How did the nucleus of eukaryotic cells evolve?
I hope these papers by Wilson and Dawson (2011) and Devos et al. (2014) will help you.

In summary these two review provide evidence for the following statements:


The nuclear pore complex is well conserved with some regions of divergence.  
The nuclear lamina appears quite variable between major supergroups.  
Centrosomes are ancient structures but exhibit a complex evolutionary history.  
There is evidence for prokaryotic ancestors of some nuclear components.
Analysis of divergent organisms is essential to fully understand nuclear biology and its origins.