They are just numbered differently. If you check the text against the text of the # psalm before/after the # you are looking for, it is there.
I can’t tell you off the top of my head which are combined, & which divided. But you still have 150 Psalms. They contain the same textual material in total…
We have to remember that while chapter & verse references are wonderful conveniences, they are an artificial construct added to Sacred Scripture, for ease in referencing. They were not in the early texts, certainly…
