American Heritage Dictionary
(3)
Century Dictionary
(8)
GNU Webster's 1913
(3)
WordNet
(2)
Elsewhere on the web
(100 MYA), but after the marsupial-placental split (150 MYA).— PLoS ONE Alerts: New Articles
Triangles and rectangles represent gene clusters and lost genes, respectively; dashed and dotted lines represent the marsupial-placental and intra-Boreoeutheria divergences, respectively.— PLoS ONE Alerts: New Articles
Bearded dragons, scrub pythons, box jellyfish and everyone's favorite marsupial, the red kangaroo, dominated the Outback-themed presentation.— News for InsideNova.com

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