Abstract The validity of the monotypic ichnogenus Thatchtelithichnus has been called into question due to an inference that it is a bioclaustration. Close analysis of the Thatchtelithichnus holmani holotype reveals that no part of this ichnotaxon involves a bioclaustration, and thus it remains a valid ichnotaxon. Thatchtelithichnus holmani has been observed on the bottom shell (plastron) of cryptodiran and pleurodiran turtles in North America and Egypt where it is interpreted to represent an attachment trace of aquatic ectoparasites. It has also been observed on dinosaur long bones where it may represent the activity of beetle larvae.

中文翻译：

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Ichnologic 注释：为 Thatchtelithichnus Zonneveld、Bartels、Gunnell 和 McHugh 辩护，2015 年

摘要 单型 ichnogenus Thatchtelithichnus 的有效性受到质疑，因为推断它是一种生物隔离。对 Thatchtelithichnus holmani 正模模型的仔细分析表明，该 ichnotaxon 的任何部分都没有涉及生物分裂，因此它仍然是一个有效的 ichnotaxon。Thatchtelithichnus holmani 已在北美和埃及的隐翅目龟和胸膜龟的底壳（腹甲）上观察到，在那里它被解释为代表水生体外寄生虫的附着痕迹。在恐龙的长骨上也观察到了它，它可能代表甲虫幼虫的活动。