"Ammonite eaten by fellow cephalopod"

Discussion in 'Cephalopod Fossils' started by tonmo, Nov 26, 2010.

  1. tonmo

    tonmo Titanites Staff Member Webmaster Moderator

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    Apologies to Hajar; I was trying to merge his thread with octobot's and they both ended up getting deleted :oops:. Here's the info Hajar posted:

    Story here, abstract here.
     
  2. Hajar

    Hajar Haliphron Atlanticus Registered

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    No probs! I have another ammonite (Ataxioceras) with a bite taken out of the back end of the body chamber (attached, there's a better photo of this somewhere, but I can't find it).

    Ramses' catch and bite technique makes this story quite vivid:

     

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  3. Architeuthoceras

    Architeuthoceras Architeuthis Staff Member Moderator

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    You gotta collect a lot of fossils for a study like that. I have found very few that are broken in the same spot as those, so I guess the squid over here were either non-existent or just didn't eat ammonites.
     
  4. Hajar

    Hajar Haliphron Atlanticus Registered

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    but over in North Dakota, South Dakota and Montana in the Cretaceous scaphitid ammonites "healed injuries, as well as lethal injuries, are common on adult shells, especially on the adapical end of the body chamber."
     
  5. Hajar

    Hajar Haliphron Atlanticus Registered

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    A couple of fossils from Lyme Regis to illustrate the story. The little bitten Promicroceras is 2cm across. The coleoid is 15 cm long.
     

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  6. Pr0teusUnbound

    Pr0teusUnbound GPO Registered

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    does the paper rule out predatory snails as possible culprits? i remember reading that limpet boreholes on ammonites can be misaken for sharkbites.
     

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