How do we credit "Adapted by" when profiling?

Example;
The Bride of Frankenstein (1935)

Mary Shelley is credited as "suggested by the original story written by" (do we credit OMB?) 
Just below Mary Shelly in the credits we get "adapted by" William Hurlbut & John Balderston (do we credit these as writers or leave them out?)
Then finally we have William Hurlbut credited with "Screenplay" (easy enough profiled).

Have at it guys.....


Edit;
When considering I would profile like this;

Mary Shelley - Original Characters by
William Hurlbut - Original Story by
John Balderston - Original Story by
William Hurlbut - Screenwriter

Just read your edit - yes, that's a better way of doing it! 

Quoting SailorRipley:

Quote:
I would say your proposed profile is correct, Berak.

What I know about this is, Balderston wrote an original outline basing it on a mere passage from the novel when the creature asks for a mate. Universal then hired Hurblut to expand the outline and flesh out the plot. This used to be known as Screen Story. Hurblut then worked in 4 subsequent drafts into the final screenplay.

So,

Mary Shelley - Original Characters by
William Hurlbut - Original Story by
John Balderston - Original Story by
William Hurlbut - Screenwriter

sounds about right.

What would I do without you guys?! 

The knowledge of this community combined must baffle even Hollywood...     

Any suggestions for...

Patsa, I would contribute that this way:

Eric Taylor: Screenwriter
Samuel Hoffenstein: Screenwriter
John Jacoby: Screenwriter
Gaston Leroux: Original Material by

John Jacoby's participation is evidently under the "Screenplay-header". Infact, I just recently contributed a similar case (movie: "We're not Married!") - quote from my contribution notes...

"Dwight Taylor's credit changed from "Writer" to "Screenwriter" (source: opening credits of the movie; we see on screen "Screenplay: Nunnally Johnson, Adapted: Dwight Taylor". IMHO Taylor's contribution must therefore be that of screenwriting.)"

... and nobody opposed this change with No-votes.

Quoting northbloke:

Quote:
I have to admit I don't read it that way. I read it as:
Screenplay by Eric Taylor and Samuel Hoffenstein, [based on an] adaptation by John Jacoby.
That, to me, makes it more OMB than screenwriter.

To be honest, I never even considered that possibility  but of course you might be perfectly correct. I have considered credits like these to mean adapted screenplay, i.e. Taylor and Hoffenstein provided the screenplay, which Jacoby then adapted - I guess the fact that "adapted"-credit here (as in my contribution I mentioned) seems to be under the Screenplay-header(?) makes me think the way I do.

Quoting Draxen:

Quote:
To be honest, I never even considered that possibility  but of course you might be perfectly correct. I have considered credits like these to mean adapted screenplay

That's why I said I'd be tempted to leave him out altogether. It could be read to mean either way! 

Quoting northbloke:

Quote:
I have to admit I don't read it that way. I read it as:
Screenplay by Eric Taylor and Samuel Hoffenstein, [based on an] adaptation by John Jacoby.
That, to me, makes it more OMB than screenwriter.

I agree.