predatory insect of western North America having a long necklike prothorax
例句与用法
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Most notable fossils from this area are from the terrestrial jurassic especially in jiulongshang formation of middle jurassic and yixian formation of late jurassic , where abundant insect fossils such as snakeflies and lacewings and other insects have been discovered , providing important evidence for the study of the origin and early evolution of insects 该区大部分著名的陆生化石主要采自于中侏罗世的九龙山组和晚侏罗世的义县组地层中。在这些化石中，昆虫化石(如蛇蛉目和脉翅目)极为丰富，为研究昆虫的起源和早期演化提供了重要的证据。
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