Back
Oligokolpoma galeottii
Oligokolpoma galeottii Pross et al. 2010, p.230, pl. 3, figs.1–10.
Holotype: Pross et al. 2010, pl. 3, figs.1–3. Age: Oligocene.
Original description (Pross et al. 2010)
Holotype: Sample PAC 17.5, slide 1, England Finder coordinates U41/4, Plate 3, Figs. 1–3.
Paratype: Sample PAC 30.5, (slide 1, EF (Q37/1), Plate 3, Figs. 4–6.
Etymology: After Dr. Simone Galeotti, benthic foraminifer paleontologist.
Type locality: Pieve d'Accinelli section, Central Italy.
Type stratum: Scaglia Cinerea.
Diagnosis: Oligokolpoma galeottii is a small species of Oligokolpoma. The endo- and periphragm are smooth. The apical archeopyle (tA) has a circular outline. The hollow tubular processes are distally closed and striate. The paracingular and parasulcal paraplates are typically not reflected by processes. Dimensions: Height: 22 (25) 28 μm, width: 22 (25) 33 μm, process length: 12–15 μm (n= 5). Description: A small species of Oligokolpoma with slender, distally closed hollow cylindrical processes. The processes have striae. The endo- and periphragm are smooth and, between the processes, closely appressed. The archeopyle is apical (tA) and has a circular outline. The operculum is free.
Discussion: Oligokolpoma galeottii differs from Hystrichokolpoma species by its very small size and the possession of only one process type. Typically, there are no sulcal and paracingular processes. The species differs from Oligokolpoma tubulus Fensome et al., 2009 by having a smaller antapical plate and by having slender rather than broad preand postcingular processes. It differs from Homotryblium oceanicum Eaton, 1976 by its archeopyle formation (apical versus epicystal), its distally closed processes and its smaller size.
Holotype: Pross et al. 2010, pl. 3, figs.1–3. Age: Oligocene.
Original description (Pross et al. 2010)
Holotype: Sample PAC 17.5, slide 1, England Finder coordinates U41/4, Plate 3, Figs. 1–3.
Paratype: Sample PAC 30.5, (slide 1, EF (Q37/1), Plate 3, Figs. 4–6.
Etymology: After Dr. Simone Galeotti, benthic foraminifer paleontologist.
Type locality: Pieve d'Accinelli section, Central Italy.
Type stratum: Scaglia Cinerea.
Diagnosis: Oligokolpoma galeottii is a small species of Oligokolpoma. The endo- and periphragm are smooth. The apical archeopyle (tA) has a circular outline. The hollow tubular processes are distally closed and striate. The paracingular and parasulcal paraplates are typically not reflected by processes. Dimensions: Height: 22 (25) 28 μm, width: 22 (25) 33 μm, process length: 12–15 μm (n= 5). Description: A small species of Oligokolpoma with slender, distally closed hollow cylindrical processes. The processes have striae. The endo- and periphragm are smooth and, between the processes, closely appressed. The archeopyle is apical (tA) and has a circular outline. The operculum is free.
Discussion: Oligokolpoma galeottii differs from Hystrichokolpoma species by its very small size and the possession of only one process type. Typically, there are no sulcal and paracingular processes. The species differs from Oligokolpoma tubulus Fensome et al., 2009 by having a smaller antapical plate and by having slender rather than broad preand postcingular processes. It differs from Homotryblium oceanicum Eaton, 1976 by its archeopyle formation (apical versus epicystal), its distally closed processes and its smaller size.