lamprey

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Female sea lamprey sucking on a rock in the Ocqueoc River, Michigan

Cory Olaf Brant

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Female sea lamprey sucking on a rock in the Ocqueoc River, Michigan

Cory Olaf Brant

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Female sea lamprey sucking on a rock in the Ocqueoc River, Michigan

Cory Olaf Brant
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Recent Stories

Sexual forms are not necessarily either male or female.

In a Neolithic community in Turkey, bone loss in older men and women showed, surprisingly, no significant sex differences.