台灣白堊紀之化石孢粉（2）──分類處理

Cretaceous Palynomorphs of Taiwan (2)–Taxonomic Treatment

本文於台灣陸海域十七口地下探井，白堊紀早期地層中，共發現孢粉化石五十四形態屬一百二十形態種，其中蕨類孢子計有四十五形態屬九十五形態種，裸子植物花粉計有七形態屬十九形態種；被子植物花粉計有二形態屬六形態種；藻類孢子計有一形態屬一形態種。由早期白堊紀之孢粉化石群聚，顯示裸子植物花粉為其中顯著的一個組成分子；蕨類孢子種類趨異性極大亦為其中顯著的植物群；而被子植物花粉僅有單溝及三溝的原始型花粉。

Fifty eight form genera, one hundred and thirty four form species of fossil sporomorphs were reported from the early Cretaceous formations based on materials from seventeen exploration wells in Taiwan. Among these reported, there are fourty-five form genera and ninty eight form species of pteridophytic spores, eleven form genera and twenty six form species of gymnospermous grains, and two form genera ten form species of angiospermous grains and one form genus and one form species of algal spores. These early Cretaceous sporomorphic assemblages are predominated by gymnospermous forms in species quantity but by pteridophytic forms in species diversity. Angiospermous species are only represented by primitive monocolpate and tricolpate pollen grains.