RE: JP3 Thoughts (frilled Dilophosaurus revisited)

[rbi <rbi@dana.ucc.nau.edu>]

>>_Dilophosaurus_ specimens have preserved all of the muscle attachment scars
>>without any being eroded into obscurity? I would imagine that the muscle
>>attachment scars for a neck frill would not be very large.<
>No they would not, but there are enough cervicals from enough specimens to
>say that these scars didn't exist.

A warning about interpreting muscle attachments.  Muscles usually attach to
SMOOTH areas on bone, so it is very hard to interpret where they attached.
What are often interpreted as "muscle scars" are actually where tendons
attached.  These tendons may or may not have controlled muscles.

Regards,
Randall Irmis