Science. 1965 Apr 30;148(3670):634-7. doi: 10.1126/science.148.3670.634.
Leaf impressions from the Polarstar Formation in the northern Ellsworth Mountains are the first Glossopteris and the oldest identifiable plant fossils reported from West Antarctica. Their occurrence in a thick, probably marine, geosynclinal sequence in close association with coals and probable glacial deposits increases the similarity between the late Paleozoic history of Antarctica and the other southern continents.
来自北埃尔斯沃思山脉极星组的叶印痕是在南极洲西部报道的最早的舌羊齿植物化石，也是最古老的可识别植物化石。它们出现在一个可能是海洋的厚大地槽序列中，与煤和可能的冰川沉积物密切相关，这增加了南极洲与其他南部大陆晚古生代历史之间的相似性。
