What Kind of Fossil Did I Find in Central Spain?

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DrDu
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Today, I found the following fossil in calcareous deposits from cental spain which are probably from the upper cretaceous. The little pores visible on the outside, make me think off a coral. What do you think?
15038551866751743981544.jpg
1503855294497-1315794350.jpg
 
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  • #2
DrDu said:
Today, I found the following fossil in calcareous deposits from cental spain which are probably from the upper cretaceous. The little pores visible on the outside, make me think off a coral. What do you think?View attachment 209879
that first image gave me a hint of an ammonite/nautiloid series fossil with the curved ridged structure ... very hard to tell
the second image with the porous structure ... just not enough detail/remains of the original animal

something along the lines of these fragments specially when looking at the top left sample

cc.jpg
cheers
Dave
 
  • #3
Dear Dave,

just came back from vacations. The fossil is somewhat porringer shaped, which I do not expect from an ammonite. Also there is no helical structure.

Cheers
 
  • #4
DrDu said:
porringer shaped, which I do not expect from an ammonite. Also there is no helical structure.
Bacculite?
 
  • #5
The bowl shaped depression looks like one side of a bivalve shell.
 
  • #6
Finally, I had the opportunity to show the pictures to a professional palaeontologist in a museum. He identified the fossil as a sponge, most probably from the group of hexactinellids.
 
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Glad you got back to us with the answer.
 
  • #8
DrDu said:
Finally, I had the opportunity to show the pictures to a professional palaeontologist in a museum. He identified the fossil as a sponge, most probably from the group of hexactinellids.
Thanks for the update :smile:

Dave
 

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