DR KEITH WHEELER / SCIENCE PHOTO LIBRARY DR KEITH WHEELER / SCIENCE PHOTO LIBRARY
Tadpole. Tadpole of the common frog (Rana temporaria). This tadpole is at the four leg stage (twelve weeks). The front legs have broken through the operculum but the tail is still complete. Its horny jaws are shed forming a wide mouth gape. The tail will eventually be absorbed by phagocytic cells in the blood.
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