A new non-Mesozoic paper that might be of interest. What kind of skin basal synapsids had (dry and scaly or glandular ) has been something of a mystery.
Given the finding of scales, I wonder if the identification of the trackmaker is correct. I'll have to read the paper.
Grzegorz Niedziedzkiab & Maciej Bojanowskic (2012)
That's Grzegorz Niedźwiedzki & Maciej Bojanowski, with superscript letters for the footnotes that give their institutional affiliations.