"Fibrobacteres" Cavalier-Smith 2020 Dataset NCBI Taxonomy Classification phylum Fibrobacterota class Fibrobacteria Name Homonyms Fibrobacteres "Fibrobacteres" Cavalier-Smith 2020 "Fibrobacteres" Garrity and Holt 2012 "Fibrobacteres" Garrity and Holt 2001 Fibrobacteres