Protozoa - Radiolaria - Ethmosphaeridae
Synonyms: Cenosphaeridae Deflandre 1952, Liosphaeridae Campbell 1954
Parent taxon: Ethmosphaeracea according to A. R. Loeblich and H. Tappan 1961
Sister taxa: Actinommidae, Triposphaeridae
Subtaxa: Ethmosphaerinae Plegmosphaerinae
Ecology: passively mobile planktonic omnivore
Distribution:
• Quaternary of Indian Ocean (2 collections), Japan (4), North Pacific (4), Southern Ocean (2)
• Pliocene of North Pacific (1)
• Miocene to Pliocene of North Pacific (1)
• Cretaceous of Austria (1), Denmark (5), Italy (7), Malaysia (2), the Russian Federation (1), United States (10: California)
• Jurassic of Germany (7), Slovakia (1)
• Triassic of Albania (3), China (8), Hungary (2), Japan (1), Slovakia (1), Thailand (14)
• Permian of Thailand (1)
Total: 78 collections each including a single occurrence