Xenbase is undergoing scheduled maintenance Wednesday, June 14 and Thursday, June 15, 2023. Xenbase will be unavailable on those days.

Click on this message to dismiss it.
Click here to close Hello! We notice that you are using Internet Explorer, which is not supported by Xenbase and may cause the site to display incorrectly. We suggest using a current version of Chrome, FireFox, or Safari.
Summary Stage Literature (58) Attributions Wiki

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."

Preceded By: NF stage 48 Succeeded By: NF stage 50