Document Detail


Middle cambrian arthropod embryos with blastomeres.
MedLine Citation:
PMID:  17793458     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
A phosphatized Middle Cambrian ( approximately 510 million years ago) fauna from Duyun, southern China, has yielded fossil embryos that may be of arthropod affinity and could belong to the co-occurring eodiscid trilobite Pagetia sp. The shell was most likely flexible and possessed at least two thin layers. Four embryos reveal blastomeres, and two embryonic stages are represented. These embryos demonstrate that the basic paradigm for the growth of the invertebrate embryo has not changed in more than half a billion years.
Authors:
X G Zhang; B R Pratt
Related Documents :
9407598 - Leucine sources for 10.5-day rat conceptus in vivo.
9449218 - Assessment of the embryotoxic potential of the total hydrolysis product of fumonisin b1...
12237948 - Aberrant methylation patterns at the two-cell stage as an indicator of early developmen...
15607538 - Leptin enhances porcine preimplantation embryo development in vitro.
6168708 - Purification and characterization of streptococcal proliferative factor.
1414158 - In vitro effect of 1,25-dihydroxyvitamin d3 on proliferation and collagen synthesis by ...
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Science (New York, N.Y.)     Volume:  266     ISSN:  0036-8075     ISO Abbreviation:  Science     Publication Date:  1994 Oct 
Date Detail:
Created Date:  2010-06-08     Completed Date:  2010-07-02     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0404511     Medline TA:  Science     Country:  United States    
Other Details:
Languages:  eng     Pagination:  637-9     Citation Subset:  -    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Causes of Decadal Climate Variability over the North Pacific and North America.
Next Document:  Motions and Relaxations of Confined Liquids.