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Small Devonian shard. Honestly no clue.


ScottBlooded

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Devonian, Needmore formation (so mid Devonian), West Virginia. Usually if I’m asking I can say “it’s a trilobite part, but whose?” Or at least “I feel like it has to be a bryozoan but I’m not sure” but for this piece I have literally no clue. This is both the interior and exterior mold pieces and some got torn off from one to the next when I split the shale. However, you can tell it has six raised dots in kind of a dice pattern (like the 6 side of a six sided die). The texture/shape reminds me of the way trilobite bits present out here but that very even six dot ornamentation is…bizarre. Anyhow, something like 3mm at the widest. As always thanks for your time.

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I don't think bryozoan on this. Looks more like a piece of placoderm armor, to me.

 

But I wouldn't rule out some sort of trilobite. Maybe @Kane  or @piranha will chime in here.

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    Tim    VETERAN SHALE SPLITTER

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10 minutes ago, Fossildude19 said:

I don't think bryozoan on this. Looks more like a piece of placoderm armor, to me.

 

But I wouldn't rule out some sort of trilobite. Maybe @Kane  or @piranha will chime in here.

I was going to say I also would be surprised if bryozoan were the answer but I definitely never considered placoderm. That would be extremely cool.

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I think the texture may be more like a trilobite cheek. ' can't say I'm sure of it though. 

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Tim might be on the right track there \edit: "placoderm"

Edited by doushantuo
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13 hours ago, Rockwood said:

I think the texture may be more like a trilobite cheek. ' can't say I'm sure of it though. 

See I thought trilobite cheek for texture and shape as well. There’s an even ridge following what would be the outer edge, if it were a free cheek. I’ve just never seen that ornamentation before, what with the evenly sized and spaced raised dots.

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This puzzle piece is correct in scale and appears to fit along the eye socle of Kettneraspis tuberculata.

The image for plate 34: Kettnerapsis callicera  from "The Trilobites of New York" is incorrectly labeled.

 

image.thumb.png.7f935e3cd2cc5bdaa7d3313207c2d99e.png

 

Whiteley, T.E., Kloc, G.J., Brett, C.E. 2002

The Trilobites of New York.

Cornell University Press, 380 pp.

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image.png.a84de26dad44fb03836a743755df237c.png

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5 hours ago, piranha said:

This puzzle piece is correct in scale and appears to fit along the eye socle of Kettneraspis tuberculata.

The image for plate 34: Kettnerapsis callicera  from "The Trilobites of New York" is incorrectly labeled.

 

image.thumb.png.7f935e3cd2cc5bdaa7d3313207c2d99e.png

 

Whiteley, T.E., Kloc, G.J., Brett, C.E. 2002

The Trilobites of New York.

Cornell University Press, 380 pp.

Man, as always but exceedingly so in this case, you’ve got such a good eye. Looks like a good match, I found a much more complete, much smaller Kettneraspis while out here on this same trip(not sure of species as he doesn’t look like a perfect match to tuberculata). Although if that little bit accounts for that small a portion of his cheek, that’s a pretty big Kettneraspis (at least for me out here). Will have to keep searching this new exposure for something more complete and larger. Thank you!

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The figured Kettneraspis  specimen posted above is approximately 3cm in length. If the 3mm size of the fragment is not a perfect fit with a large Kettneraspis, there is another possibility with large tubercles from the Needmore Formation: Coronura aspectans.  Find some associated elements to make a confident determination. mail?url=http%3A%2F%2Fmail.yimg.com%2Fok%2Fu%2Fassets%2Fimg%2Femoticons%2Femo71.gif&t=1682122413&ymreqid=23281213-8dc1-3cff-1cd4-a7004401c700&sig=B4dhLg695mplPU_5edtH1g--~D

 

image.thumb.png.db3402f49317a136b3b3cf9d1abd798a.png

 

Burns, J. 1991
Fossil Collecting in the Mid-Atlantic States with Localities, Collecting

Tips, and Illustrations of more than 450 Fossil Specimens.
The Johns Hopkins University Press, 216 pp.

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image.png.a84de26dad44fb03836a743755df237c.png

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