PHYTOPLANKTON AND LATE PALEOZOIC WAVE OF EXTINCTION

[1] Clarke FW, 1924, US GEOLAGCIAL SURVEY, V770, P1

[2] DAY FH, 1964, CHEMICAL ELEMENTS NA

[3] Degens E. T., 1965, GEOCHEMISTRY SEDIMEN

[4] Marshall L., 1964, ORIGIN EVOLUTION OCE, P102

[5] Mason B, 1966, PRINCIPLES GEOCHEMIS

[6] MCCAMMON H M, 1969, Journal of Paleontology, V43, P976

[7] PRIMARY PRODUCTION ISOTOPES EXTINCTIONS AND ATMOSPHERE [J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY, 1968, 4 (03) : 187 - &

[1] Clarke FW, 1924, US GEOLAGCIAL SURVEY, V770, P1

[2] DAY FH, 1964, CHEMICAL ELEMENTS NA

[3] Degens E. T., 1965, GEOCHEMISTRY SEDIMEN

[4] Marshall L., 1964, ORIGIN EVOLUTION OCE, P102

[5] Mason B, 1966, PRINCIPLES GEOCHEMIS

[6] MCCAMMON H M, 1969, Journal of Paleontology, V43, P976

[7] PRIMARY PRODUCTION ISOTOPES EXTINCTIONS AND ATMOSPHERE [J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY, 1968, 4 (03) : 187 - &