Branchiostoma lanceolatum
cephalochordate
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circulatory system
- In circulatory system: Chordata
Amphioxus (Branchiostoma lanceolatum) is a cephalochordate that possesses many typical vertebrate features but lacks the cranial cavity and vertebral column of the true vertebrate. Its circulatory pattern differs from that of most invertebrates as the blood passes forward in the ventral and backward in the dorsal…
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