Nautiloid Chert Lenses

Pr0teusUnbound

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whenever i hunt through breaker rocks from the Detroit River Group/ Silica Shale formation i find these formations called "lenses". theyre supposed to be abiotic chert infills but im almost positive that some of them are nautiloid fossils.





ive got a couple dozen more of these. ask nicely and ill post them:cool2:
 

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Architeuthoceras

Architeuthis
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Upper right looks like a Horn Coral. Upper left has something in it, can't say for sure. The other two just look like chert nodules (what I call them) with rinds and or cores.

Post more please.
 

Pr0teusUnbound

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okey dokey

this is the rock that my supposed ammonoid came from


here are some other interesting ones


ive been meaning to upload the whole set as a gallery or post a link to my Detroit River Group Gallery on deviant art but i wasnt sure if the forum had limits for that sort of thing.
 

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Pr0teusUnbound

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ive also noticed that some brachiopod internal molds are made of made of piebald-colored matrix similar to lenses.

Spirifer brachiopod fragments on left and right


flip side of last
 

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DWhatley

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As long as links are relevant to your topic (i.e. not spam or sales) you are free to (encouraged) post them. We do our best to be a ceph reference site so prohibiting links would not make sense toward that goal. To post a link, copy the link to your clip board, type a title for the topic (like: My Detroit River Group Gallery ), highlight the typed topic words, click the world with a chain icon and then paste the link into the pop-up (you may need to allow pop-ups for the site and have to click the icon a second time is they are initially turned off).
 


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