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Haeckeliella inconstans
Dumitrica, 1973
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Description - Add description
Description: Shell is composed of two concentric lattice-spheres, a macrosphere and a cortical sphere. The macrosphere is thin-walled, 80 to 90µ in diameter, with polygonal pores irregularly arranged and separated by slender intervening bars. One or more inner wands may sometimes extend centripetally without reaching the center. Cortical shell is thick-walled. It is connected with the macrosphere by forty, fifty or more thin radial beams that extend beyond the cortical shell as stout, cylindrical, or three-bladed spines of variable length and usually with their distal ends irregularly ramified. Their length, aspect in cross section (circular or three-bladed), and type of distal ramifications while varying with specimens are similar in the same specimen. The cortical shell has quite irregular pores, in size, shape and arrangement. Pores are seldom simple, they are often complicated by centripetal ingrowths from the pore-walls, which end by dividing them into two or more secondary pores (Plate 18, Figure 9).
Holotype: Plate 7, Figures 1 and 2; Plate 18, Figure 7. Quaternary, 127-14-5, 26-29cm.
Dimensions (based on fourteen specimens): Diameter of the macrosphere is 80 to 90µ, inner diameter of the cortical shell is 115 to 130µ, and outer diameter of the cortical shell is 140 to 162µ. Length of cortical spines is 25 to 170µ and most frequently 50 to 90µ.
Remarks: This new species, the second of the genus, differs from the type species by its thick-walled cortical sphere, by length and type of ramification of the radial spines, and by lacking a tripod at their base. It was found only in 127-14-5. | | Dumitrica 1973 |
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