1867 F. W. Putnam in 1 108 The Spade-footed Toads..are more uncertain in their appearance, being governed entirely by the dampness or dryness of the season.
1891 at Scaphiopodinæ A sub-family..containing the American spade-footed toads.
1901 VIII. 162 The ‘Spade-footed Toad’, which occurs throughout the whole of Central Europe.