Streptococcus castoreus Lawson et al. 2005 Lawson P.A. Foster G. Falsen E. Markopoulos S.J. Collins M.D. Streptococcus castoreus sp. nov., isolated from a beaver (Castor fiber). 2005 55 2 843 846 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijs.0.63433-0 15774672