I have published a fair bit on marsupials in the past, the big problem being that the articles concerned (published during the ScienceBlogs and Scientific American years of Tet Zoo history) have been paywalled, ruined, or made very very hard to find in online archives. In particular, the Thylacoleo article reminded me that I published two articles on the diversity and phylogeny of diprotodontians way back in October 2011. But no matter what I tried, I couldn’t find them. Ultimately, I owe...