- Loxonema
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▪ fossil genusgenus of extinct gastropods (snails) found as fossils in rocks of Ordovician to Early Carboniferous age (488 million to 318 million years ago). Loxonema has a distinctive high-spired, slender shell with fine axial ornamentational lines. A distinct lip is present at the base of the aperture of the main whorl.
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Universalium. 2010.