Humanoïd shape invocation and any humanoid form

[Waldham]

Hello, I have a question about Humanoïd shape invocation from Dragon Magic.

Lesser; 3rd

You can assume any humanoid form, as the change shape special ability. You can remain in the form for up to 24 hours or until you take a standard a new form or return to your natural form.

Does Humanoid refer to having a human-like shape ?

There are WOTC rules about polymorph from articles. Does someone have it ?
Polymorph : Partie I
Polymorph : Partie II
Polymorph : Partie III
Polymorph : Partie IV

Humanoïd form :
Fey
Giant
Humanoïd
Monstrous Humanoïd
Outsiders*

* Many, but no all outsiders have humanoïd form.

So is it possible to take the shape of a geriviarh ?

Thanks for your future answer.

[Stratovarius]

Humanoid means the Racial type here, not the body shape.

[Waldham]

And not monstrous humanoid ?

[Stratovarius]

Correct