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  2. PAfo55il9uy started following Mahnmut
  3. pachy-pleuro-whatnot-odon started following Yet another mystery bone from the boulonnais (France)
  4. pachy-pleuro-whatnot-odon

    Yet another mystery bone from the boulonnais (France)

    pachy-pleuro-whatnot-odon replied to ADfossils's topic in Fossil ID

    My first thought is distal end of a pliosaur propodial too, not only going by shape, but also frequency of their finds in this region. These propodials can have varying shapes depending on species, with some the distal end in some species being somewhat offset from the central axis. In plesiosaurs, in contrast, the flares on either side are usually more equally balanced, yet not typically rounded, as in pliosaurs, since in plesiosaurs the paddle digits interlock with the propodial. (source) Also compare with these paddles on display at the Paläontologische Sammlung, MUT Tübingen. All this having been said, I'm very interested in what exactly you mean with "are chunky on one side and flatter on the other side"...
  5. PAfo55il9uy started following oilshale
  6. FossilNerd
    Awesome! Congrats on the epic find!
  7. PAfo55il9uy started following JohnBrewer
  8. PAfo55il9uy started following paleoflor
  9. PAfo55il9uy started following Troodon
  10. PAfo55il9uy started following Tony Eaton
  11. badbetty
    badbetty joined the community
  12. Jeffrey P started following Spiny productid, Eomarginifera longispina, Mississipian UK and Lower Eagle Ford, Britton formation trip 4/23/23
  13. Jeffrey P
    Gotta love the Britton F. for its unique fauna. You scored some excellent finds. Those crab carapaces are incredible! Congratulations and thanks for sharing them.
  14. Jay-bow

    Mazon Creek Tree Bark?

    Jay-bow replied to Jay-bow's topic in Fossil ID

    For the record this specimen was collected at Tipple Hill at Mazonia. Other than ironstone and coal, what types of rock are one likely to find there? I did notice a fair amount of what appeared to be granite around the site.
  15. Jeffrey P
    Spiny brachiopods are among my favorite fossils and that one is truly awesome. Congratulations, and thanks for sharing it.
  16. Darktooth

    Peace River 4/24/2024 (lots of 4s)

    Darktooth replied to Shellseeker's topic in Fossil Hunting Trips

    Great finds Jack! The tooth is pretty nice!
  17. Darktooth

    Miocene fish?

    Darktooth replied to cck's topic in Fossil ID

    Without trying to throw fire on the flame, I would like to point out one thing that may be helpful for members in the future. A few members have talked about how there appears to be bone like structure when you zoom in and wasn't noticed at first. This is a prime example of why CLEAR CLOSE-UP PICS, are important when trying toget an ID. Personally on my end the pics are not clear enough for me to say wether it is definitely bone or rock.
  18. Della
    Della joined the community
  19. Top Trilo
    Adam is spot on. There are three data points for each member (each horizontal line is for a member) The line starts with when the member joined the forum (the horizontal axis goes from June 2007 to April 2024). The line is blue until they receive the month they receive the MOTM award. Then the line is red until their last post, the line stops on whenever their most recent post is. There is not really a vertical axis it is more like a bar graph where each line is a member rather than a numerical data point. I just started at the top with the first MOTM and went in order from there. For example, here is @Randyw's line, the 14th from the bottom. He joined the forum in May of 2019, won MOTM in December of 2022, and his most recent post is from April 2024 so the blue line is the duration of time between joining and receiving MOTM, the red line is the duration of time between receiving MOTM and his most recent post. Each vertical grey line is January of each year.
  20. digit
    Keep us in the loop if you learn anything. Cheers. -Ken
  21. Tidgy's Dad

    Ptychodus is a lamniform

    Tidgy's Dad replied to ThePhysicist's topic in Fossil News

    Very interesting indeed.
  22. Randyw
    LOL! Wich one is me?
  23. TRexEliot
    @Shellseeker Unfortunately, I think just cosmetically similar, but thank you for keeping an eye out! Today ended up not working for my meeting with Dana from the NJSM, but I will talk to him tomorrow, and hopefully he'll have some ideas.
  24. ThePhysicist started following Ptychodus is a lamniform
  25. ThePhysicist

    Ptychodus is a lamniform

    ThePhysicist posted a topic in Fossil News

    Today a study was published on many exceptional body fossils of the durophagous shark Ptychodus, revealing it to be a lamniform - the same order as the great white, megalodon, etc. For a long time this shark's taxonomic placement was uncertain. The authors also conclude it was a high-speed predator that preferred animals like turtles and ammonites for prey rather than benthic mollusks and crustaceans. Vullo R et al. 2024. Exceptionally preserved shark fossils from Mexico elucidate the long-standing enigma of the Cretaceous elasmobranch Ptychodus. Proc. R. Soc. B 291: 20240262. https://doi.org/10.1098/rspb.2024.0262 Figure 6. Life reconstruction of the tachypelagic lamniform shark Ptychodus in the early Turonian open marine environment of Vallecillo. Two individuals are shown preying on nektonic shelled organisms (i.e. an ammonite and a sea turtle) in a trophic hotspot. Artwork by Frederik Spindler. Figure 1. Fully articulated Ptychodus specimens from the early Late Cretaceous (Turonian) of Vallecillo showing the general morphology and anatomy of the genus. (a,b) Photograph (a) and interpretative line drawing (b) of MMSP CPC 3063, adult specimen of Ptychodus sp. (c,d) Photograph (c) and interpretative line drawing (d) of MMSP CPC 3064, juvenile specimen of Ptychodus sp. All to the same scale. Figure 3. Anatomical details of Ptychodus. (a) Scleral capsule showing tesserae, specimen MUDE CPC 3065. (b) Portion of articulated dentition, specimen MMSP CPC 3063. (c) Close-up on two teeth of the lower dentition (box in (b)), specimen MMSP CPC 3063. (d) Precaudal vertebral centrum showing parallel lamellae (white arrow), specimen MMSP CPC 3067. (e) precaudal vertebral centra and muscle remains (well-preserved myomeres plus scattered isolated myofibres), specimen MMSP CPC 3067. (f) Close-up on muscle tissues (box in (e)) showing myospeta (white arrows) and myomeres composed of myofibres (black arrows), specimen MMSP CPC 3067. (g) First dorsal fin, specimen MMSP CPC 3063. (h) Pectoral fin, specimen MMSP CPC 3063. (i) Tail portion showing second dorsal fin (white arrow indicating its origin), anal fin (black arrow indicating its origin) and proximal caudal fin skeleton, specimen MMSP CPC 3063. Figure 4. Cladogram (strict consensus tree estimated from the 6349 most parsimonious trees) showing the placement of Ptychodus within Elasmobranchii. Numbers in nodes follow the arrangement ‘node number: jackknife support/Bremer support’. Clades of interest for the relations of Ptychodus are colour coded.
  26. JD1969
    This certainly has the same look as those meteorites. Any thoughts?
  27. pachy-pleuro-whatnot-odon

    Fossilized jaw, no teeth.

    pachy-pleuro-whatnot-odon replied to KSBasque's topic in Fossil ID

    In the geosciences, you'd call that (heavily) mineralised
  28. Tidgy's Dad
    T The vertical lines show the years with the beginning of MOTM on the left. The first member of the month is the top line going left to right and then it is sequential going down to the most recent member of the month at the bottom of the graph. You can see from the blue that some members had to wait years to be awarded the honour, while others got it soon after joining. If the red line continues to the far right of the graph, then that member is still posting, so you can see when some members have left the forum and how long after getting MOTM. I think.......... Alex will correct me if I am wrong.
  29. pachy-pleuro-whatnot-odon

    Tooth found in Big Brook, New Jersey

    pachy-pleuro-whatnot-odon replied to abstractava's topic in Fossil ID

    Yup, that's a mosasaur tooth, alright! And from the subequal cross-section, pinched carinae and upwards thickening enamel, I'd say this is a prognathodontine mosasaur. Excellent find!
  30. Shellseeker
    Since Many find your tooth interesting.. I was searching for something else and found this...on a very well known auction site. Maybe just cosmetically similar.. maybe nothing
  31. pachy-pleuro-whatnot-odon
    In the context in which it was found, and the specimen being so osteosclerotic, I'd rather guess marine reptile, in which case rib would indeed be the most logical candidate - though limb bone remains a possibility as well. I'd write this of as chunk-a-saurus.
  32. Yesterday
  33. pachy-pleuro-whatnot-odon
    While this does appear to be real bone - and quite possibly theropod, due to it's being hollow - I doubt there'd be enough diagnostic features to determine what genus, let alone species, this bone came from. The best you could get out of this, I'd say, is "theropoda indet.", as this is a piece we'd mostly call chunk-a-saurus. It does appear to be a piece of long-bone, however, and therefore neither tooth nor claw.
  34. Fossildude19

    PLEASE HELP IDENTIFY- Could this be a fossil footprint?

    Fossildude19 replied to Jessclusively's topic in Fossil ID

    Could be a sedimentary structure of some sort, but I don't think it is a track. Eastern Tennessee's stratigraphy is too old for anything to have been around to leave this kind of a "footprint". Speaking of which, I know of no animal that would have left an imprint like this: But something does make similar marks. Flute casts. Link to image source
  35. TimWaits
    I found this fossil (?) at a local thrift store with a newspaper clipping taped to it about Tyrannosaurus Rex, with the implication that this is either a tooth or a claw. I haven't go a clue whether it is real or a fake. It is about 5" long and about 3" wide at the base. Any information would be greatly appreciated.
  36. Tidgy's Dad

    Peace River 4/24/2024 (lots of 4s)

    Tidgy's Dad replied to Shellseeker's topic in Fossil Hunting Trips

    Nice finds. That peccary premolar, if that is what it is, is super.
  37. DPS Ammonite
    Please give us a better explanation of this chart. It looks interesting. What is the label for the vertical axis? You might explain what a couple of the horizontal blue and red lines mean.
  38. Fossildude19

    JUST A ROCK ??

    Fossildude19 replied to roofer4life86's topic in Fossil ID

    I agree with Ironstone concretion. 9 Pictures is fine. 6 is what we usually ask for.
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