These are known as the pterygotids.

这些被称为翼龙。

These claws were so robust that they often preserved better than the thin exoskeleton, and sometimes they're the only parts that remain in fossils of pterygotids.

这些爪子非常坚固， 通常比薄薄的外骨骼保存得更好，有时它们是翼龙化石中唯一保留下来的部分。

Many pterygotids reached over 1 meter in length, but the king of them all was Jaekelopterus — the largest arthropod that has ever lived, maxing out at 2.5 meters long.

许多翼龙的长度超过 1 米，但其中之王是 Jaekelopterus——有史以来最大的节肢动物，最长可达 2.5 米。