| 摘要：产于泰国半岛班关坤村附近的叶肢介化石原鉴定为 Pseudograpta cf。yuzhongensis Chen，P。jialingensisDuan，泰语论文，P。siamensis Duan，P。sp。，Paleoleptestheria chinensis Chen和 Palaeolmnadia？sp。等 5个属种或未定种 ，认为其时代为中侏罗世晚期。现经重新探讨 ，发现这些叶肢介化石生长带上的网孔状装饰网壁相对较粗 ，网孔较深 ，孔径比 Euestheria ziliujingensis叶肢介群的分子要稍大一些 ，但远比 Pseudograpta或 N estoria叶肢介群的要小 ，基本上可以归入 Paleoleptestheria？chinensis叶肢介群 ，其生物地理区系属于古地中海水系 ，与中国西南湖群中侏罗世晚期的叶肢介动物群关系最为密切 ，泰语论文范文，其生存时代与北方地理区系的 Pseudograpta叶肢介动物群大致平行 Abstract：Produced in the Thailand Peninsula off class conchostracon of Kuncun near Pseudograpta for identification, cf. Chen P, yuzhongensis. JialingensisDuan, P. Duan P, siamensis. Sp. Chinensis Chen Paleoleptestheria and Palaeolmnadia? Sp. 5 species or not, that the era of late middle jurassic. Now the re study and found that these conchostracans growth belt mesh net decorative wall is relatively thick, deep mesh, aperture than molecules conchostracans group Euestheria ziliujingensis to slightly larger, but far Pseudograpta or n Estoria conchostracans group of the smaller than, the can be classed as Paleoleptestheria? Chinensis conchostracans group and its biogeographic belonging to the ancient Mediterranean water system, is closely related to Lake in Southwest China group in late Middle Jurassic conchostracans animal group relation, the survival of the era and the north of the geographical flora of Pseudograpta conchostracans animal groups roughly parallel 引言：泰国半岛董里附近的陆相中生代地层由三部分组成 :上部是红层 ,主要为粉砂岩和砂岩 ,产早白垩世植物化石 ;中部是红色砂质岩 ;下部以泥质灰岩和含叶肢介化石的暗色页岩为主 ( Chonglakmani etal.,1 990 ;Asama etal.,1 981 )。本文所探讨的叶肢介化石产于董里和甲米之间的班 |
