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teredinidae burrow casts?


Limestone

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Found these fossil hunting on a small beach in northern puerto rico - lower miocene limestone. are these shipworm fossils? 

I found the rock with the hole on the same beach. 

 

Second picture is the inside of the biggest piece

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They could be that only if the support material was wood.

" We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. "

Thomas Mann

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Thank you for your reply

Most were found isolated from the matrix. I dis see some on matrix that I didnt take home. 

Maybe a type another type of worm? 

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Does like like an annelid worm tubes, what type I don't know.

“...whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been and are being evolved.” ~ Charles Darwin

Happy hunting,

Mason

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They could be very well Kuphus species.
Here are some examples from Zammit Maempel, George. Kuphus melitensis, a new teredinid bivalve from the Late Oligocene Lower Coralline Limestone of Malta. Contr. Tert. Quatern. Geol., 30(3-4): 155-175

 

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" We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. "

Thomas Mann

My Library

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