Ammonite ID requests

Discussion in 'Cephalopod Fossils' started by mshiel, Jul 24, 2008.

  1. mshiel

    mshiel Larval Mass Registered

    Joined:
    Jul 20, 2008
    Messages:
    3
    Likes Received:
    0
    Hello,
    I have two ammonite fossils that I got at a generic gift shop - they could be from anywhere in the world. The proprieter guessed Madagascar but admitted that he didn't really know. If anyone could help me with ID's for them and regions that they came from I would be very grateful. Here are links to photos of the fossils:

    these first two are of the same fossil - first is polished inside, second is the outside.

    http://www.pbase.com/mshields/image/100446118/small
    http://www.pbase.com/mshields/image/100446159

    This is the inside of a section of the other specimen

    http://www.pbase.com/mshields/image/100446163

    Thanks very much,
    Martin Shields
     
  2. monty

    monty Colossal Squid Staff Member Supporter

    Joined:
    Mar 8, 2004
    Messages:
    4,887
    Likes Received:
    11
    :welcome: to TONMO

    I am thinking your name is familiar; are you on the ceph email list?

    I haven't a clue on the ID, I'm afraid, but hopefully Phil, Kevin, and the other fossil gurus will be by shortly... If there is any part of the outside suture lines visible on the second fossil (or if you have the other half of the first one), a picture of that might be helpful as well.
     
  3. mshiel

    mshiel Larval Mass Registered

    Joined:
    Jul 20, 2008
    Messages:
    3
    Likes Received:
    0
    Not on the email list - am new to the site. But thanks for the welcome.

    The outside of the second one is just solid stone - you can't see any contours of the shell.

    Martin
     
  4. Architeuthoceras

    Architeuthoceras Architeuthis Staff Member Moderator

    Joined:
    Nov 19, 2002
    Messages:
    2,391
    Likes Received:
    94
    Location:
    somewhere under the desert sky
    :welcome: Martin,

    I'm afraid there just isnt enough to go on to get a proper ID for your ammonites. The best thing to do would be search Ebay, or other like sites, and see if you could match it with something there.
     
  5. mshiel

    mshiel Larval Mass Registered

    Joined:
    Jul 20, 2008
    Messages:
    3
    Likes Received:
    0
    OK, thanks for taking a look.
    From what you can see, is it possible to assign the correct order, suborder or even family?

    Thanks again for your time!

    Martin
     
  6. Architeuthoceras

    Architeuthoceras Architeuthis Staff Member Moderator

    Joined:
    Nov 19, 2002
    Messages:
    2,391
    Likes Received:
    94
    Location:
    somewhere under the desert sky
    I can only guess, It looks like a Middle Jurassic Stephanoceratid. But there are a lot of Homeomorphs of these and it could be anything from the late Jurassic or Cretaceous.
     
  7. willsquish

    willsquish Blue Ring Supporter

    Joined:
    Jun 8, 2007
    Messages:
    48
    Likes Received:
    2
    Bay state replicas seems to have a copy of exactly what I see in pic 2, from madagascar also.
    http://www.baystatereplicas.com/invertebrates.htm

    They label it as Perisphictes sp.
    Age: Jurassic.
    Location: Mahajahga, Madagascar

    Think that's a typo. I believe it's spelled Perisphinctes.

    Hope this helps!
     

Share This Page