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Re:"The X Digit"...a Pteroid bone??

>In a message dated 1/23/99 10:55:30 PM EST, larryf@capital.net writes:

>>   When it involves  the use of different morphological structures
>>fine, but when the same skeletal constituants are involved I become
>>extremely doubtful, especially when the types being compared are close
>>together in phylogeny. (in this case being both archosaurs). 

>Don't be too sure that pterosaurs are archosaurs...

Sounds like you don`t think so......why?