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An unknown item from Etobicoke Creek (Upper Ordovician) and a shiny item


Monica

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Hello once again!

 

Upon closer examination of some items I recently collected from Etobicoke Creek in Mississauga, Ontario (Georgian Bay Formation, Upper Ordovician), I have found a couple of items I'd like your thoughts on.

 

Item #1:  Found on the same rock as a monoplacophoran (Cyrtolites ornatus), the unknown item is tucked underneath some matrix:

 

View of the whole rock:

DSC02447a.thumb.JPG.4391659b3e0e5ed1a0d4065ee3c823fc.JPG

 

Close-ups of the unknown item:

DSC02447b.thumb.JPG.c2dba7866e0b5a0c132559461e56c75b.JPGDSC02448.thumb.JPG.95c88bbf90ff02accd01b1c169a9e9aa.JPG

 

Continued...

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Item #2: There is something shiny on a rock and I'm wondering if it's the living chamber of an orthoconic nautiloid (likely Treptoceras crebriseptum).

 

View of the opposite side of the rock - contains crinoid stems:

DSC02450.thumb.JPG.cd2f1fa91ee7ec1c3c1be482196069e7.JPG

 

View of the side of the rock with the shiny part - I've boxed the shiny part in red (you can also see some sparkly pyrite in the upper right corner of the rock):

DSC02451.thumb.JPG.5ee9fb71e85bcdeddb865fb9faa4d47c.JPG

 

Close-ups of the shiny part - a rock flaked off of this area, showing some additional prettiness underneath:

DSC02452.JPG.09a3a4420bb5ea152a0bafa30ac25583.JPGDSC02453.JPG.78218b486e7d3792dcf1e2a842879ed6.JPG

 

Thanks for your help!

 

Monica

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The shiny part is pyritized, I think. It reminds me of a pyritized wood I found few months ago, it was shiny like the part of your rock above. 

 

20200605_212020_compress87.thumb.jpg.949afef0dcd17a34daae8e08da8fb4ec.jpg20200531_153911_compress23.thumb.jpg.61a300199a86ab5dfc4fcfa67a5b3d35.jpg2020-06-06-182904.thumb.png.9dc7c9e70f44393f4a213a0265073463.png2020-06-06-182736.thumb.png.f6df2a67b5fbdf90f15a4cd934cee9af.png

 

I do not know what fossil item #1 and 2 is, sorry!

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