From studies of the bony house of the brain, which is the cranium(插入语1), located in the back of the skull(插入语2), come what scientists know about dinosaur brains.(主句。当然,是个倒装句,具体成分暂时不管)
each of which has fingerlike projections poking through the opening, called the taste pore,(插入语) located at the top of taste bud.(主句,located是主句的一部分,所以有资格作后置定语,其修饰对象不存在歧义。因为中间的插入语可以忽略)