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Title: Foraminifera
Caption: Light micrograph of the foraminifera Peneroplis pertusus. "Forams" are single-celled marine animals dating back to the Cambrian period. Distant cousins of amoebae, their calcium carbonate shells grow in spirals, one chamber at a time as the organism grows larger.
Category: SCIENCE • Animals
Credit: Album / Science Source / Eric V. Grave
Image size: 4200 × 2839 px | 34.1 MB
Print size: 35.6 × 24.0 cm | 1653.5 × 1117.7 in (300 dpi)