ISSN:
1476-4687
Quelle:
Nature Archives 1869 - 2009
Thema:
Biologie
,
Chemie und Pharmazie
,
Medizin
,
Allgemeine Naturwissenschaft
,
Physik
Notizen:
[Auszug] Fig. 1 Nichols' hypothetical ancestral echinoderm, in cross section. Nichols' reconstruction, like many primitive echinoderms, has mouth, hydropore and anus in a straight line. Such an animal must live with the anus on the downstream side, to carry waste products away from mouth and hydro-pore ...
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1038/250082a0
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