射齿目，通常被称为奇虾，是一类繁盛于寒武纪时期的较为原始的节肢动物，同时也是当时海洋生态系统中的顶级掠食者，它们对认识节肢动物的起源演化以及理解早期地球生态系统都至关重要。文章从研究历史、谱系演化、生长发育、生 物古地理和宏演化等方面简要综述了射齿目的研究现状和问题展望。

 Radiodonta, emblemized by the iconic Anomalocaris, represents a clade of rather primitive arthropods that thrived in the Cambrian period and served as top predators in the marine ecosystem of that time. They are crucial for understanding the origin and evolution of arthropods, as well as the early Earth's ecosystems. Here we provide a brief review regarding the research progress of radiodonts, including research history, evolutionary relationships, growth and ontogeny, biogeography, and macroevolutionary, as well as prospects for future research.