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斯普里格蠕虫

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斯普里格蠕虫属
化石时期:埃迪卡拉纪晚期,555 Ma
弗氏斯普里格蠕虫的化石
科学分类 编辑
界: 动物界 Animalia
门: 前分节动物门 Proarticulata
纲: 头水母纲 Cephalozoa
科: 斯普里格蠕虫科 Sprigginidae
属: 斯普里格蠕虫属 Spriggina
Glaessner英语Martin Glaessner, 1958[1]
模式种
弗氏斯普里格蠕虫
Spriggina floundersi

Glaessner, 1958

斯普里格蠕虫学名Spriggina)又名斯普里格水母,是前寒武纪时代埃迪卡拉生物群的一种生物,其形状大致呈两侧对称的蠕虫状,其分类地位还不是很明朗,多数研究者认为它是动物,但也有人认为它属于已灭绝的一

描述

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Spriggina floundersi, life restoration at MUSE - Science Museum in Trento

本种大致呈两侧对称,身体很长,后部呈锥状不断缩小。前端较宽,呈圆形,由窄小、呈牙状的弧形“头部”所构成。身体被一条与其同长的中线分开,横切面为低矮、宽大的V形体节。[2]其两侧的体节呈滑移对称英语Glide reflection而非简单的两侧对称,因此这些体节被称为异构体节英语Isomer (Proarticulata)。滑移对称也出现在与斯普里格蠕虫约莫同时的另一种埃迪卡拉生物狄更逊水母

Digitally enhanced image of a Spriggina fossil

参考文献

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  1. ^ Glaessner, Martin F. New Fossils from the Base of the Cambrian in South Australia (PDF). Transactions of the Royal Society of South Australia. 1958, 81: 185–188. Template:BHLpage. (原始内容 (PDF)存档于29 September 2007). 
  2. ^ Walker, Cyril; Ward, David. Fossils. Smithsonian Handbooks revised, illustrated. Dorling Kindersley. 2002: 41. ISBN 0789489848. 

外部链接

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斯普里格蠕虫
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