Not Included in Publication Author List Approximately a year ago, I finished a graduate degree under an abusive and bullying advisor.  I successfully defended my thesis, and agreed to stay around for a while longer to finish a publication based on that same work, which would have consisted of rewriting a section of the thesis into a form more suited for a journal.

Due to my degrading mental health, and the continuing abusive behavior of my advisor, I strongly informed him that I was no longer willing to work with him, and provided him with my writing so far and all the data needed to finish the paper.  My advisor continued to harass me after leaving, and I eventually reported him to the relevant people for his behavior, but I was met with blatant disbelieve and nothing seems to have been done about my complaint.  

The paper I started was never published.  Now, I discover that my advisor and another graduate student have published a paper which depends heavily on my work, but I am not included in the author list, nor is my thesis cited.  Rather, I'm given mention in the acknowledgments section for "helpful discussions and collection of preliminary data."

This was the primary subject of my thesis!  It was not "collection of preliminary data."  They did gather additional data and do additional modeling, but my thesis laid the basis for this new paper, and they use my experimental designs.

As for my question, is it ethical that I was not included in the list of authors, nor was my thesis cited?  If unethical, is there anything I can do about this?  I didn't expect to be listed as first author on the paper, but I would like more acknowledgment for my work than a brief mention at the end of the publication.

EDIT:

To clarify some matters in response to answers/comments given below, my thesis was published and has been available online for a bit over a year, whereas this new paper was published about two weeks ago.

I understand that I don't have a monopoly on my academic work; anyone can build on the results of anyone else.  I'm also aware that both my advisor and the university have rights to my thesis and any other work performed with university resources.  I've been involved in the process of academic publications, ranging from being listed as first author, to being included further down the list as a collaborator, so I have some understanding of how this works.

My complaint is that I'm not given what I think is appropriate credit, e.g., my thesis is not listed in the references despite the fact that they used large amounts of content from it.
If your advisor is a well-known researcher in the academic community, it is very unlikely that anyone will believe you. Even if they do, they would prefer their own advantage and prefer not to ruin their relationship with this advisor.

You have two choices: you can move on and forget about it. Or, you can do what you think is the right thing. If you are confident about the story, send an email to the department head, look at the research ethics and IP department in your university and also include them. Ideally, there are written procedures in such department on how to make a complain about such issues. He/she will know about your complain from this department.