“Being oviparousanamniotes, frogs typically spawn their eggs in bodies of water. The eggs then hatch into fully aquatic larvae called tadpoles, which have tails and internal gills. A few species lay eggs on land or bypass the tadpole stage altogether.”
Per https://en.wikipedia.org/wiki/Frog
“Being oviparous anamniotes, frogs typically spawn their eggs in bodies of water. The eggs then hatch into fully aquatic larvae called tadpoles, which have tails and internal gills. A few species lay eggs on land or bypass the tadpole stage altogether.”
So maybe not the first, but I am no frogologist.