Table T6. Relative abundance of Late Cretaceous plant microfossil taxa, 276.60-362.03 mbsf.
Fossil taxon
Depth (mbsf)
276.60
288.26
296.06
297.01
304.95
314.45
314.96
343.00
362.03
Nonmarine algae                  
Botryococcus - - - - 2% - - - -
Marine dinoflagellates                  
Cribroperidinium sp. - - - - + - - - -
Heterosphaeridium heterocanthum - - + + + + + + -
Isabelidinium variabile - - - - + + + - -
Spiniferites spp. - - -   +        
Wuroia corrugata - - - - - + - - -
Trochospiral liners - - - + + + - - -
Undifferentiated microplankton - - - - 2% - + - -
Total dinocysts - - + + 5% + 1% + -
Fungi                  
Spores + hyphae 1% 9% 4% 4% + 4% 1% + -
Cryptogams                  
Aequitriradites spp. - - - - - - - + -
Appendicisporites sp. - - - + - - - - -
Baculatisporites spp. 4% + 1% + + 1% 2% - -
Biretisporites spp. + + + + + + + + -
Camarozonosporites australiensis + - - + - - - - -
Ceratosporites equalis + - + + + - + - -
Cicatricosisporites australiensis + + + + 2% + + - -
Cicatricosisporites ludbrookiae + - - - - - - - -
Coptospora sp. A + - + + - - + - -
Cyathidites spp. 4% 15% 2% 2% 4% 2% 2% 2% -
Dictyophyllidites spp. - - - - + + - - -
Foraminisporis asymmetricus - - - + - - - - -
Gleicheniidites sp. A + + - + - + + + -
Gleicheniidites spp. + - - - + + 1% 8% -
Kraeuselisporites spp. + - + - - - - - -
Laevigatosporites ovatus/major 2% + 4% 1% + + + - -
Laevigatosporites sp. A - - - - - + - - -
Leptolepidites spp. - - + - - - - - -
Nevesisporites dailyii + + + - - - - - -
Osmundacidites + - + - - + - - -
Retitriletes australoclavatidites 2% - + - + - + 2% -
Retitriletes eminulus + - - - - - - - -
Retitriletes nodosus - - - + - - - - -
Stereisporites antiquisporites + - - - + - 1% + -
Stereisporites sp. A - - - - - - + - -
Triporoletes reticulatus + - - - - - - - -
Verrucatosporites sp. A + - - - - - - + -
Undifferentiated trilete spores + - 3% 4% - + 1% 4% -
Total cryptogams 16% 20% 8% 7% 6% 6% 10% 16% -
Gymnosperms                  
Alisporites grandis - - + - - + + - -
Araucariacites australis 20% 7% 28% 19% 11% 33% 24% 16% -
Balmeiopsis limbata - - + - - + + - -
Cupressacites 1% 1% 3% 1% 4% 5% 2% 6% -
Dilwynites granulatus 4% - 3% 4% 2% 4% 4% 6% -
Dilwynites sp. A (microgranulate) 4% 1% 2% 2% - 7% 1% - -
Dilwynites sp. B (microechinate) - - - + - - - - -
Exesipollenites tumulus - + - - - - + - -
Lygistepollenites florinii - - - - ? - - - -
Microcachrydites antarcticus 5% 12% 2% 1% 2% 2% 4% 8% -
Phyllocladidites mawsonii 1% 3% 1% + 5% 1% 1% + -
Phyllocladidites reticulosaccatus + - + - 4% - + - -
Podocarpidites spp. 35% 39% 45% 42% 55% 33% 50% 46% +
Trichotomosulcites subgranulosus complex 12% 14% 4% 25% 6% 5% 1% 2% +
Trisaccites spp. - - - + - 1% - - -
Vitreisporites spp. - - - - - - + - -
Undifferentiated gymnosperms + + 1% - - - + 4% -
Total gymnosperms 82% -80% 90% 92% 92% 91% 88% 88% +
Angiosperms                  
Australopollis obscurus 1% 1% + + 2% + + - -
Erdtmanipollis sp. + -              
Rhoipites/Tricolporites spp. - - + - + + - - -
Tricolpites spp. - - + - - - - - -
Total angiosperms 2% 1% 2% + 2% + + - -
Reworked permo-Triassic + + - - 1% + + - -
Modern contaminants - + - + - - - 35% +
Pollen sum (excluding reworked spp.) 245 60 188 133 167 282 276 52 NA

Note: + = value < 1%, - = fossil taxon not recorded. NA = not applicable.