A middle Famennian shallow-water vertebrate assemblage is described from the shallow-water shelf deposits exposed in the western Mongolia Hushoot Shiveetiin gol section from the Baruunhuurai Terrane of the Central Asian Orogenic Belt (CAOB). The low diversity, yet abundant chondrichthyan fauna represents a typical shallow-water shark biofacies but lacks the expected protacrodont and phoebodont species, instead comprising almost exclusively of ctenacanthiform shark teeth and a new genus and species Junggarensis ambiguus gen. et sp. nov. This new species appears highly derived, likely occupying the shallow-water niche protacrodont and orodont sharks typically inhabit. The identification of tooth variation in Junggarensis ambiguus gen. et sp. nov. has allowed for the synonymy of previous indeterminate Famennian shark teeth and in turn confirms vertebrate faunal connections between the Central Asian Orogenic Belt and areas along the northern margins of Gondwana.

从中亚造山带 (CAOB) 的 Baruunhuurai 地块的蒙古西部 Hushoot Shiveetiin gol 剖面中暴露的浅水陆架沉积物中描述了一个中法门阶浅水脊椎动物组合。低多样性但丰富的软骨鱼类动物群代表了典型的浅水鲨鱼生物相，但缺乏预期的原角鲨和 phoebodont 物种，而是几乎完全由 ctenacanthiform 鲨鱼牙齿和一个新属和种Junggarensis ambiguus gen 组成。等 sp. 十一月 这个新物种似乎是高度衍生的，可能占据了通常栖息的浅水生态位原角鲨和齿鲨。准噶尔歧义齿变异的鉴定将军 等 sp. 十一月 允许以前不确定的法门鲨鱼牙齿的同义词，反过来证实了中亚造山带与冈瓦纳大陆北缘地区之间的脊椎动物群系联系。