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首页> 外文期刊>Journal of vertebrate paleontology >A NEW ANISIAN (MIDDLE TRIASSIC) EOSAUROPTERYGIAN (REPTILIA, SAUROPTERYGIA) FROM PANZHOU, GUIZHOU PROVINCE, CHINA
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A NEW ANISIAN (MIDDLE TRIASSIC) EOSAUROPTERYGIAN (REPTILIA, SAUROPTERYGIA) FROM PANZHOU, GUIZHOU PROVINCE, CHINA

机译：来自番禺省省省省彭州的新奥西亚（中三叠系）eosauropterygian（爬虫蜘蛛网），中国

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摘要

Eosauropterygians rapidly diversified in the Anisian (Middle Triassic), a period by which the invertebrates had already completely recovered from the end-Permian mass extinction. The Pelsonian (Anisian) deposits of the small Panxian and Luoping intraplatform basins in southwestern China alone yielded seven or more eosauropterygian taxa. A new Middle Triassic sauropterygian, Panzhousaurus rotundirostris, gen. et sp. nov., is here described based on an almost complete skeleton from the middle Anisian (Middle Triassic) of Panzhou (Guizhou Province, southwestern China). The upper temporal fenestra smaller than the orbit, the broad and flat parietal table, the cervical ribs with two proximal articular heads, the pachyostotic proximal ends of the dorsal ribs, and the unexpanded sacral ribs indicate that the specimen is a pachypleurosaur-like eosauropterygian. The new species also shows some differences from all other eosauropterygians, such as a rounded and shortened snout, 24 cervical and 20 dorsal vertebrae, a straight ulna with a concave posterior margin, and four distal carpals. Phylogenetic analysis also reveals that Panzhousaurus is an eosauropterygian, closely related to pachypleurosaur-like forms. The discovery of Panzhousaurus enriches our knowledge of the diversity of the Panxian fauna and provides new information to test phylogenetic relationships among known eosauropterygians.
机译：eosauropterygians在anisian（中三叠层）中迅速多样化，其中无脊椎动物已经完全从最终 - 二叠纪的群众灭绝恢复过期。单独中国小攀西安和洛坪岩石盆地盆地的PELSONIAN（ANISIAN）存款产生了七个或更多的EOSAUROPTERYGIAN TACA。一个新的中间三叠系索奥洛尼亚，潘泽劳斯·罗敦斯特里斯特里斯，根。等等。 11月。，这里是基于彭州（中国西南部贵州省）中奥西亚（中际）的几乎完全骨骼。上部颞叶，小于轨道，宽阔的平坦顶台，颈部肋，具有两个近端关节头的颈椎肋，背部肋骨的心肌近端，并且未膨胀的骶肋表明样本是一种皮锥龙样eosauropterygian。新物种还展示了与所有其他eosauropterygians的一些差异，例如圆形和缩短的鼻子，24个宫颈和20个背椎，一个具有凹形后边缘的直尺子和四个远端腕骨。系统发育分析还揭示了潘欣属是eosauropterygian，与皮龟龙等形式密切相关。潘欣的发现丰富了我们对潘县动物群的多样性的了解，并提供了新信息，以测试已知的eosauropterygians中的系统发育关系。

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    Jiang Da-Yong; Lin Wen-Bin; Rieppel Olivier; Motani Ryosuke; Sun Zuo-Yu;

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    Minist Educ Lab Orogen Belt &

    Crustal Evolut Beijing 100871 Peoples R China;

    Minist Educ Lab Orogen Belt &

    Crustal Evolut Beijing 100871 Peoples R China;

    Field Museum Ctr Integrat Res Chicago IL 60605 USA;

    Univ Calif Davis Dept Earth &

    Planetary Sci Davis CA 95616 USA;

    Minist Educ Lab Orogen Belt &

    Crustal Evolut Beijing 100871 Peoples R China;

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  • 中图分类 古生物学;
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