A family of marine diatoms that includes the genus Biddulphia, characterized by their distinctive geometric silica shells.
From genus 'Biddulphia' + suffix '-aceae' (the standard Latin suffix for biological families). Named after the Biddulph collection, this follows Linnaean taxonomy naming conventions.
The family Biddulphiaceae contains species so geometrically perfect they look like they were engineered—their silica shells are so symmetrical that mathematicians have studied them as examples of natural fractal-like patterns.
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