Cephalochordata, the second subphylum of Acraniata, have fish-like bodies with a notochord extending the entire length, no head, and lack respiratory organs; a key example is Branchiostoma lanceolatum (Amphioxus).
2. Unterstamm von Acraniata, Körper, Anwesenheit von Chorda dorsalis?, Eigenart, Beispiel: Cephalochordata: Fischartiger Körper. Kein Kopf, aber Schwanz ist vorhanden. Chorda dorsalis erstreckt sich über die gesamte Länge des Körpers. Kein Organ für die Atmung. Branchiostoma Lanceolatum (Amphioxus).
| Front | 2nd subphylum of acraniata body presence of notochord? peculiarity example |
|---|---|
| Back | Cephalochordata: Fish-like body. No head, but tail is present Notochord extends the entire length of body No organ for respiration Branchiostoma Lanceolatum (Amphioxus) |
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