| 腹菊石超科（Gastriocerataceae）一新科 |
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| 引用本文： | 马俊文,李富玉.腹菊石超科（Gastriocerataceae）一新科[J].江西地质,1998,12(2):81-90. |
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| 作者姓名： | 马俊文 李富玉 |
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| 作者单位： | 江西煤田地质局科研所(马俊文)，江西煤田地质局２２３队(李富玉) |
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| 摘 要： | 江西铅山地区早二叠世晚期上饶组煤系的底部，发现独具特色的菊石新类群，其壳面的瘤饰特别发育，缝合线腹叶窄长，腹支叶呈披针形，明显区别于腹菊石超科中的其它各科，据此，建立了瘤腹菊石科（新科）（Ｎｏｄｏｇａｓｔｒｉｏｃｅｒａｔｉｄａｅｆａｍ．ｎｏｖ．），并对新科中诸属，在茅口期的系统演化进行了初步探讨。
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| 关 键 词： | 瘤腹菊石科（新科） 上饶组 铅山 江西 |
A NEW FAMILY OF GASTRIOCERATACEAE |
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| Abstract: | A rare typical new group of ammonite was discovered at the bottom of coal measures in the Shangrao Formation of late Early Permian age in Yanshan area, Jiangxi. Knot decorations are well_ developed on the shell surface, the suture siphonal lobe is long and narrow, while the sub _ lobe is lanceolate in shape, which are distinctively different from other families of the Gastriocerataceae. Therefore, the new family is named as Nodogastrioceratidae fam. nov. and a preliminary discussion has been made on the systematic evolution of the various genera of the new family in the Maokou Period. |
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