@article {5906,
	title = {Phanerozoic development of tiering in soft substrata suspension-feeding communities},
	journal = {Paleobiology},
	volume = {12},
	year = {1986},
	note = {PDF},
	pages = {400-420},
	keywords = {communities, ecology, paleoecology, phanerozoic},
	author = {Bottjer, David J. and Ausich, W. I.}
}
