Lara Horstmann points out corpus luteum and corpus albicans in a walrus ovary at a University of Alaska Fairbanks lab. (Courtesy Photo | Casey Clark via the University of Alaska Fairbanks)

Lara Horstmann points out corpus luteum and corpus albicans in a walrus ovary at a University of Alaska Fairbanks lab. (Courtesy Photo | Casey Clark via the University of Alaska Fairbanks)

Tooth collections offer clues about walrus reproduction

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