having existed from the beginning; in an earliest or original stage or state; "aboriginal forests"; "primal eras before the appearance of life on earth"; "the forest primeval"; "primordial matter"; "primordial forms of life"
Of or pertaining to the lowest beds of the Silurian age, corresponding to the Acadian and Potsdam periods in American geology
You use primordial to describe things that belong to a very early time in the history of the world. Twenty million years ago, Idaho was populated by dense primordial forest. = primeval
It is called also Cambrian, and by many geologists is separated from the Silurian
characteristic of the earliest stage of the development of an organism of or relating to a primordium
Originally or earliest formed in the growth of an individual or organ; as, a primordial leaf; a primordial cell
The oceans of the earth at a time early in its history. The term generally implies either the time before or during the development of multi-cellular life forms (i.e., during the Precambrian), or alternatively before the development of the first land-based life forms (i.e. during the early Paleozoic)
Primordial soup - a term introduced by the Soviet biologist Alexander Oparin. In 1924, he proposed the theory of the origin of life on Earth through the transformation, during the gradual chemical evolution of molecules that contain carbon in the primordial soup