Catalog entries: Spongurus pylomaticus
Original description: Shell subcylindrical or elongate ellipsoidal, approximately twice as long as broad. An inner, densely spongy core is surrounded by a narrow mantle of less dense meshwork. Entire surface usually sparsely covered with bristle-like spines, which in many specimens tend to be longer at the two poles of the main axis. At one pole is a pylome, usually surrounded by short, irregular teeth.
(based on 29 specimens) Length 150-255 µm, breadth 78-125 µm. Length of surface spines 5-40 µm (usually broken off). Distinguishing characters (rw): his species differs from all others of the genus in the presence of a pylome
Remarks on original description: As indicated by Haeckel (1887, 343-345), the genus Spongurus is apparently cosmopolitan, this species, the only pylomatic member of the genus, has not been found anywhere but in the Antarctic, where it occurs in both the American and Indian Ocean sectors.
Similar species: pylomaticus
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:
Larcopyle pylomaticus compiled by the radiolaria@mikrotax project team viewed: 20-6-2021
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