	Authors	Year	Title
	Saunders, Greenfest-Allan & Work	2008	Morphologic and taxonomic history of Paleozoic ammonoids in time and morphospace.[ W.B.Saunders, E.Greenfest-Allen, D.M.Work & S.V.Nikolaeva]. Paleobiology, 34 (1), 2008:128-154.