| 1. | The position of hagfish in the phylum Chordata is not settled.
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| 2. | QSER1 is highly conserved in most species of the clade Chordata.
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| 3. | Pisces is in the Chordata phylum, which is in the Animalia kingdom.
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| 4. | Evolutionary origins of vertebrates as well as the phylum Chordata have not been scientifically determined.
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| 5. | Another researcher places them with the urochordates, based on putative affinity with the Phylum Chordata.
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| 6. | But Chordata, some would flatter themselves, required another hundred million years of evolutionary fine-tuning.
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| 7. | For example, Chordata includes fish . talk ) 15 : 53, 24 May 2012 ( UTC)
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| 8. | Both the Hemichordata and Chordata have gill slits, and primitive fossil echinoderms also show signs of gill slits.
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| 9. | As the name suggests, craniates are animals with a ( hard bone or cartilage ) skull in phylum Chordata.
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| 10. | In the Chordata the metameres of each tagma are fused to such an extent that few repetitive features are directly visible.
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