Homeomorphy in Cephalopods

Discussion in 'Cephalopod Fossils' started by Architeuthoceras, Aug 31, 2005.

  1. Architeuthoceras

    Architeuthoceras Architeuthis Staff Member Moderator

    Nov 19, 2002
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    somewhere under the desert sky
    Simulation of one ammonite shell morphotype by another. The fossils below are Schloenbachia varians from the lower Cenomanian (Late Cretaceous) from This Site.


    And another with a ventral view from this site

    The attached photos are Forresteria alluaudi from the Coniacian (also Late Cretaceous but a few million years younger), the robust, spinose morphotypes are very similar, and at least for me, they would be very hard to differentiate by shell shape alone.

    Attached Files:

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