User talk:Phthinosuchusisanancestor

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m (Which one are we closer to?=)
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:We're closer to ''[[Haptodus]]'', which is a [[Synapsida|synapsid]] like us (not a reptile), while ''[[Petrolacosaurus]]'' is a [[diapsida|diapsid]] and so an actual reptile. We're not all that close to ''Haptodus'', admittedly, which is a very basal synapsid not too distantly related to ''[[Dimetrodon]]''.
:We're closer to ''[[Haptodus]]'', which is a [[Synapsida|synapsid]] like us (not a reptile), while ''[[Petrolacosaurus]]'' is a [[diapsida|diapsid]] and so an actual reptile. We're not all that close to ''Haptodus'', admittedly, which is a very basal synapsid not too distantly related to ''[[Dimetrodon]]''.
:I don't know where you derive the statement from that ''Petrolacosaurus'' has a "heart like ours". As a fossil animal, we wouldn't know anything about the heart structure of ''Petrolacosaurus'' other than what we could infer from its living relatives.[[User:Christopher|Christopher]] 11:50, 11 December 2008 (UTC)
:I don't know where you derive the statement from that ''Petrolacosaurus'' has a "heart like ours". As a fossil animal, we wouldn't know anything about the heart structure of ''Petrolacosaurus'' other than what we could infer from its living relatives.[[User:Christopher|Christopher]] 11:50, 11 December 2008 (UTC)
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:: BBC's ''Walking with Monsters'' claimed that ''Petrolocosaurus'' had a "complex" heart, which was the "template for our own". They gave no details or justification in the actual documentary - perhaps there's something on the website or in the book. Anyway, I thought it might be Phthino's source, or his/her source's source. [[User:Andreas|Andreas]] 16:20, 11 December 2008 (UTC)
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:: BBC's ''Walking with Monsters'' claimed that ''Petrolacosaurus'' had a "complex" heart, which was the "template for our own". They gave no details or justification in the actual documentary - perhaps there's something on the website or in the book. Anyway, I thought it might be Phthino's source, or his/her source's source. [[User:Andreas|Andreas]] 16:20, 11 December 2008 (UTC)

Revision as of 16:21, 11 December 2008

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