The current taxonomy version is ott3.7 (click for more information). See the OTT documentation for an explanation of the taxon flags used below, e.g., extinct
order Cuculiformes ncbi:8940 (worms:196059, gbif:1492, irmng:11247) sibling_higher (OTT id 212171)
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life > cellular organisms > Eukaryota > Opisthokonta > Holozoa > Metazoa > Eumetazoa > Bilateria > Deuterostomia > Chordata > Craniata > Vertebrata > Gnathostomata > Teleostomi > Euteleostomi > Sarcopterygii > Dipnotetrapodomorpha > Tetrapoda > Amniota > Sauropsida > Sauria > Archelosauria > Archosauria > Dinosauria > Saurischia > Theropoda > Coelurosauria > Aves > Neognathae