Vetulicolians are weird. First, they were thought to be an arthropod because of their segmentation, but due to the presence of gill slits and nothocord, Vetulicolians are now placed as stem chordates.... continue reading
posted by newtboy
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Vetulicolians are weird. First, they were thought to be an arthropod because of their segmentation, but due to the presence of gill slits and nothocord, Vetulicolians are now placed as stem chordates.... continue reading
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