>>Maybe

loType.BaseType.Name

Untested. And it only gives the immediate parent - if the actual class has a deeper hierarchy it won't work.....
>
>Yes, as you can see in the other message, this is what I used. And, in the way I am using it on, this is only class from base classes from the framework.

As long as you are sure it's safe.
If someone can sub-class your base class there's nothing to stop them deriving from the derived class - in which case your code would break. If your class is directly derived from Object then you could identify it like this:

Dim parent As Type = t ' where t is type of actual class
While True
	If parent.BaseType = GetType([Object]) Then
		Exit While
	Else
		parent = parent.BaseType
	End If
End While

'Parent is now your base class

But at that point it probably makes as much sense to pass in the name of the class anyway....