Videos 1 - 3 for Hemichordata

05:58 -1 year ago
group of scientists on a virtually unknown phylum of marine organisms, the hemichordates, has helped explain some of the major mysteries of the origin of vertebrates. This is ...
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02:00 -1 year ago
Enteropneust (Protoglossus graveolens)relaxed and filter feeding ... enteropneust hemichordate acorn worms pterobranch protoglossus graveolens ...
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10:01 -1 year ago
Episodio 2: Una voz en la fuga c�smica Contenido: La historia de los Heike y la selecci�n evolutiva artificial de los cangrejos que parecen samurais. La evoluci�n biol�gica a ...
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