How to spell TETHYIDEE correctly?

The word "tethyidee" is likely a misspelling of the word "tethyside", which pertains to the ancient Tethys Ocean. Other possible suggestions for correcting this misspelling include "tethysidee", "tethyuside" or simply "Tethys". It's important to consider the context in which the misspelling was made to arrive at the best correction.