The term "cruciform plate" is not a standard anatomical term. It's possible you're referring to something else.

To help me understand, could you please provide more context? For example:

* What are you looking at? (e.g., a diagram, a real object, a medical image)

* What is the context? (e.g., a biology lesson, a medical procedure)

* What other information do you have about this "cruciform plate"?

With more information, I can help you find the answer.