the root (no rank)
Viruses (domain)
ssDNA viruses (subkingdom)
Microviridae (family)
isometric ssDNA phages (common name)
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bacteriophage phi-K (species)
Chlamydia psittaci phage Chp1 (species)
Chlamydiamicrovirus (genus)
Microvirus (genus)
Spiromicrovirus (genus)