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掘头虫类三叶虫张氏虫ChangaspisLee in Chien,1961是黔东、湘西广泛分布的杷榔组中常见的化石。本属化石建立7个种,具有较高的多样性。近年在贵州东部地区的杷榔组采集到此属化石的大量标本,特别是在剑河交榜村的杷榔组发现了Changaspis丰富的化石,提供了分类学再研究的重要材料。据新的化石标本的详细鉴定、个体发育观测及数理统计数据的对比、化石埋藏状态的研究,Changaspis已描述的7个种是过高估计,原属C.micropygeChien,1961,C.elongataLee in Chien,1961,C.placentaQian et Lin in Zhanget al.,1980,C.longispina(Lee,in Egorovaet al.,1963),C.nangaoensisLu et Chien in Yin and Lee,1978,C.?transversaZhou in Zhouet al.,1977和C.taihuensisZhang et Zhou,1985之间形态差异并不明显。C.micropyge,C.placenta应为C.elongata的晚出同义名,而C.longispina,C.nangaoensis,C.taihuensis和C.transversa建种时化石标本少,保存不好,应是C.elongata晚出同义名。
Exterminator Insect Trilobites Diplodiae ChangspisLee in Chien, 1961 is a common fossil found in the widely distributed group of honeysuckle in eastern Guizhou and western Hunan. The fossil set up seven species, with a high diversity. In recent years, a large number of specimens of this fossil have been collected from the group of loquat nuts in the eastern part of Guizhou. In particular, the Changaspis-rich fossils have been found in the group of loquat trees in Jiaobang Village of Jianhe River, providing an important material for further study in taxonomy. According to the detailed identification of new fossil specimens, the contrast between individual developmental observations and mathematical statistics, and the study on the burial status of fossils, the seven species described by Changaspis are overestimated and originally belong to C.micropygeChien, 1961, C.elongataLee in Chien , 1961, C. placenta Qian et Lin in Zhanget al., 1980, C. longispina (Lee, in Egorovaet al., 1963), C. nangaoensis Lu et Chien in Yin and Lee, 1978, C. transversa Zhou in Zhou et al. The morphological differences between 1977 and C.taihuensis Zhang et Zhou, 1985 are not obvious. C.micropyge, C.placenta should be the late synonymous of C.elongata, while C. longispina, C.nangaoensis, C.taihuensis and C.transversa have few fossil specimens at the time of planting, and should not be preserved well. elongata late out synonymous.