https://www.usgs.gov/publications/miocene-actinommid-radiolaria-equatorial-pacific
Miocene actinommid Radiolaria from the equatorial Pacific | U.S. Geological Survey
Actinommids (spumellarian Radiolaria) are a group of microfossils in which taxonomy and phylogeny hitherto have been based on features of morphology that...
from theu smioceneradiolaria