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RE: FW: Feduccia et al. (2005) Critique [with uups]



That's okay, but the specimen described by Mayr et al. (2002) is NOT the same one described by Feduccia et al. (2005). Mayr et al.'s has scales and quills, Feduccia et al.'s has collagen/feathers/whatever.

Mickey Mortimer

From: "Mikko K. Haaramo" <mikko.haaramo@helsinki.fi>
Reply-To: mikko.haaramo@helsinki.fi
To: dinosaur@usc.edu
Subject: FW: Feduccia et al. (2005) Critique [with uups]
Date: Wed, 19 Oct 2005 09:36:07 +0300

All,

Doing a reverse-engineering, I accidentaly sended this message to Mickey
only,
when it was ment to the whole DML, sorry Mickey!

--Mikko Haaramo


> -----Original Message----- > From: Mikko K. Haaramo [mailto:mikko.haaramo@helsinki.fi] > Sent: 19. lokakuuta 2005 8:46 > To: 'mickey_mortimer111@msn.com' > Subject: RE: Feduccia et al. (2005) Critique > > All, > > Of the forementioned Psittacosaurus-specimen; > > Mayr, G., Peters, D. S., Plodowski, G. & Vogel, O., > 2002: Bristle-like integumentary structures at the tail of > the horned dinosaur Psittacosaurus. > -Naturwissenschaften: Vol. 89, #7, pp. 361-365 > > > --Mikko Haaramo > > > > -----Original Message----- > > From: owner-dinosaur@usc.edu > [mailto:owner-dinosaur@usc.edu] On Behalf > > Of Michael Mortimer > > Sent: 18. lokakuuta 2005 20:00 > > To: dinosaur@usc.edu > > Subject: Re: Feduccia et al. (2005) Critique > > > > Daniel Selvidge wrote- > > > > > >This Psittacosaurus is pretty amazing. A complete specimen with > > > >filaments preserved inside the ribs. > > > >Often preserved crossing one another, they do form herringbone > > > >patterns sometimes. They claim some filaments appear beaded and > > > >curved, which occurs in degraded collagen. > > > > > >Do we have to wait for their published work on the creature or are > > >there anymore references to it available. I haven't been > following > > >things recently and I'm a bit out of the loop on the new > discoveries. > > >Furthermore, the fibers are within the ribs? Couldn,t that > > leave a lot > > >of possibilities open. > > > > Well, this IS technically published work on the specimen. No other > > references are available besides comments in a couple other BAND > > papers citing 'dino-fuzz' on Psittacosaurus, which everyone assumed > > was referring to the quilled specimen. I didn't mean to imply the > > filaments were inside the rib bones, but rather that they > were between > > the ribs. > > > > > >Are these feathers? > > > >No, as we have the very well preserved quilled specimen that > > > >indicates psittacosaurs were fully scaled, including > over the rib > > > >region. Could this be a feathered juvenile of a scaled > > adult? It is > > > >half the size of the quilled specimen (and doesn't > > preserve quills, > > > >though this could be taphonomic). So I can't dismiss that > > > >possibility. > > > > > >Wonder if it could be a sort of juvenile quilling, and not > just soft > > >down? Oh well, I have no idea. > > >Pictures would definitely help here. > > > > The filaments don't look like the adult quills, so I'd say no. But > > who knows. > > > > Mickey Mortimer > > > > > >