ABSTRACT The aim of the present contribution is to describe large felipedid footprints from a new ichnological site from the Late Pleistocene of Buenos Aires Province, Argentina. The prints are referred as the new ichnospecies Felipeda miramarensis nov. ichnosp. Based on size and morphology, this new ichnotaxon may have been produced by the large machairodontine felid Smilodon populator. Track analysis indicates that the producer of the tracks had fully retractile claws, a plantigrade feet, and lacked strong supination capabilities on pes and manus. The size and depth differences between manus and pes prints indicate that the producer had notably robust anterior limbs. If correctly assigned, the new ichnospecies reinforces the idea that Smilodon was an ambush predatory mammal.

中文翻译：

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阿根廷晚更新世的大型食肉动物足迹

摘要 本论文的目的是描述阿根廷布宜诺斯艾利斯省更新世晚期一个新的考古遗址的大型 felipedid 脚印。这些指纹被称为新的鱼类物种 Felipeda Miramarensis nov。奇诺斯普。根据大小和形态，这种新的鱼鳞类群可能是由大型 machairodontine 猫科动物 Smilodon 种群产生的。履带分析表明，履带生产者的爪子完全可伸缩，足足，对pes和manus缺乏强大的旋后能力。manus 和 pes 指纹之间的大小和深度差异表明生产者的前肢非常强壮。如果正确分配，新的鱼类物种强化了剑齿虎是一种伏击掠食性哺乳动物的观点。