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Re: Are dinosaurs really reptiles? (2)

To: DML <dinosaur@usc.edu>
Subject: Re: Are dinosaurs really reptiles? (2)
From: Dann Pigdon <dannj@alphalink.com.au>
Date: Mon, 28 Apr 2008 09:37:13 +0930
In-reply-to: <004101c8a8bf$eec44840$e90e10ac@LENOVO>
References: <542793.96765.qm@web83711.mail.sp1.yahoo.com> <054f01c8a8a3$53f32b40$650fa8c0@Villandra2>
Reply-to: dannj@alphalink.com.au
Sender: owner-DINOSAUR@usc.edu

David Marjanovic writes:

So pangolin scales were completely re-evolved?

They're just fused hairs, like rhino horns.

I'm not sure I'd describe them as 'just' fused hairs. Rhino horns are relatively simple structures in comparison. Pangolins have a complete suit of overlapping scales that any self-respecting reptile (or pinecone for that matter) would envy.

Does anyone has access to this paper?

J. Tong, L.Q. Ren and B.C. Chen 1995 "Chemical constitution and abrasive wear behaviour of pangolin scales". Journal of Materials Science Letters 14(20): 1468-1470 http://www.springerlink.com/content/p32728721265622v/

___________________________________________________________________

Dann Pigdon
GIS / Archaeologist              http://geo_cities.com/dannsdinosaurs
Melbourne, Australia             http://heretichides.soffiles.com
___________________________________________________________________

References:
- re: Are dinosaurs really reptiles? (2)
  - From: David Peters <davidpeters@att.net>
- Re: Are dinosaurs really reptiles? (2)
  - From: Dora Smith <villandra@austin.rr.com>
- Re: Are dinosaurs really reptiles? (2)
  - From: David Marjanovic <david.marjanovic@gmx.at>

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