palaeoenvironment

/P AE1 L AH0 IY0 OW0 N V AY1 R AH0 N M AH0 N T/
noun
  1. 1

    The past environment of an area during a given period of its history.

Source: https://en.wiktionary.org/wiki/palaeoenvironment, https://en.wiktionary.org/wiki/paleoenvironment