门: 鳃曳动物门
纲: 未定
目：未定
科:古鳃曳科
属：葫芦虫属
种: 珍奇葫芦虫
描述:
珍奇葫芦虫个体长约10mm。身体分为大小大致相等的椭圆形内翻体和躯干，由较窄的颈部相连。刺状骨片分布在内翻体的前半部分，纵向大约20列。前面凸出的吻部比内翻体窄很多。躯干似乎是被一种较厚的角质层包裹，并显示出细的纵向条纹，可能是埋藏挤压的结果。肠道通常窄、直、平，呈深色。
Phylum: Priapulida
Class: uncertain
Order：uncertain
Family: Palaeopriapulites
Genus：Sicyophorus
Specie: Sicyophorus rarus
Description:
Individuals are about 10mm long. The body is divided into the approximately equal‐sized ovoid introvert and the trunk, which are connected by a narrower distinct neck region. Spine‐like scalids cover the anterior half of the introvert and are arranged in about 20 longitudinal rows. The protruding, anterior part of the proboscis is much narrower than the introvert. The trunk appears to be encased in a kind of thick cuticle and displays a number of fine longitudinal striations that are possibly the result of taphonomic compression. The intestine is typically narrow, straight, and flat and often preserved in a dark color. In some specimens the gut is curved near the posterior end of the trunk, where numerous hooks are observed.
时代：寒武系第二统第三阶Eoredlichia-Wutingaspis带
主要产地: 中国云南省东部澄江动物群（筇竹寺组玉案山段）
Age:Cambrian Series 2, Stage 3, Eoredlichia-Wutingaspis Zone
Principal localities: Chengjiang biota(Yu’anshan Member of the Chiungchussu Formation), eastern Yunnan Province, China
Hou Xian‐guang, et al. 2004. The Cambrian Fossils of Chengjiang, China: The Flowering of Early Animal Life. 233pp. Blackwell Publishing, Oxford, UK.
Maas, A., et al. 2007. Moatianshan‐Shale nemathelminths – morphology, biology and the phylogeny of Nemathelminthes. Palaeogeography, Palaeoclimatology, Palaeoecology, 254, 288–306.
Ma Xiao‐ya,et al. 2014. A new exceptionally preserved Cambrian priapulid from the Chengjiang Lagerstätte. Journal of Paleontology, 88, 371–384.