Fossil wood slab from Java, would like to have more information

[Kees]

Hello everybody,

 

Recently I bought a fossil wood slab from a stone dealer. I liked it because I think it shows some signs of rotting or other damage.

All the dealer knows is that is is from Java and that the locals hunt fossil wood by poking the soil of rice paddies with iron bars. When the bar hits rock they can tell by the sound whether it is a rock or a fossil.

As there are many sites in the island of Java I would like to know whether  a more exact location can be determined.

To me  it looks like the slab was taken at a bifurcation of the main stem or trunk and a side branch. The side branch is black in the middle and appears to have lost its growth rings. My guess is that this is caused by rot. The main stem looks to be affected as well or is it bark growing into the wood or is part of the wood charred? Any thoughts which species of tree it might be?

Information about this or anything else you'd like to share is welcome. Pictures were taken using an iPhone, the detailed ones using a magnification app.

Edited April 28 by Kees
adding a question, spelling

[Kees]

Some more pictures of the other side slab.