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Ambystomatidae
Amphiumidae
Cryptobranchidae
Hynobiidae
Plethodontidae
Proteidae
Rhyacotritonidae
Salamandridae
Sirenidae
Oedipina alleni
Allen's Worm Salamander
Range
Costa Rica and Panama
IUCN Red Book
Least concern
CITES
No listing
First described
Taylor, 1954