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Vertebrates

One of just two vertebrates without a jaw, sea lampreys that are wreaking havoc in Midwestern fisheries are simultaneously helping scientists understand the origins of two important stem cells.

Jawless Lampreys Reveal Ancient Secrets of Vertebrate Evolution

Top and left images are adult sea lampreys. On the right is a fluorescence microscopy image of a developing sea lamprey embryo.

An awkward family reunion: Sea monsters are our cousins

Shark

Virgin birth in sharks not always a ‘Hail Mary’ to get pregnant

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