I found these fossils last weekend in Praia da Consolação, near Peniche (Kimmerdgian layers) and I labelled them as solitary corals.However I read in some sites that rudists are pretty common in that location. For that I'm a bit confuse, because I never understood the main differences between rudists and solitary corals.
Can someone explain me these (and Id my fossils)?
Regards,
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