I recently started a discussion on this website called mallorca fossil identification please. I asked what the worm things were in this brachiopod and you said they are in fact worm burrowings. I was just wondering, is it rare to to find brachiopods with worm burrowings? The reason I am asking this question is because I was looking on a fossils website, and they had an ammonite with worm burrowings, which they described as very rare, but it was older than mine ( jurassic) and mine is neogene.
Could someone who specialises or knows a lot about brachiopods, like mike answer this question? Also is it in limestone or a different type of rock?
Ammonites with worm burrowings are hard to find because they usually come from below the tide line and have spent some time in the marine environment.
I recently posted some images of ammonites that had suffered from these critters but I cannot find the message that I posted them in - so I have attached some images below of an ammonite that nature almost took back!
The ammonite is a Dactylioceras tenuicostatum, it measures over 10cm from the Lower Jurassic, Upper Lias and is about 200 million years old.