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| 滇中川街盆地中侏罗世弓鲛（软骨鱼类）化石新材料 |
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孙柏东1,2, 王伟1, 刘军平1, 宋冬虎1, 吕勃烨1, 徐云飞2, 王璐1
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1.云南省地质调查院, 云南 昆明 650216;2.昆明理工大学, 云南 昆明 650093
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| 摘要: |
| 云南禄丰县川街盆地中侏罗统产出弓鲛鱼类化石后甸弓鲛（Hybodus houtienensis Young）、新庄弓鲛（新种）（Hybodus xinzhuangensis Sun）、川街弓鲛（新种）（Hybodus chuanjieensis Sun）。后甸弓鲛（Hybodus houtienensis Young）是中国发现最早的弓鲛鱼类之一，正型标本为破碎的鳍棘，副型标本为一枚牙齿齿冠。依据在川街盆地相同层位发现的新化石材料，对后甸弓鲛副型标本进行了增补，补充了描述，建立了2个弓鲛新种：新庄弓鲛与川街弓鲛，丰富了"后甸弓鲛带"弓鲛类群，并讨论了弓鲛属的生物地层、生活的古环境和地理分布特征。 |
| 关键词: 后甸弓鲛 新庄弓鲛 川街弓鲛 川街盆地 滇中 |
| DOI： |
| 分类号:P534.52;Q915.2 |
| 基金项目:中国地质调查局项目《云南1∶5万二街、易门、鸣矣河、上浦贝幅区域地质调查》（编号：DD20160017）、《云南区域地质调查片区总结与服务产品开发》（编号：DD20160345-02）和云南省科技领军人才培养计划项目《西南“三江”叠合成矿作用与成矿预测》（编号：2013HA001） |
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| New fossil materials of hybodus (Chondrichthyes) in the Middle Jurassic found in Chuanjie Basin of central Yunnan Province |
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SUN Baidong1,2, WANG Wei1, LIU Junping1, SONG Donghu1, LÜ Boye1, XU Yunfei2, WANG Lu1
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1.Yunnan Institute of Geological Survey, Kunming 650216, Yunnan, China;2.Kunming University of Science and Technology, Kunming 650093, Yunnan, China
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| Abstract: |
| Chuanjie basin in Lufeng County of Yunnan Province produced hybodontoidea's fossils in Middle Jurassic strata, which include Hybodus houtienensis, Hybodus xinzhuangensis (New species), and Hybodus chuanjieensis (New species). Hybodus houtienensis is one of the earliest hybodontoidea found in China, the holotype consists of broken spines, and subtype specimen is a tooth crown. On the basis of the new fossil material found in the same strata of Chuanjie Basin, we have added Subtype specimens of the Hybodus houtienensis, also added the description about it; the authors set up two new hybodus species:Hybodus xinzhuangensis and Hybodus chuanjieensis, thus enriching the group of "houtienensis hybodus belt". The biostratigraphy of Hybodont,ancient environment of biostratigraphy and geographical distribution were also discussed. |
| Key words: Hybodus houtienensis Hybodus xinzhuangensis Hybodus chuanjieensis Chuanjie Basin central Yunnan Province |