Joseph Leidy
"Satherium piscinarium" was originally named "Lutra piscinaria" by Joseph Leidy in 1873. In 1937, it was recombined as "Satherium piscinarium" by Barbour and Schultz. Recombination again by Bjork in 1973, Kurten and Anderson in 1980, and most recently Willemsen in 1992.