| 11. | The mantle is simple and forms a thin-edged flap over the branchial cavity.
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| 12. | In addition, this transcription factor plays an important role in limb and branchial arch development.
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| 13. | The mouth is located at the apex of the funnel, between the two branchial stalks.
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| 14. | The branchial plume is single ."
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| 15. | Both the openings of the branchial and atrial siphons possess lighter colored ridges on their rims.
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| 16. | Ostracods typically have no gills, instead taking in oxygen through branchial plates on the body surface.
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| 17. | The branchial syphon is large and surrounded by six large lobes; the cloacal syphon is small.
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| 18. | Their branchial ( or oral ) siphons are conical and positioned at the top of the body.
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| 19. | Protected within which are the branchial chambers which contain the respiratory organs of " Eurypterus ".
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| 20. | This siphonal opening also serves for the exit of the water that has entered by the branchial opening.
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