title: Paleoecology. Fossils help figure out food webs old and new.
authors.forename: Elizabeth
authors.initials: E
authors.lastname: Pennisi
mesh_terms: D000818:Animals; D005075:Biological Evolution; D002170:Canada; D002681:China; D017753:Ecosystem; D020387:Food Chain; D005580:Fossils; D010944:Plants