The current taxonomy version is ott3.6 (click for more information). See the OTT documentation for an explanation of the taxon flags used below, e.g., extinct
species Anura sp. BOLD:AAO1757 ncbi:973881 incertae_sedis (OTT id 4132734)
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life > cellular organisms > Eukaryota > Opisthokonta > Holozoa > Metazoa > Eumetazoa > Bilateria > Deuterostomia > Chordata > Craniata > Vertebrata > Gnathostomata > Teleostomi > Euteleostomi > Sarcopterygii > Dipnotetrapodomorpha > Tetrapoda > Amphibia > Batrachia > Anura