Answer: fossils

AnswerCrossword Clue
FOSSILSWhat paleontologists study.
fossilsThe remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock
fossilsFOSSIL, the preserved remains of a plant or animal
fossilsA word or phrase that has become obsolete except in set phrases or forms, e.g., hue in hue and cry
fossilsderogatory. An antiquated or stubbornly unchanging person or thing
FOSSILSNatural history museum sights
FOSSILSFogies
FOSSILSArcheologists' finds
FOSSILSMuseum displays
FOSSILSOld-fashioned persons.
FOSSILSOld-fashioned folk
FOSSILSThings of the past
FOSSILSArchaeologist's finds
FOSSILSThey're decidedly out
FOSSILSOutdated ideas
FOSSILSPieces of the past
FOSSILSDig discoveries
FOSSILSFuddy-duddies
FOSSILSTraces of the past