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Sir_Andrius

Is this a sponge fossil?

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Sir_Andrius

Hello, my name is Andres. I found this in "La Pedrera beach" in Uruguay. At first I had no clue of what it was. I'm prone to think it is a sponge fossil, but would want help in this matter. I found it vaguely buried in the sand close to the shore. The sand of that beach is grainy and loaded with lots of shells of many mollusc species. If it is indeed a sponge fossil, what species it would be? Thanks in advance!

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Edited by Sir_Andrius

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ynot

Welcome to TFF!

It could be a sponge (not My field of interest), but it looks like a burrow cast to Me.

Wait for the sponge people to reply.

Tony

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Darktooth
19 minutes ago, ynot said:

Welcome to TFF!

It could be a sponge (not My field of interest), but it looks like a burrow cast to Me.

Wait for the sponge people to reply.

Tony

Beware of the Sponge people! BEWARE!

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Vieira

It looks like a burrow cast to me too..

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Guguita2104

It looks like a burrow,indeed:D!

I've already found some poriferans and this doesn't look like one.

 

Regards,

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Sir_Andrius

what kind of bug could have done it? a worm? wasp?

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ynot
Just now, Sir_Andrius said:

what kind of bug could have done it? a worm? wasp?

Shrimp would be the most likely but could have been many things.

Tony

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doushantuo

It COULD be a sponge,but a microscopical view would tell infinitely more.If diagenesis hasn't obliterated the microstructure,you might see spicules/desmas/scleres(=sponge needles).

Sponges have pores as well.

 

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Guguita2104
6 hours ago, Sir_Andrius said:

what kind of bug could have done it? a worm? wasp?

I agree with Tony.

This was probably made by some sort of  decapod (perhaps a mud shrimp).

 

Regards,

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Sir_Andrius

Thank you everyone for your feedback!

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fifbrindacier

I agree with a burrow cast, i have some similar to yours.

 

Regards.

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