I want to know the answer to the following question:
Where did the two authors work together as paleontologist?
All the background I'm provided with is that "Their 1997 book, Classification of Mammals above the Species Level, is the most comprehensive work to date on the systematics, relationships, and occurrences of all mammal taxa, living and extinct, down through the rank of genus, though recent molecular genetic data challenge several of the higher level groupings.". Is that enough to answer the question?