NIGPAS OpenIR  > 中国科学院南京地质古生物研究所
Cellular and subcellular structure of neoproterozoic animal embryos
Hagadorn, James W.; Xiao, Shuhai; Donoghue, Philip C. J.; Bengtson, Stefan; Gostling, Neil J.; Pawlowska, Maria; Raff, Elizabeth C.; Raff, Rudolf A.; Turner, F. Rudolf; Chongyu, Yin
Source PublicationSCIENCE

Stereoblastic embryos from the Doushantuo Formation of China exhibit occasional asynchronous cell division, with diminishing blastomere volume as cleavage proceeded. Asynchronous cell division is common in modern embryos, implying that sophisticated mechanisms for differential cell division timing and embryonic cell lineage differentiation evolved before 551 million years ago. Subcellular structures akin to organelles, coated yolk granules, or lipid vesicles occur in these embryos. Paired reniform structures within embryo cells may represent fossil evidence of cells about to undergo division. Embryos exhibit no evidence of epithelial organization, even in embryos composed of similar to 1000 cells. Many of these features are compatible with metazoans, but the absence of epithelialization is consistent only with a stem-metazoan affinity for Doushantuo embryos.

WOS KeywordDoushantuo Formation ; Southwest China ; Fossil Embryos ; Taphonomy ; Algae
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000241194100039
Document Type期刊论文
Corresponding AuthorHagadorn, James W.
Affiliation1.Amherst Coll, Dept Geol, Amherst, MA 01002 USA
2.Virginia Polytech Inst & State Univ, Dept Geosci, Blacksburg, VA 24061 USA
3.Univ Bristol, Dept Earth Sci, Bristol BS8 1RJ, Avon, England
4.Swedish Museum Nat Hist, Dept Palaeozool, SE-10405 Stockholm, Sweden
5.Indiana Univ, Dept Biol, Bloomington, IN 47401 USA
6.Univ Sydney, Sch Biol Sci, Sydney, NSW 2006, Australia
7.Chinese Acad Geol Sci, Inst Geol, Beijing, Peoples R China
8.Chinese Acad Sci, Nanjing Inst Geol & Paleontol, State Key Lab Paleobiol & Strat, Nanjing 210008, Peoples R China
9.Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland
10.Univ So Calif, Dept Earth Sci, Los Angeles, CA 90089 USA
Recommended Citation
GB/T 7714
Hagadorn, James W.,Xiao, Shuhai,Donoghue, Philip C. J.,et al. Cellular and subcellular structure of neoproterozoic animal embryos[J]. SCIENCE,2006,314(5797):291-294.
APA Hagadorn, James W..,Xiao, Shuhai.,Donoghue, Philip C. J..,Bengtson, Stefan.,Gostling, Neil J..,...&Nealson, Kenneth H..(2006).Cellular and subcellular structure of neoproterozoic animal embryos.SCIENCE,314(5797),291-294.
MLA Hagadorn, James W.,et al."Cellular and subcellular structure of neoproterozoic animal embryos".SCIENCE 314.5797(2006):291-294.
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