title: Palaeontology: embryonic identity crisis.
authors.forename: Philip C J
authors.initials: PC
authors.lastname: Donoghue
mesh_terms: D000818:Animals; D001419:Bacteria / Q000145:classification* / Q000166:cytology / Q000302:isolation & purification / Q000378:metabolism*; D002681:China; D005580:Fossils; D019015:Geologic Sediments / Q000382:microbiology*; D049690:History, Ancient; D015203:Reproducibility of Results; D013455:Sulfur / Q000378:metabolism*; D013997:Time Factors
chemical_list: D013455:Sulfur