Translations:Help:Project sources/17/en

• [$1 FishBase] (Vertebrata excluding Amphibia, Reptilia, Aves, Mammalia)
• [$7 Catalog of Fishes] (Vertebrata excluding Amphibia, Reptilia, Aves, Mammalia)
• [$8 Amphibian Species of the World] (Amphibia)
• [$9 The Reptile Database] (Reptilia)
• [$10 Checklist of the Turtles of the World, 2021] (Testudines)
• [$12 Iverson, 2022 Checlist of Types] (Testudines) - nb: is a checklist of type specimens for turtles
• [$13 IOC World Bird List] (Aves)
• [$14 BirdLife International Data Zone] (Aves)
• [$15 Mammal Species of the World] (Mammalia)
• [$16 Database of World Animal Name] (Mammalia)
• [$17 Zoonomen] (Aves)