Re: [dinosaur] Dinosaur blood clots detected with UV autofluorescence in drowned Triceratops (free pdf)

To: Ben Creisler <bcreisler@gmail.com>, dinosaur-l@usc.edu

Subject: Re: [dinosaur] Dinosaur blood clots detected with UV autofluorescence in drowned Triceratops (free pdf)

From: Tyler Greenfield <tgreenfield999@gmail.com>

Date: Wed, 30 Sep 2020 12:09:51 -0500

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Note that this paper was authored by a creationist (Mike Armitage) who has been trying to publish these claims for years. There are even hints to his creationist beliefs in the abstract ("Moreover, our ultraviolet fluorescence (UVFL) study of Triceratops horn, rib, vertebra, and frill thin sections shows extensive clotting in most vessel canals, probably as a result of asphyxia while drowning").

On Wed, Sep 30, 2020 at 11:39 AM Ben Creisler <bcreisler@gmail.com> wrote:

Ben Creisler
bcreisler@gmail.com

Not yet mentioned:

Free pdf:

Mark H. Armitage and Jim Solliday (2020)
UV Autofluorescence Microscopy of Dinosaur Bone Reveals Encapsulation of Blood Clots within Vessel Canals.
Microscopy Today 28: 30-38
DOI: https://doi.org/10.1017/S1551929520001340
https://www.cambridge.org/core/journals/microscopy-today/article/uv-autofluorescence-microscopy-of-dinosaur-bone-reveals-encapsulation-of-blood-clots-within-vessel-canals/8762E671960898DAC303973A5A2A93F6

Remarkable discoveries such as condensed chromatin in duckbill dinosaur cartilage and newly presented discoveries of dinosaur vascular veins, venule valves, and nerve fibers (this report) warrant study of global dinosaur remains for preserved soft tissue (dST). Dinosaur osteocytes feature dendritic projections (filipodia) of lengths up to 18 Âm, while osteocytes collected from a Triceratops horn have lengths of 25 Âm or longer. While preservation methods for dST involve the degradation of sugars into glycation end products and the employment of highly oxidative hydroxyl radicals to "fix" tissues, we note that lengthy and narrow osteocyte filipodia show no signs of hydroxyl radical infiltration into the lacuna-canalicular network. Moreover, our ultraviolet fluorescence (UVFL) study of Triceratops horn, rib, vertebra, and frill thin sections shows extensive clotting in most vessel canals, probably as a result of asphyxia while drowning. Further UVFL autofluorescence study of dinosaur bone sections is vital for characterization of dinosaur blood clots.

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