皱囊虫属

(重定向自皱囊虫
冠状皱囊虫
如何讀生物分類框

化石时期:540 Ma
寒武紀幸运期
Saccorhytus coronarius.jpg
皱囊虫复原图
科学分类 编辑
界: 动物界 Animalia
科: 皱囊虫科 Saccorhytidae
Han, Shu, Ou and Conway Morris, 2017
属: 皱囊虫属 Saccorhytus
种: 冠状皱囊虫 S. coronarius
二名法
Saccorhytus coronarius
Han, Shu, Ou and Conway Morris, 2017

皱囊虫屬(学名:Saccorhytus),又名皺囊動物,属于后口动物总门,由单一物种冠状皱囊虫Saccorhytus coronarius)代表。 大约生活在5.4亿年前的寒武紀幸运期,它是已知最原始的后口动物。[1][2]

该物种的化石是由来自英国,中国和德国的科学家团队在中国陕西省发现的,[1]该研究结果于2017年1月首次发表。[3][4]

描述编辑

皱囊虫呈椭球形,成体大小约1.3毫米[3][5],腹面具有可伸缩的环状口部[6] ,表面有4对体锥,却无尾部和肛门。出现了被认为是鳃裂构造雏型的成对排水鳃孔的特征。

  1. ^ 1.0 1.1 Ghosh, Pallab. Scientists find 'oldest human ancestor'. BBC. 30 January 2017 [30 January 2017]. 
  2. ^ Bag-like sea creature was humans' oldest known ancestor. Phys.org. 30 January 2017 [30 January 2017] (英语). 
  3. ^ 3.0 3.1 Han, Jian; Morris, Simon Conway; Ou, Qiang; Shu, Degan; Huang, Hai. Meiofaunal deuterostomes from the basal Cambrian of Shaanxi (China). Nature. 2017. ISSN 0028-0836. doi:10.1038/nature21072. 
  4. ^ Wade, Nicholas. This Prehistoric Human Ancestor Was All Mouth. New York Times. 30 January 2017 [31 January 2017]. (原始内容存档于2017-01-31). 
  5. ^ Khan, Amina. Humans, meet the ancient sea creature at the other end of your family tree. Los Angeles Times. 31 January 2017 [1 February 2017]. 
  6. ^ Lindermann, Katherine. Meet your earliest known ancestor: Saccorhytus. ResearchGate. (Interview). 30 January 2017 [30 January 2017] (英语).