[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Re: Ptero fuzz distribution?
----- Original Message -----
From: "Jaime A. Headden" <firstname.lastname@example.org>
To: "jrc" <email@example.com>
Sent: Thursday, July 27, 2006 5:10 AM
Subject: Re: Ptero fuzz distribution?
There is presently no evidence that I am
aware of that indicates that they are hair-like structures (structures
function similar to that of hair, whatever their actual makeup).>
I would discount this, either, but I do not think they should be assumed
be actinofibril remnants, either, as a null condition.
There are two features,
and their nature should be independantly ascertained. However, in
*Beipiaopterus*, actinofibrils are present as well as the "hairs," so
independantly viable means of seeing which structure is which on the same
The following sentence is a speculation. It is possible that the structures
are remnants of a disintegrating support structure for the actinofibrils, a
mechanism for controlling or distributing the forces acting upon the
actinofibrils between the actinofibrils. If so, the structures could be
used to modulate and/or redirect the load paths in the membrane
Dermis where the 'fibrils are preserved as impressions, though,
don't seem to have preserved traces of the "hairs",
I agree and think that is significant.
yet even, integument seems
lacking in MANY Solnhofen fossils as well, to make those skin
fossils difficult to quantify.
I agree again.