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Paper Nautilus Octopuses
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Description: The argonauts (genus Argonauta, the only extant genus in the Argonautidae family) are a group of pelagic octopuses. They are also called paper nautiluses, referring to the paper-thin eggcase that females secrete. This structure lacks the gas-filled chambers present in chambered nautilus shells and is not a true cephalopod shell, but rather an evolutionary innovation unique to the genus Argonauta. Argonauts use tentacles to grab prey and drag it toward the mouth.
Source: Winchell, Alexander Sketches of Creation (New York: Harper & Brothers, 1870) 110
Keywords: fossils, octopuses, paper nautilus, paper nautiluses, Argonauta, Argonautidae family
Copyright: 2009, Florida Center for Instructional Technology. See license.
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