Wrapping the armadillo's penis

Richard Wassersug
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Richard Wassersug: Dalhousie University

Nature, 1997, vol. 388, issue 6645, 826-827

Abstract: Biological hydrostats (for example, elephants’ trunks or our own tongues) hold their shape because the pressure of the fluid inside is resisted by tension in the surrounding sheath. This sheath must be strong, and it is reinforced by helically wound supporting fibres in most hydrostats. But a new study shows that the penis of the nine-banded armadillo is reinforced by longitudinal and circumferential fibres -- a pattern that has never been seen before.

Date: 1997
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DOI: 10.1038/42130

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