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fossilized6s

Ordovician mystery piece. Help, please

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fossilized6s

Found this piece in Iowa yesterday while hunting trilobites. I've never seen anything like it. The six point symmetry with it's bulbous tips are very strange. And the fact that it is very water-worn doesn't help with an ID. I'm thinking holdfast or possibe starfish. 

 

What do you guys see? 

 

Scale in mm/cm

20170710_192342.jpg

20170710_192026.jpg

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Raggedy Man

Possibly a trace.

Fig-4-Trace-fossils-from-the-Daye-Formation-A-Chondrites-isp-from-D2-B.png.a02f16fce835ed7638f3006f8fbaa23a.png

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WhodamanHD

I could see trace or very very worn and broken starfish, although I'm not ruling out holdfast either. Now that I think about it, I'm really not that helpful. Hmmm...maybe the experts can help.

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fossilized6s

I don't think it's a trace fossil because of it's different preservation from the matrix. But that being said i still don't have a 100% ID, so i'm open minded. 

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Fossildude19

Reminds me of Asterosoma.

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Rockwood
Just now, fossilized6s said:

don't think it's a trace fossil because of it's different preservation from the matrix

With you completely on that. That one end in particular is too tube like for this taxa at least. 

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fifbrindacier

Hexactinellid ?

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Rockwood
6 hours ago, fifbrindacier said:

Hexactinellid ?

I think I do have a faint memory of something like this being called a sponge one time.

 

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TqB

It's close to some types of Brooksella which has more than one mode of origin I think, depending on where it's from.

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fossilized6s

Thanks for the suggestions, guys. I appreicate it and have looked into all of them. I now am thinking sponge or trace fossil, but i still can't find a 100% match. 

 

If anyone else has any thoughts I'm open to suggestions. 

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