Like the rest of this website, the glossary is a work in progress. If we’ve missed a term, please contact us to let us know the term and references.
A lateral sternum is a thickening of silica without pores on the valve face parallel to the sternum and interrupting the striae. One lies on each side of the sternum. The pair connect at the central node, becoming lyrate (having the shape of a lyre). A freshwater example in Mastogloia pumila is illustrated on this page.
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