falcoid
adjEtymology Latin falx (“sickle”) + -oid (“like”).
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Biology, Malacology, Natural sciences In reference to ribs on shells, in the shape of a wave but initially straight, spoon shaped.
- Falcoid: The ribs form a clear wave with no or a weak wave through2016, Sreepat Jain, Fundamentals of Invertebrate Palaeontology: Macrofossils, pages 66–67: