ScottBlooded Posted April 21, 2023 Share Posted April 21, 2023 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. Link to comment Share on other sites More sharing options...
cck Posted April 21, 2023 Share Posted April 21, 2023 Hunk of bryozoan if it’s Devonian is my opinion 1 Link to comment Share on other sites More sharing options...
Fossildude19 Posted April 21, 2023 Share Posted April 21, 2023 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. 1 3 Tim - VETERAN SHALE SPLITTER VFOTM - APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
ScottBlooded Posted April 21, 2023 Author Share Posted April 21, 2023 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. Link to comment Share on other sites More sharing options...
Rockwood Posted April 21, 2023 Share Posted April 21, 2023 I think the texture may be more like a trilobite cheek. ' can't say I'm sure of it though. 1 1 Link to comment Share on other sites More sharing options...
doushantuo Posted April 21, 2023 Share Posted April 21, 2023 (edited) Tim might be on the right track there \edit: "placoderm" Edited April 21, 2023 by doushantuo 1 Link to comment Share on other sites More sharing options...
ScottBlooded Posted April 21, 2023 Author Share Posted April 21, 2023 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. 1 Link to comment Share on other sites More sharing options...
piranha Posted April 21, 2023 Share Posted April 21, 2023 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. Whiteley, T.E., Kloc, G.J., Brett, C.E. 2002 The Trilobites of New York. Cornell University Press, 380 pp. 5 Link to comment Share on other sites More sharing options...
ScottBlooded Posted April 21, 2023 Author Share Posted April 21, 2023 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. 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! 1 Link to comment Share on other sites More sharing options...
piranha Posted April 22, 2023 Share Posted April 22, 2023 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. 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. 3 Link to comment Share on other sites More sharing options...
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