|Female Brazilian tree frog (Flectonotus pygmaeus) with|
brood pouch enclosing the developing embryos
(Mauricio Rivera Correa ShareAlike 2.5)
In hemiphractids, the embryo develops on the back of the mother either in a mucous-filled depression or in a closed pouch - as shown above for a Brazilian tree frog (the embryos are under the bumps).
|Froglet of a marsupial frog (Gastrotheca ovipera) showing |
the external gills. From Nathan 1932 (here)
|Marsupial Frogs by William E. Duellman 2014|
Johns Hopkins University Press ISBN 978-1-4214-1676-5
For other fun facts on frog reproduction see this video.