Echinoid fossil ID

[dren]

This fossil was found in Malta's southeastern coast.

 

I found a pretty nice maltese website:

https://continentalshelf.gov.mt/en/Pages/Geological-Map-of-the-Maltese-Islands.aspx

According to which the fossil was found in "upper globulina limestone (miocene , burdigalian to early langhian)": Limestone ID

 

The ruler is in centimeters.

 

Any ideas on what exact type of echinoid could this be?

 

Thank you so much!

 

 

 

Edited February 4, 2022 by dren

[caterpillar]

Take a look at this doc

http://etheses.dur.ac.uk/9003/1/9003_5934.PDF?UkUDh:CyT

[Ludwigia]

Looks like a Schizaster to me and I'm sure you can find the species in the above paper.