Paleobiology of Cretaceous and Tertiary Decapod Crustaceans from Seymour Island, Antarctica

1986-1987年野外季节期间在南极洲西摩岛收集的大量十足甲壳类化石，使对整个南部高纬度地区这一类群的古生物学研究得以继续和扩展。这些标本扩展了晚白垩世-古新世十足类动物的分布范围，为检验白垩纪末期灭绝事件对高纬度地区十足类动物的影响程度提供了可能。由于一些新的或最近描述的分类群是现代深水形式的祖先，因此也有可能确定这些生物是否具有类似的繁殖策略，这些策略可能同样适用于适应深水和高纬度浅水栖息地。此外，关于西摩岛十足类分布的扩展信息可以与新西兰包含类似动物群的详细收集数据相结合，以进一步扩大我们对南半球形式的生物地理分布的认识。

Extensive collections of fossil decapod crustaceans, which were made on Seymour Island, Antarctica, during the 1986-1987 field season, permit continuation and extension of research on the paleobiology of this group throughout the southern high latitude region. These specimens extend the distribution of decapods in Late Cretaceous-Paleocene, making it possible to test the extent to which the terminal Cretaceous extinction event effected decapod faunas in high latitude regions. Because several new, or recently described taxa are ancestral to modern deep-water forms, it is also possible to determine whether the organisms possess similar reproductive strategies which may have served equally well as an adaptation to deep-water and high latitude shallow-water habitats. Further, the extended information regarding the distribution of decapods from Seymour Island can be coupled with data derived from detailed collecting of sites in New Zealand, containing comparable faunas, to further expand our knowledge of the biogeographic distribution of Southern Hemisphere forms.