3D objects and scene storage

I would like to know good examples of 3D objs and scene structures to store 3D data.

I am able to read/write Wavefront and LightWave object formats from my programs. However, in the specs I got from the internet, I don’t see how to store skeleton data or obj hierachy so I can store/read my objects from a standard file format.

Could anybody point me in the right direction?

Thanks in advance?

The file formats you’ve chosen don’t support hierarchies and animation. For some examples of hierarchy file’s have a look for some motion capture file formats (eg, bvh files). I’ve not found any format that supports all that I need so I use my own. Could have a look on sourceforge for some examples of file formats and model libraries.