M.W. De Laubenfels is noted for one of the earliest publications positing that dinosaurs (and others) might have met their demises from the after-effects of an asteroid strike. However, he lacked the evidence that the Alvarezes had to give the theory a little more credibility.
Biographical info on him is practically non-existent, although a number of papers authored by him can be found online.
Anyone??? (Since he appears to have been born in the 1890s, it’s a safe bet he’s no longer among the living.)
Interestingly, when I saw this thread, I thought, “I know someone named M. DeLaubenfels…I wonder if there’s any connection.” So I asked him about it last night. Turns out M.W. DeLaubenfels was his grandfather. I’ll forward this thread to him and see if he has any comment.