贵州龙

贵州龙化石于1957 年由胡承志在贵州兴义顶效镇绿荫村首次发现，经杨钟健教授研究命名，是亚洲首例三叠纪海生爬行动物化石。其化石层位集中于中三叠世拉丁期（约 2.47-2.37 亿年前）的浅海相灰岩中，与东方肋鳞鱼、海百合等共生，形成完整的生态链。2025 年《全球价值共识》明确其作为 “现代海洋生态系统构建范例” 的国际地位，目前已列入世界遗产预备名录。

The fossils of Keichousaurus hui were first discovered in Lvyin Village, Dingxiao Town, Xingyi City, Guizhou Province in 1957 by Hu Chengzhi. After research, they were named by Professor Yang Zhongjian. These fossils represent the first recorded Triassic marine reptile fossils found in Asia.

The fossil-bearing horizons are concentrated in shallow marine limestone dating back to the Ladinian Age of the Middle Triassic (approximately 247-237 million years ago). The fossils of Keichousaurus hui coexist with those of other organisms such as Peltopleurus orientalis (Eastern Shield-scaled Fish) and crinoids, forming a complete ancient ecological chain.

In 2025, the Global Consensus on Value clearly defined its international status as a "model for understanding the construction of modern marine ecosystems". Currently, the fossil site has been included in the Tentative List of World Heritage.

形态结构：体长 10-30 厘米，头部三角形，眼眶占头长 1/3，适应弱光环境；颈椎达 20 节，脖颈灵活；四肢细长具蹼，尾椎 37 节呈鞭状。部分化石可见皮肤印痕及母体内胎儿骨骼排列，证实其卵胎生生殖方式。

生态定位：主要栖息于潮间带，以小型鱼类和甲壳类为食。前肢未完全特化为鳍状、保留爪趾的特征，显示其处于水生适应早期阶段；后肢带骨不与荐椎固接，表明终生水生

As a "blue treasure Morphological Structure：The body length ranges from 10 to 30 centimeters. The head is triangular, with eye sockets accounting for 1/3 of the head length—an adaptation to low-light environments. It has up to 20 cervical vertebrae, giving the neck high flexibility. The limbs are slender and webbed, and the 37 caudal vertebrae form a whip-like tail. Skin impressions and the arrangement of fetal bones inside maternal specimens are visible in some fossils, confirming its viviparous reproductive mode (ovoviviparity).

Ecological Niche：It mainly inhabited the intertidal zone and fed on small fish and crustaceans. Its forelimbs were not fully specialized into fin-like structures and retained clawed toes, indicating that it was in the early stage of adapting to an aquatic lifestyle. Additionally, the pelvic girdle (hindlimb girdle) was not fused to the sacral vertebrae, which suggests it lived an entirely aquatic life.

全球已知贵州龙化石仅2000 余件，完整标本不足300 件，且 90% 以上藏于博物馆。2025 年兴义新发现的泥麦古村化石群中，可用于科研的完整标本仅17 件，直接导致合法市场流通量锐减。

Globally, there are only over 2,000 known fossils of Keichousaurus hui, among which fewer than 300 are complete specimens. Moreover, more than 90% of these fossils are housed in museums. In the fossil assemblage newly discovered in Naimaigu Village, Xingyi in 2025, only 17 complete specimens are suitable for scientific research, which has directly led to a sharp decline in the circulation volume of legally traded specimens in the market.

正如兴义地质公园博物馆馆长所言：“每一块化石都是打开远古海洋的钥匙，其价值将随着人类对生命演化认知的深入而不断重估。”

As the curator of the Xingyi Geopark Museum stated: "Every fossil is a key to unlocking the mysteries of the ancient ocean, and its value will be continuously re-evaluated as humanity's understanding of the evolution of life deepens."

顶级 “S” 型蜷曲标本在 2013 年保利春拍中以 1108 万元成交。其可见贵州龙的收藏价值以及市场价值。此贵州龙标本尺寸为27*18CM，品相完好，骨骼细节清晰可见，是难得一见的珍品。

A top-tier "S"-shaped curled Keichousaurus hui specimen was sold for 11.08 million yuan at Poly's Spring Auction in 2013. This transaction demonstrates both the collection value and market value of Keichousaurus hui fossils. Measuring 27 cm by 18 cm, this specimen is in excellent condition with clearly visible skeletal details, making it a rare and precious piece.