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Help on those Id's!


Guguita2104

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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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The difference between a solitary rugose coral and a rudist, in a few words, is that the latter is a marine heterodont bivalve with totally different morphology.

Here are comparative examples: Rudist post-17588-0-04363900-1450898124_thumb.jpgpost-17588-0-32743400-1450898129_thumb.gif Rugose coral post-17588-0-23189200-1450898163_thumb.jpg

What you have there are Horn corals (rugose corals), IMO, but if you said they are from Kimmeridgian layers probably they're solitary Scleractinian corals (Stony corals), not Rudists.

" 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. "

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Thanks to abyssunder from the grand stands as well. Boy, Rudists really can look a lot like horn coral at times.

Bill

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