Back
Spiniferites graciosus
Spiniferites graciosus (Hansen, 1977) Stover and Williams, 1987
Originally Hafniasphaera, subsequently (and now) Spiniferites.
Holotypus: Hansen, 1977, fig.18
Locus typicus: Tuba 13 well, Copenhagen, Denmark
Stratum typicum: Danian
Original diagnosis: Hansen, 1977, p.15: Hafniasphaera graciosa
Hafniasphaera with subspherical, thinwalled central body containing numerous evenly distributed vesicles with a diameter less than 0.5 µm. Simple processes circular in cross section, hollow, distally open, trifurcate, bifid.
Description: Hansen, 1977, p.15: Hafniasphaera graciosa
Central body with a very weak paratabulation, generally only visible on the dorsal side, of plates 1"-3", 1"-6", 1c-6c, 2"""-6""", 1"""". Paracingulum narrow, Sutures indicated as extremely fine folds of the periphragm. Cyst wall two-layered. Vesicles mostly confined to the endophragm, but processes may also contain vesicles. Simple processes trumpet-shaped below the trifucation. Cingular processes often complex and branched.
Dimensions: Central body: Short diameter 48-68 µm, average 57.6 µm. Long diameter 55-80 µm, average 65.4 µm. Overall diameter: Short diameter 83-108 µm, average 95.8 µm. Long diameter 92-115 µm, average 104.6 µm.
Originally Hafniasphaera, subsequently (and now) Spiniferites.
Holotypus: Hansen, 1977, fig.18
Locus typicus: Tuba 13 well, Copenhagen, Denmark
Stratum typicum: Danian
Original diagnosis: Hansen, 1977, p.15: Hafniasphaera graciosa
Hafniasphaera with subspherical, thinwalled central body containing numerous evenly distributed vesicles with a diameter less than 0.5 µm. Simple processes circular in cross section, hollow, distally open, trifurcate, bifid.
Description: Hansen, 1977, p.15: Hafniasphaera graciosa
Central body with a very weak paratabulation, generally only visible on the dorsal side, of plates 1"-3", 1"-6", 1c-6c, 2"""-6""", 1"""". Paracingulum narrow, Sutures indicated as extremely fine folds of the periphragm. Cyst wall two-layered. Vesicles mostly confined to the endophragm, but processes may also contain vesicles. Simple processes trumpet-shaped below the trifucation. Cingular processes often complex and branched.
Dimensions: Central body: Short diameter 48-68 µm, average 57.6 µm. Long diameter 55-80 µm, average 65.4 µm. Overall diameter: Short diameter 83-108 µm, average 95.8 µm. Long diameter 92-115 µm, average 104.6 µm.