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Found 15 results

  1. Need help with ammonite ID

    I was in Moab, Utah last week and stopped in at the Moab Rock Shop. They had lots of fossils so I picked up this nice little ammonite about 17 mm diameter for a few dollars. It was labeled as an Orthosphinctes from the Jurassic of the Atlas Mountains of Morocco, but I'm not convinced. I can't find much online about Orthosphinctes but what I do find shows the whorl cross section as being much more oval in shape. I found the thread below from 2014 but it doesn't seem to have answered the poster's original question of Orthosphinctes vs. Perisphinctes. Can anyone help?
  2. Perisphinctes sp.

    I have this ammonite fossil from the genus Perisphinctes, and I would like to know the species. I bought it online from a guy who said it was from a site (which I do not remember) in Madagascar. Can someone help me?
  3. Ammonite ID? Perisphinctes?

    Hi there guys, I got this ammonite as part of a set from Madagascar. I would like to know if this is a Perisphinctes. What caught my attention is that it seems to be more "larger" than the regular Perisphinctes I'm used to, at least. Let me know your thoughts.
  4. Perisphinctes

    From the album Bobby’s ammonites

    I got this very nice Perisphinctes from the Teylers Museum In Haarlem The Netherlands fantastic museum indeed
  5. Perisphinctes

    From the album Bobby’s ammonites

    Very large Perisphinctes from Madagascar
  6. Swedish ammonite?

    Hello, I recently recieved an unidentified ammonite as a present and was told it came from Gotland, Sweden. However, I cannot find any information on ammonite finds from Gotland, and it looks a lot like a Madagascan Perisphinctes to me. Any thoughts? The scale is in centimeters.
  7. Ammonite - PERISPHINCTES?????

    Hello! I went fossil hunting at our local fossil/mineral/curio emporium. (Which I am SO lucky to live near!!!) I got several nice fossils!!! This Ammonite from Madagascar... I am thinking Perisphinctes - do you concur?
  8. I'm thinking about buying this, I love sliced ammonites and have never seen one quite like this one, is this actually rare at all?
  9. Perisphinctes?

    This fossil is an Ammonite which I think is Perisphinctes. This fossil came from the santiago formation in San Luis Potosi, Mexico, which is middle Oxfordian.The sanTiago formation is below the Taman formation which is were the Ochetoceras came from. There has been fossil coming out of the formation which are Perisphinctes (Middle Oxfordian ammonite biostratigraphy of the Lower Santiago Formation at Taman, San Luis Potosi, Mexico — with notes on Mexico–Caribbean ochetoceratins) or Bioestratigrafía de amonitas del Oxfordiano medio de la parte basal de la Formación Santiago en Tamán, San Luis Potosí, México – con notas sobre ochetoceratinos de México y el Caribe, in Spanish. Here's photos of my specimen Close up of the fossil
  10. Is this Dactylioceras or Perisphinctes?

    Hi Everyone, I purchased this ammonite from a shop in Colorado several years ago. The only identification they provided was that it was an ammonite from Morocco. I believe them because the opening has been cut flat and filled in like ammonites from Morocco typically are. I have tentatively identified it as a Dactylioceras but I'm not sure, another possibility could be Perisphinctes. There also could be other possibilities, too. Since I don't have information on where it was collected, I don't know what age it comes from. I think I read an older post on this forum that the ribs on Dactylioceras only split in two, but on Perisphinctes they sometimes split into three, but I haven't been able to find that post again (Ludwigia, I seem to remember you were the one who made that comment). This one looks like some of the ribs split into 3, which might suggest Perisphinctes. Also I've included a photo showing a suture line, which I understand can be used to make an identification, but I haven't found anything on the web that gives examples of suture lines for different families. Can anyone help with the identification? Thanks for the help, this forum is amazing!
  11. Perisphinctes sp.

    From the album Ammonites

    Perisphinctes sp. Jurassic, Madagascar
  12. Perisphinctes ammonite

    From the album My fossils collection

    Perisphinctes.sp ammonite from Cretaceous period Madagascar
  13. Perisphinctes on Display Stand

    From the album Ammonites & Ammolites

    Perisphinctes sp Age: Cretaceous Locality: Madagascar
  14. Perisphinctes Ammonite 02

    From the album Ammonites & Ammolites

    Perisphinctes sp. Age: Cretaceous Locality: Madagascar
  15. Perisphinctes Ammonite 01

    From the album Ammonites & Ammolites

    Perisphinctes sp. Age: Cretaceous Locality: Madagascar
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