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Cambrian Trilobite Verification


minnbuckeye

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A Fossil Forum friend sent me a few Georgia rocks to split. They were full of trilobites and bits. I believe these are all Aphelaspis brachyphasis but I understand this site has other species as seen in this information :

 

 


Locality 1 is an outcrop in Murray County. The matrix is mudstone and the researchers report “very abundant specimens” of Aphelaspis brachyphasis often as body clusters. 

Locality 1, Murray County:
Agnostus inexpectans
Aspidagnostus rugosus 
Glyptagnostus reticulatus
Aphelaspis brachyphasis

Could any knowledgeable person verify the identities of these trilobites. As I said , it seems like they are all A. brachyphasis but the HUGE size differences to the trilobites leave me wondering whether I am missing something. Thanks.

 

 

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I think the second to last picture contains A. brachyphasis as well. They can indeed come out very tiny! I have one that measures less than a half a millimetre, and that I could only make out better under the microscope. 

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Some lovely Aphelaspis there, I've got a few of these and I love 'em :wub:

I think all the same species except, maybe, just maybe in the centre of that second from last piece, could that be an agnostid cephalon ? I can"t see it clearly enough 

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11 minutes ago, Tidgy's Dad said:

Some lovely Aphelaspis there, I've got a few of these and I love 'em :wub:

I think all the same species except, maybe, just maybe in the centre of that second from last piece, could that be an agnostid cephalon ? I can"t see it clearly enough 

It might, hard to say.

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11 hours ago, minnbuckeye said:

DSC_0520-002.thumb.JPG.a53168c4859e3881bca5696f2260ef76.JPGDSC_0521-001.thumb.JPG.8b2a42306415690b56367ab620108222.JPGDSC_0528-001.JPG.c4bd3e691f29f4bca875a7697f97784c.JPGDSC_0531-001.JPG.30719b0a6896f2c509d15e49003e122c.JPG 

 

 

It is especially the second to last picture that confuses me. They are TINY!!!!

All a whole bunch of Aphelaspis. They're everywhere in the Conasauga!

Every single fossil you see is a miracle set in stone, and should be treated as such.

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