Latirhinus uitstlani, a ‘broad-nosed’ saurolophine hadrosaurid (Dinosauria, Ornithopoda) from the late Campanian (Cretaceous) of northern Mexico
Latirhinus uitstlani, a ‘broad-nosed’ saurolophine hadrosaurid (Dinosauria, Ornithopoda) from the late Campanian (Cretaceous) of northern Mexico
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Latirhinus uitstlani，一种来自墨西哥北部坎帕尼亚（白垩纪）晚期的“宽鼻子”蜥龙鸭嘴龙科（恐龙亚目，鸟脚亚目）
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
Claudia Inés Serrano Brañas
中科院分区：
文献类型：
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作者：
A. Prieto;Claudia Inés Serrano Brañas
我们描述了鸭嘴龙科恐龙的一个新属和新种，Latirhinus uitstlani，来自墨西哥北部普韦布洛山地层的上坎帕尼亚地层。这个新分类群与除狮龙外的其他鸭嘴龙科动物不同，其鼻背突深而弓形。它与格里波龙以及所有其他蜥龙科的不同之处在于，它具有更宽的鼻孔和肩胛骨的前背弯曲三角肌嵴（与鸭嘴龙科中的兰贝龙亚科会聚）。 L. uitstlani 似乎与“克里特龙”有亲缘关系，尤其是格里波龙的物种，它代表了北美最南端的蜥龙类动物之一。同样，L. uitstlani 增加了西部内陆盆地南部蜥龙类的多样性，其在墨西哥北部的出现与坎帕尼亚时代晚期拉拉米迪亚南部“克里特龙”的明显优势相一致。
We describe a new genus and species of hadrosaurid dinosaur, Latirhinus uitstlani, from upper Campanian strata of the Cerro del Pueblo Formation in northern Mexico. The new taxon differs from other hadrosaurids, except Gryposaurus, in possessing a deep and arcuate dorsal process of the nasal; it differs from Gryposaurus, as well as from all other saurolophines, in having a broader narial foramen, and an anterodorsally curved deltoid crest of the scapula (convergent with Lambeosaurinae within the context of Hadrosauridae). L. uitstlani appears to be allied to ‘kritosaurs’, particularly to species of Gryposaurus, and it represents one of the southernmost saurolophines of North America. Likewise, L. uitstlani adds to the diversity of saurolophines in the southern Western Interior Basin and its occurrence in northern Mexico is consistent with the apparent predominance of ‘kritosaurs’ in southern Laramidia during late Campanian times.