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XB-STAGE-63
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Name: NF stage 49
XAO ID: 1000061 Definition: "Nieuwkoop and Faber stage 49, corresponding to a tadpole of age about 12 days at 22-24 Celsius and having the following external morphological criteria: Melanophores usually appearing around thymus gland and nerves and blood vessels of head; xantophores appearing on pericard. Forelimb bud distinct. Hindlimb bud somewhat longer, distal outline still circular, no constrictions at base. Melanophores appearing on dorsal and ventral fin. Length: 17 - 23 mm." |
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| Preceded By: NF stage 48 | Succeeded By: NF stage 50 |