Hi again,
Didn't think I should bother you guys with another sponge, but this is a bit peculiar and I can't find anything about sponges on sticks?
This was found in the Kristianstad Basin, Cretaceous period. It is heavily erroded and mineralized, but probably a sponge.
It seems to have a circular growth around what seems to be a stick of some sort. They seem proprotional, so I figure they grew together, but they might not be the same spieces? (the stick + the sponge).
The images does not make the fossil justice, but it is a very voluminoes sponge with bulges that reminds of glass sponge.
The stick is circular in the bottom and more flatt in the top. It might not have reached tremendous heights...?
Questions:
Would a sponge grow on a stick?
Why would a sponge need to reach height if it is not drawing energy from sunlight?
How would a sponge like this pump water? I can't find any "sucking holes"
Shouldn't a sponge with sticks be more branching? More than one branch?
All the best/ Linus