radiolaria - rads_cenozoic - Cladococcus abietinus radiolaria - rads_cenozoic - Cladococcus abietinus

Cladococcus abietinus


Classification: rads_cenozoic -> Actinommidae -> Astrosphaeridae -> Cladococcus -> Cladococcus abietinus
Sister taxa: C. abietinus, C. cervicornis, C. megaceros, C. nakasekoi, C. pinetum, C. scoparius, C. stalactites, C. viminalis, C. sp.

Taxonomy

Citation: Cladococcus abietinus Haeckel 1887
Taxonomic rank: species
Basionym: Cladococcus abietinus
Synonyms:
1887 Cladococcus stalactites - Haeckel p. 227; p1. 27, fig. 4
1887 Cladococcus abietinus - Haeckel p. 226-227; pl. 27, fig. 3
1966 Cladococcus stalactites - Benson p. 173-175; pl. 6, figs. 2-3
1974 ?Cladococcus abietinus - Renz p. 789; pl. 13, fig. 18
1983 Cladococcus stalactites - Benson p. 501; pl. 4, fig. 2

From Suzuki Paleotax db:

1887 Cladococcus (Cladococcurus) abietinus n. sp. Haeckel p. 226-227, pl. 27, fig. 3
1974 Cladococcus abietimus Haeckel (?) Renz p. 789, pl. 13, fig. 18
1981 Cladococcus abietinus Haeckel Takahashi & Honjo p. 147, pl. 2, fig. 10
1982 Cladococcus abietinus Haeckel Blueford p. 195, pl. 2, figs. 1a, 1b
1984 Cladococcus abietinus Haeckel, 1887 Nishimura & Yamauchi p. 27, pl. 12, figs. 1, 6, pl. 49, figs. 7, 10, pl. 50, figs. 5a, 5b
1990 Cladococcus abietinus Haeckel Fujioka pl. 39, fig. 1
1991 Cladococcus abietinus Haeckel Takahashi p. 67, pl. 10, fig. 5
1996 Cladococcus abietinus Haeckel Chen & Tan p. 171, pl. 7, figs. 7, 8, pl. 39, figs. 9, 10
1999 Cladococcus abietinus Haeckel Sashida & Kurihara fig. 7.16
2012 Cladococcus abietinus Haeckel Krsinic & Krsinic pl. 2, fig. 12
2015 Cladococcus abietinus Haeckel Matsuzaki et al. p. 14, fig. 2.21

Catalog entries: Cladococcus abietinus

Original description: Pores irregular, roundish, twice to four times as broad as the bars; six to ten on the radius. About twenty radial spines, two to three times as long as the shell diameter, branched like a pine tree, with straight, stout, three-sided pyramidal stem. From the dentated edges arise numerous verticillate branches, the proximal ends of which are thickly ramified. Differs from the preceding and similar species mainly in the large size and irregular lattice-work of the shell.

Diameter of the shell 0.12 to 0.14, pores 0.006 to 0.012, bars 0.003; length of the spines 0.25 to 0.4, breadth 0.012. [dimensions in mm]
Remarks on original description: Haeckel listed Cladococcus abietinus under the subgeneric name Cladococcurus, but did not include the subgeneric name in the species name.

The "preceding species" refers to C. pinetum Haeckel, 1887a.

Description


Published descriptions


Benson 1966 - Cladococcus stalactites

Test consisting of two shells in completely developed specimens, inner shell absent in most tests; outer shell with 12-22 or more, heavy, three-bladed, long, regularly disposed radial spines which continue inward as thin cylindrical beams joining with the surface of the inner shell, if present. Outer shell spherical but with irregular outline but relatively smooth surface, with irregular, unequal pores of all shapes and sizes, without polygonal frames, 9-14 on the half circumference. Inner shell spherical to subspherical,thin-walled, generally with relatively large, equal, hexagonal pores separated by thin intervening bars, 10-12 on the half circumference. Radial spines very broad at their bases and in several specimens with a single pore piercing each blade, proximally; edges of each blade serrated; originating from each blade at a common level in all spines are prominent, lateral, arborescent branches which curve outward but do not anastomose with similar branches from adjacent spines.

Measurements: based on 30 specimens from stations 34, 46, 60, 81, 92, 93, 106, 133, and 136: diameter of outer shell 113-144 m, of inner shell 68-80 µm, of common level defined by the positions of the lateral arborescent branches 209-363 µm; length of radial spines 105-258 µm.

Remarks: The specimen of Cladococcus stalactites illustrated by Haeckel differs from the majority of the Gulf specimens in the lack of serrations or thorns along the edge of each blade of the three-bladed radial spines. The presence of the inner shell is not constant within the specimens from the Gulf; therefore, several if not most specimens conform to the genus Cladococcus Müller.

Distribution: This species is very rare in the Gulf sediments. Its distribution in the northern half of the Gulf is spotty. It is present in this region only at stations 106, 115, 133, 136, 151, and 208.In the southern Gulf it is absent only at stations 27, 90, and 199.It thus has a greater affinity for the more nearly oceanic waters of the southern Gulf than for the warmer, slightly more saline waters of the northern Gulf. It is absent at most marginal localities. Its frequency in the Gulf is too low for analysis of its possible response to upwelling. This species is apparently confined to tropical seas because it has not been reported from high latitudes. Haeckel (1887, p. 227) reports it from the western tropical Pacific at Challengerstation 220. \ From: Benson, 1966, p. 173-175; pl. 6, figs. 2-3:Cladococcus stalactites HaeckelCladococcus stalactites Haeckel, 1887, Challenger Rept., Zool., vol. 18, p. 227, P1. 27, fig. 4.


Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): Extant. Data source: Lazarus et al. 2015 - "R age group"
First occurrence (base): within Quaternary Period (0.00-2.59Ma, base in Gelasian stage). Data source: Lazarus et al. 2015 - "R age group"

Plot of occurrence data:

References:

Benson, R. N. (1966). Recent Radiolaria from the Gulf of California. Thesis, Minnesota University. 1-577. gs

Benson, R. N. (1983). Quaternary radiolarians from the Mouth of the Gulf of California, Deep Sea Drilling Project Leg 65. Initial Reports of the Deep Sea Drilling Project. 65: 491-523. gs

Haeckel, E (1887). Report on the Radiolaria collected by H.M.S. Challenger during the years 1873-1876. Report on the Scientific Results of the Voyage of H.M.S. Challenger during the years 1873-1876. 18: 1-1803. gs O

Renz, G. W. (1974). Radiolaria from Leg 27 of the DSDP. Initial Reports of the Deep Sea Drilling Project. 27: 769-841. gs O


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Cladococcus abietinus compiled by the radiolaria@mikrotax project team viewed: 16-2-2025

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