the root (no rank)
Eukaryota (domain)
Metazoa (kingdom)
Chordata (phylum)
Craniata (subphylum)
Vertebrata (no rank)
Gnathostomata (superclass)
Sarcopterygii (class)
Tetrapoda (no rank)
Amniota (no rank)
Sauropsida (no rank)
Testudines (order)
Cryptodira (suborder)
Emydidae (family)
Pseudemys (genus)
Pseudemys nelsoni (species)
[hide inferior taxa]