Leon0437 Posted July 23, 2022 Share Posted July 23, 2022 Hi, I am new to this forum, so please excuse my total ignorance on the topic of fossils. I have always loved them, but don’t know much about them. I am currently staying in Dubrovnik, Croatia, and found some weird looking stones with dotted patterns. I am aware that this could just be a bunch of random dots, but it looks like a creature of some sort, in my opinion. One of them looks like it has legs as well. Does anyone know what this could be? Thanks! Link to comment Share on other sites More sharing options...
supertramp Posted July 23, 2022 Share Posted July 23, 2022 I see a resemblance with pic n. 7 from this link https://natureinfocus.blog/2011/05/27/pebbles-with-holes-made-by-boring-sponges/ ciao 1 2 Link to comment Share on other sites More sharing options...
Lone Hunter Posted July 23, 2022 Share Posted July 23, 2022 Welcome to TFF from Texas! I'm not going to be of any help though, not sure if those are molds of something or feeding traces maybe, I think I see crinoid stem segments but someone familiar with your area will give you better ID. Link to comment Share on other sites More sharing options...
DPS Ammonite Posted July 23, 2022 Share Posted July 23, 2022 (edited) These have been in the ocean so sponge borings make sense. Note marine coiled “worm” tubes. Edited July 23, 2022 by DPS Ammonite 1 My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere. Link to comment Share on other sites More sharing options...
westcoast Posted July 23, 2022 Share Posted July 23, 2022 I agree, these are examples of bioerosion, common on limestone coasts. Sponges are just one potential maker, these ones may have been made by cyanobacteria. Link to comment Share on other sites More sharing options...
todor.dbk Posted July 23, 2022 Share Posted July 23, 2022 yes yes, that's what a type of sponge does, it lives in the canals it creates and dissolves.. Here you will find a lot of such rocks, this is probably a smaller part of a once larger stone.. Cheers ! Link to comment Share on other sites More sharing options...
abyssunder Posted July 23, 2022 Share Posted July 23, 2022 There are clionaid borings ( Entobia isp.) on the surface of the carbonate pebbles. Nice examples! " 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. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now