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Haikouichthys

Haikouichthys
Thời điểm hóa thạch: 535–520 triệu năm trước đây
Phục hồi
Phân loại khoa học
Giới (regnum)Animalia
Ngành (phylum)Chordata
(không phân hạng)Craniata
Liên lớp (superclass)Agnatha
Họ (familia)Myllokunmingiidae
Chi (genus)Haikouichthys
Các loài
  • H. ercaicunensis Luo et al., 1999 (type)

Haikouichthys /ˌhkˈɪkθɪs/ là một chi tuyệt chủng động vật có xương sống trong động vật có hộp sọ được cho là đã sống 530 triệu năm trước đây, trong thời gian bùng nổ kỷ Cambri của cuộc sống đa bào. Haikouichthys đã có một hộp sọ được xác định và các đặc điểm khác đã dẫn các nhà khảo cổ gọi nó là một động vật có hộp sọ thật sự, và thậm chí được cho là một trong những loài cá sớm nhất.[1][2]

Hình ảnh

Chú thích

  1. ^ “Bản sao đã lưu trữ”. Bản gốc lưu trữ ngày 29 tháng 4 năm 2009. Truy cập ngày 4 tháng 11 năm 2013.
  2. ^ Donoghue, P.C.J.; Purnell, M.A. (2005), “Genome duplication, extinction and vertebrate evolution” (PDF), Trends in Ecology & Evolution, 20 (6): 312–319, doi:10.1016/j.tree.2005.04.008, PMID 16701387, Bản gốc (PDF) lưu trữ ngày 17 tháng 12 năm 2008, truy cập ngày 4 tháng 11 năm 2013

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