BIOLOGICAL EXTINCTION IN EARTH HISTORY

[1] EXTRATERRESTRIAL CAUSE FOR THE CRETACEOUS-TERTIARY EXTINCTION - EXPERIMENTAL RESULTS AND THEORETICAL INTERPRETATION [J]. SCIENCE, 1980, 208 (4448) : 1095 - 1108

[2] ALVAREZ LW, 1982, LBL14809 PUBL

[3] EVIDENCE FROM CRATER AGES FOR PERIODIC IMPACTS ON THE EARTH [J]. NATURE, 1984, 308 (5961) : 718 - 720

[4] THE END OF THE CRETACEOUS - SHARP BOUNDARY OR GRADUAL TRANSITION [J]. SCIENCE, 1984, 223 (4641) : 1183 - 1186

[5] IRIDIUM ANOMALY APPROXIMATELY SYNCHRONOUS WITH TERMINAL EOCENE EXTINCTIONS [J]. SCIENCE, 1982, 216 (4548) : 886 - 888

[6] [Anonymous], GEOLOGICAL SOC AM SP

[7] [Anonymous], MILW PUB MUS CONT BI

[8] MINERALOGIC EVIDENCE FOR AN IMPACT EVENT AT THE CRETACEOUS-TERTIARY BOUNDARY [J]. SCIENCE, 1984, 224 (4651) : 867 - 869

[9] BROCHWICZLEWINS.W, 1985, INT GEOL CORRELATION, V199

[10] EXTINCTION OF SPECIES BY PERIODIC COMET SHOWERS [J]. NATURE, 1984, 308 (5961) : 715 - 717

[1] EXTRATERRESTRIAL CAUSE FOR THE CRETACEOUS-TERTIARY EXTINCTION - EXPERIMENTAL RESULTS AND THEORETICAL INTERPRETATION [J]. SCIENCE, 1980, 208 (4448) : 1095 - 1108

[2] ALVAREZ LW, 1982, LBL14809 PUBL

[3] EVIDENCE FROM CRATER AGES FOR PERIODIC IMPACTS ON THE EARTH [J]. NATURE, 1984, 308 (5961) : 718 - 720

[4] THE END OF THE CRETACEOUS - SHARP BOUNDARY OR GRADUAL TRANSITION [J]. SCIENCE, 1984, 223 (4641) : 1183 - 1186

[5] IRIDIUM ANOMALY APPROXIMATELY SYNCHRONOUS WITH TERMINAL EOCENE EXTINCTIONS [J]. SCIENCE, 1982, 216 (4548) : 886 - 888

[6] [Anonymous], GEOLOGICAL SOC AM SP

[7] [Anonymous], MILW PUB MUS CONT BI

[8] MINERALOGIC EVIDENCE FOR AN IMPACT EVENT AT THE CRETACEOUS-TERTIARY BOUNDARY [J]. SCIENCE, 1984, 224 (4651) : 867 - 869

[9] BROCHWICZLEWINS.W, 1985, INT GEOL CORRELATION, V199

[10] EXTINCTION OF SPECIES BY PERIODIC COMET SHOWERS [J]. NATURE, 1984, 308 (5961) : 715 - 717