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Current identification/main database link: Prunopyle titan Campbell & Clark 1944
Original Description
Size:
Etymology:
Extra details from original publication
Presence of several different sizes of individuals among specimens examined in this Miocene material suggests strong influence of temperature upon shell formation. As with other pelagic protozoans, notably loricate ciliates, this accounts for presence of many dwarfed individuals among species otherwise large in size. These small individuals are thus probably not result of unusual water conditions or other adverse factors in environment but rather follow perhaps normal temperature changes in medium. That these small individuals are younger than larger individuals is hardly possible as these shells appear to lack intussusceptional growth. Both large and small individuals occur side by side but may have been formed at different times.
Campbell, A. S. & Clark, B. L. (1944). Miocene radiolarian faunas from southern California. Geological Society of America, Special Papers. 51: 1-76. gsReferences:

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Prunopyle titan compiled by the radiolaria@mikrotax project team viewed: 8-2-2026
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