Petrified wood is a common fossil in the Sonoran Desert, and sometimes its presence in the sedimentary rocks tells us that the ancient environment, a paleo-environment, was terrestrial.
(Petrified wood; is; a common fossil in the Sonoran Desert) (its presence in the sedimentary rocks; tells; us; that the ancient environment, a paleo-environment, was terrestrial; T:sometimes) Context(its presence in the sedimentary rocks tells,List([71, 114))):(the ancient environment; was; terrestrial)
its presence in the sedimentary rocks tells,List([71, 114))
Petrified wood its presence in the sedimentary rocks the ancient environment
is tells was
a common fossil in the Sonoran Desert
us that the ancient environment, a paleo-environment, was terrestrial T:sometimes
terrestrial