Mystery nautiloids from NY shore of Lake Ontario

Discussion in 'Cephalopod Fossils' started by Phil, Mar 11, 2006.

  1. Phil

    Phil Colossal Squid Supporter Registered

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    Can anyone identify this excellent fossil of two nautiloids?

    They look like Orthoceras to me, though maybe they could possibly be Dawsonoceras which is also found in the Lockport?

    Any advice will be forwarded on to Lawrence Fortunato who was lucky enough to find this lovely fossil. Thanks Lawrence!
     

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  2. sorseress

    sorseress Colossal Squid Supporter

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    They look like orthoceras to me too. Speaking of which, I picked up a cool example at the Tucson mineral and gem show. Supposedly from the Atlas Mountains.
     
  3. Architeuthoceras

    Architeuthoceras Architeuthis Staff Member Moderator

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    :smile: Nice fossils. They do have the transverse annulations of Dawsonoceras, although maybe not strong enough.
    Leurocycloceras is another possibility, it has less distinct annulations than Dawsonoceras.

    I cant tell if the chambers were filled with calcite by the nautiloid or if they were filled after burial. One would need a better look at the siphuncle and cameral deposits for a better ID. The third specimen (near the bottom right) seems to show the camera and the siphuncle but I cant see it well enough.
     
  4. Animal JoBio

    Animal JoBio Cuttlefish Registered

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    nice fossil though...
     

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