If life existed on Mars during this time period, researchers believe that the fossil remnants of that past life may be sandwiched within the sedimentary rock layers, just as they are on Earth.
(life; existed; L:on Mars; T:during this time period) (researchers; believe; that the fossil remnants of that past life may be sandwiched within the sedimentary rock layers) Context(researchers believe,List([49, 68))):(the fossil remnants of that past life; may be sandwiched; within the sedimentary rock layers)
researchers believe,List([49, 68))
life researchers the fossil remnants of that past life
existed believe may be sandwiched
L:on Mars T:during this time period
that the fossil remnants of that past life may be sandwiched within the sedimentary rock layers
within the sedimentary rock layers