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Cobricosphaeridium spiniferum ssp. elegans
Cobricosphaeridium spiniferum ssp. elegans, Harland and Sarjeant, 1970
Holotype: Harland and Sarjeant, 1970, pl.21, figs.4-5; text-fig.4
Locus typicus: Cobrico Swamp, Victoria, Australia
Stratum typicum: Holocene
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Original description: Harland and Sarjeant, 1970, p.219
Diagnosis:
A subspecies of C. spiniferum in which the conspicuous processes are longer, more flexible and delicate than those of typical specimens of the species.
Description:
Spherical to sub-spherical central body made up of two body layers, the outer giving rise to the ornamentation. Two process types are present. The larger processes are similar to those of C. spiniferum spiniferum except that they are longer, more slender, and appear more flexible. The shorter processes are entirely similar in character:
cingulum and sulcus are again poorly differentiated.
The archaeopyle is apical (A).
Dimensions:
Holotype: Length 41 µm, breadth 35 µm, larger processes from 9-12 µm in length and the smaller processes are on average 2 µm in length. Range: length 40 (42) 45 µm, breadth 32 (35.5) 39 µm, length of larger processes 8 (10) 12 µm, length of smaller processes range from 1-3 µm. Six specimens were measured, the total available material.
Affinities: (p.220):
This subspecies is quite well represented in the samples and is always readily distinguishable, on the character of its processes. No intermediate forms were encountered. A single differentiating character of such a nature is considered by the authors to be insufficient to justify taxonomic separation at specific level, until a much greater volume of information is available on the range of variation within the species C. spiniferum.
Holotype: Harland and Sarjeant, 1970, pl.21, figs.4-5; text-fig.4
Locus typicus: Cobrico Swamp, Victoria, Australia
Stratum typicum: Holocene
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: Harland and Sarjeant, 1970, p.219
Diagnosis:
A subspecies of C. spiniferum in which the conspicuous processes are longer, more flexible and delicate than those of typical specimens of the species.
Description:
Spherical to sub-spherical central body made up of two body layers, the outer giving rise to the ornamentation. Two process types are present. The larger processes are similar to those of C. spiniferum spiniferum except that they are longer, more slender, and appear more flexible. The shorter processes are entirely similar in character:
cingulum and sulcus are again poorly differentiated.
The archaeopyle is apical (A).
Dimensions:
Holotype: Length 41 µm, breadth 35 µm, larger processes from 9-12 µm in length and the smaller processes are on average 2 µm in length. Range: length 40 (42) 45 µm, breadth 32 (35.5) 39 µm, length of larger processes 8 (10) 12 µm, length of smaller processes range from 1-3 µm. Six specimens were measured, the total available material.
Affinities: (p.220):
This subspecies is quite well represented in the samples and is always readily distinguishable, on the character of its processes. No intermediate forms were encountered. A single differentiating character of such a nature is considered by the authors to be insufficient to justify taxonomic separation at specific level, until a much greater volume of information is available on the range of variation within the species C. spiniferum.