Children (8 direct children, 8 direct and indirect children):
Pyrococcus furiosus
Pyrococcus abyssi
P. abyssi
Pyrococcus horikoshii
P. horikoshii
Pyrococcus woesei
P. woesei
Pyrococcus yayanosii
Pyrococcus endeavori
Pyrococcus glycovorans
Pyrococcus kukulkanii