吉林安图县早白垩世屯田营组孢粉组合  

AN EARLIEST CRETACEOUS PALYNOLOGICAL ASSEMBLAGE FROM THE TUNTIANYIN FORMATION IN ANTU, JILIN PROVINCE

作　　者：黎文本[1] 

机构地区：[1]中国科学院南京地质古生物研究所,南京210008

出　　处：《古生物学报》2001年第4期450-456,共7页Acta Palaeontologica Sinica

基　　金：国家自然科学基金项目 1999年

摘　　要：吉林省安图县明月镇屯田营组上部的孢粉化石组合以含大量松柏类各种两气囊花粉 ,伴以少量Schizaeoisporites,Fixisporites,Cicatricosisporites等属孢子为特征 ,组合面貌与辽西义县组下部尖山沟层的组合一致 ,时代属早白垩世贝利亚斯期 ,整个屯田营组只相当于义县组的下部 。The Palynological assemblage from Mingyue Town, Antu County, eastern Jilin Province is composed of 31 species assigned to 21 genera of pteridophyte spores and gymnospermous pollen and lacks angiospermous pollen. The spores include: Leiotriletes spp., Dictyophyllidites sp., Converrucosisporites sp., Neoraistrickia truncata (Cookson) Potonié, N. sp., Baculatisporites comaumensis (Cookson) Potonié, Fixisporites tortus Chlonova, Cicatricosisporites australiensis (Cookson) Potonié, C. ludbrookae, C. sp., Schizaeoisporites laevigataeformis (Bolchovitina) Gao et Zhao, Lycopodiumsporites austroclavatidites (Cookson) Potonié and the pollen Classopollis annulatus (Verbitskaya) Li, Chasmatosporites hiatus Nilsson, Cerebropollenites mesozoicus (Couper) Nillson, Jiaohepollis verus Li, Protopinus sp., Quadraeculina limbata Maljawkina, Caytonipollenites pallidus (Reissinger) Couper, Pinuspollenites minutus (Zaklinskaya) Song et Zheng, P. enodatus (Bolchovitina) Li, P. spp., Abiespollenites diversus (Bolchovitina) Li, Pseudopicea variabiliformios (Maljawkina) Bolchovitina, Piceaepollenites multigrumus (Chlonova) Hua, P. omoriciformis (Bolchovitina) Xu et Zhang, Cedripites sp., Podocarpidites multesimus (Bolchovitina) Pocock, P. unicus (Bolchovitina) Pocock, P. sp. The coniferous pollen, especially the bisaccates, occupy about 95% in content of the assemblage; the spores stand only in small number. The present assemblage is comparable with that from the lower Yixian Formation of western Liaoning Province (Yu Jing xian, 1989, Li Wen ben and Liu Zhao sheng, 1999) in general aspect and the rare appearance of spores Cicatricocisporites, Schzaeoisporites and Fixisporites , indicating a Berriasian age.

关 键 词：孢粉组合 屯田营组 吉林省安图县 早白垩世早期 

分 类 号：Q913[天文地球—古生物学与地层学]