CAJ | 학술논문

文内描述了在新疆塔里木盆地覆盖区QB-1井(黑土凹组)和TZ-32井(却尔却克组)中发现的3种奥陶纪冷水型胞石,即Tanuchitina sp.cf.achabae Paris,Linochitina pissotensis Paris和Siphonochitina bella sp.nov.,时代为中到晚奥陶世.冷水型胞石在奥陶纪主要分布于冈瓦纳大陆北缘和英国等中高纬度地区,沿冈瓦纳大陆边缘向北的洋流将这些中高纬度的表层冷水型胞石带入低纬度的塔里木板块内,热带下沉作用能使它们在深水的盆地相中获得适宜的环境温度而得以生存.
문내묘술료재신강탑리목분지복개구QB-1정(흑토요조)화TZ-32정(각이각극조)중발현적3충오도기랭수형포석,즉Tanuchitina sp.cf.achabae Paris,Linochitina pissotensis Paris화Siphonochitina bella sp.nov.,시대위중도만오도세.랭수형포석재오도기주요분포우강와납대륙북연화영국등중고위도지구,연강와납대륙변연향북적양류장저사중고위도적표층랭수형포석대입저위도적탑리목판괴내,열대하침작용능사타문재심수적분지상중획득괄의적배경온도이득이생존.
Ordovician cold-water chitinozoan species, viz. Tanuchitina sp. cf. achabae Paris, Linochitina pissotensisParis and Siphonochitina bella sp. nov., are discovered from the TZ-32 Well (the Charchaq Formation) and QB-1 Well (theHeituao Formation) in the Tarim Basin, Xinjiang, China. Species of Linochitina and Siphonochitina were mainly found fromhigh latitude areas. The findings of these species in the Tarim Basin confirms that these cold-water origin genera can beobtained outside the Gondwanaland margin. The age of those fossils is Middle to Late Ordovician. Three species are describedand illustrated in the present paper.