Paracoccus pantotrophus (Robertson and Kuenen 1984) Rainey et al. 1999 emend. Hördt et al. 2020 Nokhal T.H. Schlegel H.G. Taxonomic study of Paracoccus denitrificans. 1983 33 1 26 37 International Journal of Systematic Bacteriology Int J Syst Bacteriol 0020-7713 10.1099/00207713-33-1-26 Until 1999 this strain was listed as the type strain of Paracoccus denitrificans. The history of this strain is unclear.