新疆晚三叠世哈萨克虫化石新材料

NEW MATERIALS OF LATE TRIASSIC KAZACHARTHRA FROM XINJIANG

记述的哈萨克虫首次发现于吐鲁番盆地大河沿西北１５ｋｍ处的艾丁湖煤矿，其中包括一新种，与其共生的有延长植物群，时代为晚三叠世，层位与黄山街组相当。由于在所含哈萨克虫的该组中多处发现油气显示及沥青脉，可做为今后找油气及地层划分与对比的标志层。

First discovered in the Aiding Lake Coal Mine,about 15 km northwest of Daheyan,during a petroleum geological survey in a period from 1988 to 1989,the Kazacharthra illustrsted in this paper,symbiotic with the Yanchang Flora,are of Late Triassic,and its corresponding strata equal to the Huangshanjie Formation. With well--preserved and completed carapace bearing striking venous ornament and distinct mandibular groove ridge and dorsal organ, some even preserved with thoracic appendages,somites and telsons, Almatium and other fossils, overlapping one and other,richly occur parallel to the bedding plane.The finding of this fauna provides new fossil materials not only for making subdivision and correlation of this set of oil-producing formation in Turpan-Hami Basin and its marginal areas,but also for expounding the evolution of Crustacea.