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Another driveway find. Is this a sponge of some kind or possibly and bone from dorsal fin? Kind of looks in the shape of the ulna i cant find any reference on what an isolated one looks like. Can bones be calcified like this? i have no idea.

CF96503C-EE35-4C11-B063-C4C23BD35A79.jpeg

26516A89-EC37-49A0-B420-C540A9FD15EC.jpeg

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Something covered in an encrusting coral or bryozoan, methinks. 

How big are each of the zooecia / corallites? 

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In that case probably, though not certainly, a bryozoan. 

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I think it's just as good if not better.

That's a nice piece and I would be trying to identify the species.:)

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1 hour ago, Tidgy's Dad said:

I think it's just as good if not better.

That's a nice piece and I would be trying to identify the species.:)

Genus fistulipora?

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1 hour ago, ByronNWT said:

Genus fistulipora?

Maybe. 

I don't know your formation, I'm afraid. 

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Unfortunately there is next to zero info on fort simpson formation. Its mid to late devonian shallow ocean. There is a species 

Fistulipora mackenziensis from canada mid devonian... and im on the mackenzie river. Thats my guess and im sticking to it. 

:DOH:

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Sponge for me.

Demospongiae, Hadromerida. Probably family Suberitidae, genus Chaetetes.

Can you see Treatise online nº 58 Part E, Revised, Volume 4, Chapter 4A–B: HYPERCALCIFIED EXTANT AND FOSSIL CHAETETIDTYPE
AND POST-DEVONIAN STROMATOPOROID - TYPE DEMOSPONGIAE: SYSTEMATIC DESCRIPTIONS

from here https://www.researchgate.net/publication/257559077_Hypercalcified_Extant_and_Fossil_Chaetetid-Type_and_Post-Devonian_Stromatoporoid-Type_Demospongiae_Systematic_Descriptions

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Sponge of some kind was

first guess because the uniformality of the small pores witch also made

me think worn bone. I need to get. Abetter camera. Any tips on measuring and photographing small things like this?

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