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XB-STAGE-71
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Name: NF stage 57
XAO ID: 1000069 Definition: "Nieuwkoop and Faber stage 57, corresponding to a tadpole of age about 41 days at 22-24 Celsius and having the following external morphological criteria: Pigment-free spot appearing above \"Stirnorgan\". Angle of elbow more than 90 degrees; fingers stretched out in forelimb atrium, their length about 7 times their breadth. Length: 75 - 105 mm." |
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| Preceded By: NF stage 56 | Succeeded By: NF stage 58 |