Abstract A newly discovered track in the Chinle Group north of Moab, Utah, is attributable to the ichnogenus Atreipus, an ichnotaxon that is relatively common in eastern North America (Newark Supergroup) but very rare in the Late Triassic of the western part of the continent. This is only the second report of the genus from the Chinle Group. Atreipus has been attributed to a silesaurid dinosauriform, and dinosauriform taxa are relatively abundant by skeletal material in the Late Triassic of western North America, but track evidence in the same units is dominated by ichnotaxa attributed to dinosaurs. The rarity of Atreipus is currently an anomaly in the region.

中文翻译：

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美国西部、犹他州东部上三叠统钦勒群第二次出现恐龙形鱼属 Atreipus

摘要 犹他州摩押以北 Chinle Group 新发现的一条轨迹归属于 ichnogenus Atreipus，这是一种在北美东部（纽瓦克超群）较为常见但在大陆西部晚三叠世非常罕见的鱼类分类群。 . 这只是秦乐集团对该属的第二次报告。Atreipus 被归因于一种剑龙类恐龙，并且在北美西部晚三叠世的骨骼物质中，恐龙类分类群相对丰富，但同一单位的踪迹证据主要是属于恐龙的鱼纲。Atreipus 的稀有性目前在该地区属于异常现象。