Placet, Francois
Francois Placet was a 17th century French abbot, who, in 1668, published a small booklet (in French) entitled “The break up of large and small world’s, as being demonstrated that America was connected before the flood with the other parts of the world.” A Scientific American article relates how “He argued that the two continents were once connected by the lost continent of “Atlantis” and the flood of the bible separated them.” (a)
The idea of the biblical flood to explain the shape of continents remained very popular for the next 250 years.