Talk:Cephalopoda

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m (tidy)
(phylogeny suggestion~~~~)
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==Phylogeny(Dendrogram) ==
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Fellow cephabuffs.
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Forgive me first for sticking this on top, but I figured it'd be more in the limelight. If anyone cares to respond it might be a good idea to place whatever directly underneath. So much for procedure.
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I may be a little confused as to how to read the dendrogram under Phylogeny. Setting aside the list of  genera un assigned to any higher taxa the list of suprafamilials at the bottom could be misleading.  May I suggest the following ememdation, with explanation.
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''Plectronoceras'' in an excellent place to start, even for the whole shabang, being the oldest known cephalopod, known from as early as the Franconian, lower Yenchou, of China. I added the Ellesmerocerida which are the root stock of all post Cambrian cephalopods.  The Endocerida and Actinocerida are shown slightly differently to allow for the added Orthocerida. All three are independently derived from the Ellesmerocerida. The Orthocerida provides a place for the Bactrida to attach. Stemming from the Bactida are three independent groups, the Ammonidea, Aulacocerida (Belemnoidea) , and Coleoidea. The line of direct decent from the Ellesmerocerida continues to the Nautilida, which along with the Coleoidea contains the most recent cephalopods.
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  ''Plectronoceras''
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    `-+- Ellesmerocerida (''added'')
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      |---Endoceratoidea
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      |---Actinoceratoidea
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      |--+-Orthocerida (''added'')
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      |  `-+-Bactritida [Bactritoidea]
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      |    |--[Ammonoidea]
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      |    |-- Aulicocerida
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      |    `--[[Coleoidea]]
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      `--[[Nautilida]]
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Regards[[user: John M|John]] 3/10/09
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Hi anyone and everyone.
Hi anyone and everyone.

Revision as of 22:46, 10 March 2009

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