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Green River: They're Not All Shorebirds


Auspex

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I've finally identified this fossil: it is most of the elements of the right wing of a member of the (extinct) order Sandcoleiformes. They were similar to the extant Mousebirds of Africa, but less specialized, and have a cladistic affinity to Woodpeckers. Filling the niches of today's passerines, they seem to have been out-competed when the latter evolved, much the way that modern Carnivores replaced the Creodonts.

It is interesting to note that the surface of this plate bears the patina of weathering; it lay exposed to the elements for some time, but was found before much degradation of the bones could occur.

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"There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant

“Try to learn something about everything and everything about something.” - Thomas Henry Huxley

>Paleontology is an evolving science.

>May your wonders never cease!

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Very cool! :D The preservation is fantastic!

Tha tighin fodham, fodham, fodham!

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...do you think there might be more bones buried in the matrix?

Well, I haven't had it X-rayed, but with the Green River shale, 3-D stuff usually telegraphs its topography. The slab is only 3/8" thick, so I'm pretty sure nothing is playing hide & seek.

This bird completely disarticulated before being covered (or it could have been uncovered, disturbed, and recovered a time or two within a couple months of death. In any case, the rest is lost.

"There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant

“Try to learn something about everything and everything about something.” - Thomas Henry Huxley

>Paleontology is an evolving science.

>May your wonders never cease!

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It sure feels good to finally figure out what something is....

Sure does! Since circumstances don't allow me to dig my own, the thrill of discovery comes from research and putting a name to something. This one led me on several rabbit chases over the past year and a half; I could see the affinities to the Piciformes, but I wasn't looking in the "extinct order box". Serendipity played a big roll. :)

"There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant

“Try to learn something about everything and everything about something.” - Thomas Henry Huxley

>Paleontology is an evolving science.

>May your wonders never cease!

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