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Found this sponge on the beach in Beach Haven, NJ. Wondering if anyone could tell me if its modern or Pleistocene (I ask bc I have heard of Pleistocene fossils being found off of NJ's coastline

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Two more angles

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Not a sponge but the holes are cause by a boring sponge, I think Cliona is the name of the boring sponge. The part you are holding is the center of a gastropod.

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i think its a shell too

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32 minutes ago, Al Dente said:

Not a sponge but the holes are cause by a boring sponge, I think Cliona is the name of the boring sponge. The part you are holding is the center of a gastropod.

Thanks. I'm guessing it would be modern then?

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I agree with gastropod columella.

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23 minutes ago, bjkibz said:

Thanks. I'm guessing it would be modern then?

I would say so.

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Thanks all for the help.

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I love poriferans:wub::wub:!
That's entobia (Clionaid sponges eroded a gastropod shell element- a process called bioerosion),IMO .

Regards,

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