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1965 Desmospyris spongiosa - Hays p. 173, pl.2, fig. 1
1975 Desmospyris spongiosa - Chen pl. 15, figs. 1-2
1976 Desmospyris spongiosa - Weaver pl. 1, fig. 12
1983 Desmospyris spongiosa - Weaver pl. 2, figs. 6-8
From Suzuki Paleotax db:
1965 Desmospyris spongiosa n. sp. Hays p. 173, 175, pl. 2, fig. 1
1973 Desmospyris spongiosa Hays Petrushevskaya fig. 3.22
1975 Desmospyris spongiosa Hays Chen p. 456, pl. 15, figs. 1, 2
1975 Desmospyris spongiosa Hays Keany & Kennett pl. 2, figs. 13, 14, pl. 3, fig. 8
1975 Desmospyris spongiosa Hays Petrushevskaya p. 593, pl. 10, figs. 33, 34, pl. 27, fig. 8
1976 Desmospyris spongiosa Hays Weaver p. 579, pl. 1, fig. 12
1979 Dsmospyris spongiosa Hays Keany p. 54, pl. 2, fig. 12, pl. 3, fig. 1
1983 Desmospyris spongiosa Hays Weaver pl. 2, figs. 6-8
1992 Delmospyris aff. spongiosa (Hays) [sic] Gladenkov & Devyatkin pl. 21, fig. 5
Catalog entries: Desmospyris spongiosa
Original description: Shell heavy, spongy, divided into two segments by indistinct collar stricture. Cephalis bilocular with indistinct sagittal stricture, wall thick, pores circular, irregular in size and arrangement, one to two times width at bars. Sagittal ring D-shaped, joined at base to walls of cephalis by four beams, forming four large basal pores. Thorax subcylindrical, transverse section oval, basally truncate, slightly constricted at mouth, wall often spongy and thinner than wall of cephalis. Basal feet usually not present, but some specimens show several poorly developed feet.
Remarks on original description: D. spongiosa does not occur in the recent surface sediments of the area. It is usually an abundant member of zone Phi and has a range similar to the range of Eucyrtidium calvertense, i.e., its upper limit corresponding approximately to the change from red clay to diatomite deposition. In two cores, V-16-66 and V-17-88, Desmospyris spongiosa is a much less important part of the Phi-zone assemblage than it is in the other cores that contain this zone. Both of these cores were taken north of the present position of the Polar Front and have considerable numbers of warm-water species in their tops. In V-16-66 Calocyclas amicae and Lamprocyclas maritalis are found in the Phi below 720 cm. It may be that D. spongiosa was more restricted to cold water than the other members of the zone and thus is poorly represented m cores containing warm-water species.
Geological Range:
Last occurrence (top): within Neogene Period (2.59-23.03Ma, top in Piacenzian stage). Data source: Lazarus et al. 2015 - "N age group"
First occurrence (base): within Neogene Period (2.59-23.03Ma, base in Aquitanian stage). Data source: Lazarus et al. 2015 - "N age group"
Plot of occurrence data:
Hays, J. D. (1965). Radiolaria and late Tertiary and Quaternary history of AntarcticSeas. American Geophysical Union, Antarctic Research Series 5, Llano, G. A.. 125-184. gs Weaver, F. M. (1976). Antarctic Radiolaria from the southeast Pacific basin, Deep Sea Drilling Project, Leg 35. Initial Reports of the Deep Sea Drilling Project. 35: 569-603. gs Weaver, F. M. (1983). Cenozoic radiolarians from the southwest Atlantic, Falkland Plateau region, Deep Sea Drilling Project Leg 71. Initial Reports of the Deep Sea Drilling Project. 71: 667-686. gs Missing or ambiguous references: Chen 1975;References:
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Desmospyris spongiosa compiled by the radiolaria@mikrotax project team viewed: 10-10-2026
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