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physical sciencesfossils
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1 Dossier(s) trouvé(s) pour le chercheur principal "Lenz, Alfred" (les projets pluriannuels sont regroupés):
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Silurian graptolites of the Arctic Islands
chercheur principal:
Année(s) de permis: 1994 1993 1992 1991 1990 1989 1988
Résumé: As part of a long-term study, the researcher will continue to collect fossil specimens of graptolites in rocks collected from northern Cornwallis Island and central Ellesmere Island. The researcher is investigating why some species became extinct over 415 million years ago while other species went through rapid changes....
Année(s) de permis: 1994 1993 1992 1991 1990 1989 1988
Résumé: As part of a long-term study, the researcher will continue to collect fossil specimens of graptolites in rocks collected from northern Cornwallis Island and central Ellesmere Island. The researcher is investigating why some species became extinct over 415 million years ago while other species went through rapid changes....
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