This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Radiolaria Challenger Plate . follows Plate Aulacanthida Diam Fig Aulographis candelabrum sp The dark phodium surrounding the central capsule on its oral part part of the surrounding alveolate calymma also surrounding the central capsule the veil of tangential needles covering the surface of the alveolate calymma the big radial