving to Gainesville I've had the opportunity to work more closely with the Florida Museum of Natural History (FLMNH). In addition to volunteer digging at the Montbrook site I also get to work on prepping fossils in the prep lab on campus. This brings me into contact with the major players at the museum which is a great fringe benefit to be able to have access to chat with those with lots of paleontological experience. Bruce MacFadden is on the second year of a program to develop an interesting course plan for STEM teachers around Florida. It's an interesting program combining science, paleontology (kids love fossils) and AI which is really trending these days (I promise this text was not written by ChatGPT). As part of this program the teachers will train an online AI program to recognize megalodon teeth from photos. After training one of the things they will do with the class is to see how the AI will do at recognizing partial megalodon teeth (AKA fraglodons). Since each teacher is given a number of fraglodons to use while teaching this program to their students we have a need for less than perfect megs. The teachers get to keep the fraglodons as they will (hopefully) continue to teach the program year after year. I've been able to contact some fossil hunters I know who would likely have a cache of broken megs looking for a good use. Those donations were helpful for the first cohort of teachers but the second cohort (new STEM teachers) are getting ready to work this program into this year's class and we are in need of new fraglodons for them to use. Bruce brought in some of the fraglodons they used while teaching the program this year so I could take a photo showing the variation in completeness. Note that these are all Florida fraglodons so they are all the usual grayish-black in coloration. Bruce mentioned that color is not a factor and broken megs of any color would be very welcome (even little corners of a root with just a bit of serrated enamel showing). He said that they could really use around 100 fraglodons so I'm putting this out to the forum to see if any of you have some of these less than perfect teeth sitting around in your collection looking for a higher purpose. If you think you have some fraglodons that would help this year's STEM teachers get kids interested in AI and fossils, please contact me via PM. Thanks in advance for all who have something they'd like to contribute. Cheers. -Ken
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A Few Recent Finds at Penn Dixie, a shallow marine Devonian Site in upstate NY
Biotalker posted a topic in General Fossil Discussion
Super folks and fossils! I had a decent trip to Penn Dixie with the experts recently and thought I would share a few finds. The first is the lower third of a crinoid calyx. I measures 4 cm and has an intact stem attachment segment. Aside from stems, its the first decent crinoid part I have found since 2015. I am fascinated by the geometry of the echinoderm organization- 6 around the stem, them 12 around the next whirl, makes we wish I had the entire calyx.- 8 replies
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L.S., Hopefully the collective knowledge of TFF community will once again prove able to identify something that has stumped me. This time I need your help with these curious stem fragments! A good friend of mine purchased these at a mineral show on the US mainland. The specimens potentially originate from Kane County, Utah, but this provenance is far from bulletproof. It is quite likely, however, that they come from somewhere within the USA. The stems exhibit a hollow centre, with a ribbed internal surface (pith structure?). None of the specimens show nodes or other signs of axial segmentation, however. The cross-sections (both rough and weathered as well as polished) show seemingly regularly spaced vascular structures. The larger "pores", especially, are quite striking. Scale on images is in centimetres. If the Kane County provenance is correct, then a Mesozoic age seems likely. But, again, provenance is very much in question still! Has anyone on TFF seen this type of petrified stems before? Any information you could provide would be very much appreciated! Thanks, Tim
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Found this object on a piece of shale. I suspect it might be a crinoid stem but it's really hard to see very much detail as it's so small. There is a trilobite when I split the piece in half in case that helps, though I'm looking for some more experienced eyes to help me out with id, thanks!
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- crinoid
- ordovician
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I know how Crinoid columnals looks like, but which are the features of other echinoderm classes (Rhombifera, Diploporita,...)? Image of a crinoid columnal mould (scale bar 5mm).
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Upper ordovician, n-e Italy. Scale bar 5mm. I'm not sure of crinoid stem (12-13) or ambulacra, Rhombifera stem, Rhombifera stem lumen,...(6-14)
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From the album: Prae's Collection (REMPC)
Fossil Plant Stems Devonian Catskill Sandstone Catskills, New York, USA -
From the album: Late Jurassic echinoderms of European Russia
Ulyanovsk Oblast, Volgian-
- pentacrinus
- stem
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Received in an opal parcel, i have been told this is a fossil, maybe of a plant stem. If so, i would like to at least put a definite name of some sort on it. Any and all help is appreciated! feel free to ask any questions! Thank you! IMG_2225.MOV
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Hi all Im trying to label the morphological parts of a Lepidodendron stem in thin section for my course. I have found a half decent resource online BUT it is unreadable due to the resolution. I was wondering if anyone was confident enough to clear up the labelling lines for me? pic attached. cheers
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- lepidodendron
- palaeobotony
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I have heard that cystoids had stems like crinoids. Is that True? And can u find the stems? Here are some cystoids i found. One of them has like a little hole that looks like a stem would connect. And the other looks like a cystoid with the stem. Not sure if it may be a worm trace. These were found in kinnekulle
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.also had this one since i was a kid-at that time I thought it was a tree branch (heh I was only 12 ) but now I would call it a "coral stem"?. the other coral septae/tabulae I have seen/found are always stacked together. Another south St. Louis county find. Any insight appreciated! Bone
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- bark
- mazon creek
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My fiance' found this in a pile of river gravel. Shes trying to find out if it's a crinoid stem, or a piece of a crinoid or possibly something else. Found in New Haven Missouri .
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Hi everyone this is Matthew again today in the creek I found this strange fossil I think it might be some kind of wood but I am not sure ? does anyone know what this is?
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During a trip I purchased a container of small marine fossils. I could identify almost all of them except for a few. Age, location, etc. unknown. Does anyone know what they could be? P.S. feel free to ask for more pictures.
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Just reassembled, crinoid stem with a bit of character. Probably Poteriocrinus sp., or maybe Rhabdocrinus, 20cm long, 10-12mm diameter, in a high energy deposit full of crinoid, bryozoan and brachiopod débris. It's unusually well articulated for this bed which mostly contains smaller broken bits of stems, arms and plates. There's a probably pathological swelling towards the top, above the radices. Last photo shows it as collected - very fragile and the main stem had largely broken into calcite cleavage fragments. Prepping so far was just a matter of letting it dry, then gluing, poking off shale with a needle and scrubbing (wet again) with a toothbrush. I'm letting it dry thoroughly and will then consolidate the sides and base of the block with thin paraloid solution. I might then air abrade a bit. Brigantian, Co. Durham, UK.
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Good afternoon everybody! During a fieldtrip in Silesia (Poland) last year I visited a rather large spoiltip looking for plant fossils. The spoils left behind by the mining company indicate they still use (or used) the old method to separate the coal from the surrounding debris, allowing the coal to be 'baked' (e. g. the presence of pyrite that turns into sulphuric acid -h2so4- under the influence of wind and rain, ...) something typical for the majority of spoiltips I visited in Western Europe. Unfortunately I have no detailed geological data on the age of the debris in the spoiltip but there is no doubt this is Silesian (upper Carboniferous) in age. I even tend to think this is Westphalian in age based on the fossils found, but let's keep it to upper Carboniferous to be sure. I found several species of Lepidodendron, some Eusphenopterids, both Stigmaria ficoides and S. stellata, etc... And this never-seen-before 'thing'. My initial thought was that this could be some sort stem/branch but, in my 20 years of collecting Paleozoic plants, I have never seen the repetative triangular pattern that covers the branch (or tube if you like). Perhaps this could be some sort of tracefossil? Since my ichnofossil-knowledge is extremely limited someone here can help me out? The height of the 'tubes' varies between 2 and 3mm. Have a nice day! Sven
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- carboniferous
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Hey I was wondering if the stuff next to the crinoid stem is part of the plant and not just smaller stems. All I find are crinoid stems so I was wondering if this was part of the actual crinoid. Found In Cincinnati.
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Found these In a landscaping rock
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- crinoid
- landscaping rock
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From the album: Marine Mammals
Scaldicetus sp? Found in Atacama Desert Region 3 of Chile Dated Messinian Stage of Miocene (≈7 mya) Measures 14 cm (5.5 inches)-
- acrophyseter
- atacama
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From the album: Beltzville State Park
Crinoid Stem The first fossil I found at the park. It was sitting on the bottom of the swimming area in waist-deep, crystal-clear water! Devonian Manhatango Formation Beltzville State Park, Pennsylvania-
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- crinoid
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