References:
Foreman, H. P. (1973a). Radiolaria of Leg 10 with systematics and ranges for the families Amphipyndacidae, Artostrobiidae, and Theoperidae. Initial Reports of the Deep Sea Drilling Project. 10: 407-474. gs
This page provides data from the catalog of type descriptions. The catalog is sorted alphabetically. Use the current identification link to go back to the main database.
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Current identification/main database link: Amphipternis Foreman 1973
Original Description
Amphipyndacids with transverse, ring-like septum as in Amphipyndax. Collar structures (apical and vertical bars) depend from this septum into thoracic cavity where the primary and secondary lateral bars join the thoracic wall (figure 7).
Etymology: From the Greek amphi = double, and pternis = bottom of a dish.
Editors' Notes
This genus differs from Amphipyndax in having the collar structures elongated in the thoracic cavity rather than constricted and reuced to form a small chamber. Previously described species belonging to this genus include: Phormocampe alamedaensis Campbell and Clark, 1944b = ? Stichomitra alamedaensis (Campbell and Clark) Foreman, 1968, and Lithocampe ? clava Ehrenberg, 1873.
Stratigraphic range:Late Cretaceous.
Foreman, H. P. (1973a). Radiolaria of Leg 10 with systematics and ranges for the families Amphipyndacidae, Artostrobiidae, and Theoperidae. Initial Reports of the Deep Sea Drilling Project. 10: 407-474. gsReferences:
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Amphipternis compiled by the radiolaria@mikrotax project team viewed: 20-10-2020
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