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Fortune Head Ecological Reserve.ArchiviertvomOriginal(nicht mehr online verfügbar)am18.Mai 2006;abgerufen am 2.November 2016. Parks & Natural Areas Division, Department of Environment and Conservation, Government of Newfoundland and Labrador
Joachim E. Amthor, John P. Grotzinger, Stefan Schröder, Samuel A. Bowring, Jahandar Ramezani, Mark W. Martin, Albert Matter: Extinction of Cloudina and Namacalathus at the Precambrian-Cambrian boundary in Oman. Geology. Band31, Nr.5, 2003, S.431–434, doi:10.1130/0091-7613(2003)031<0431:EOCANA>2.0.CO;2 (alternativer Volltextzugriff: ResearchGate)
Fortune Head Ecological Reserve.ArchiviertvomOriginal(nicht mehr online verfügbar)am18.Mai 2006;abgerufen am 2.November 2016. Parks & Natural Areas Division, Department of Environment and Conservation, Government of Newfoundland and Labrador