Their body fossils are known from at least the early Cambrian - and they're still alive today.

它们的身体化石至少在寒武纪早期就已为人所知——它们至今仍然存在。

It's named for the many body fossils of Kimberella - the suspected trace-maker - that are preserved on or near these traces.

它以保存在这些痕迹上或附近的许多 Kimberella（疑似痕迹制造者）的身体化石而得名。

Like, in 1996, another paleontologist  analyzed pterosaur body fossils alongside Pteraichnus trackways to determine that pterosaurs probably had a flat-footed, semi-erect  posture while they walked on all fours.

比如，在 1996 年，另一位古生物学家分析了翼龙的身体化石和 Pteraichnus 的足迹，以确定翼龙在四肢行走时可能有扁平足、半直立的姿势。

The study of these trackways is called ichnology, and there are nine different trackways from three locations in Ireland that are all older than the oldest tetrapod body fossils we've found.

对这些足迹的研究称为生态学，爱尔兰三个地点有九种不同的足迹， 它们都比我们发现的最古老的四足动物身体化石还要古老。