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Acanthella corrugata. Whole sponge, viewed olbiquely from above.
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Axinella acanthifera. Transverse section of lobe showing axial skeleton and radiating fibers.
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Acanthella corrugata. From a section vertical to the surface and radial to the margin; below extreme marginal region. Mesial part of lamella and one surface are shown.
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Axinella acanthifera. Longitudinal section through subcylindrical lobe, including both surfaces.
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Acanthella corrugata. Section vertical to the surface and radial to the margin; including margin and both surfaces of the sponge.
