Original descriptions of taxa. For coccolithophores, and many calcispheres, these are pages from the Farinacci & Howe Catalog of Calcareous Nannofossils. In other cases (e.g. non-calcifying haptophytes) the data is directly compiled on this site. The "Catalogue of Calcareous Nannofossils" was originally compiled by Prof A. Farinacci 1969-1989, since 2000 it has been updated and extended by Richard Howe - see The Farinacci and Howe Catalog - an Introduction.
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Farinacci - Olladiscoaster vestigium.pdf
Varol & Bowman 2024 pl31 01.jpg
Varol & Bowman 2024 pl31 02.jpg
Varol & Bowman 2024 pl31 03.jpg
Varol & Bowman 2024 pl30 f01-24.jpg
Varol & Bowman 2024 fig 8-11.JPG
Varol & Bowman 2024 fig 8-12.JPG
Current identification:
Compiled data
Citation: Olladiscoaster vestigium Varol & Bowman 2024Taxonomic rank: speciesType specimens: Holotype: Plate 30, Figs. 1-24 (same specimen in mobile mount).Type age (chronostrat): Zone NN6, Middle Miocene.Standardised type level: 122_MIDDLE MIOCENEType locality: USGS-NASA Langley core Hampton, VA, USAType repository: Varol Research, LlandudnoRepository Country: Wales
Original Description Hexagonal, gently stellate species of Olladiscoaster have diamond-shaped segments with quasi-arms. On the distal side, the distinct sutural ridges are created by the deep cavities. The sutural ridges are raised towards the centre and capped by boomerang-shaped distal covers. The distinct proximal ridges with a large petaloid knob decorate the bulged proximal side. The proximal knob is dominant in the side view of Olladiscoaster vestigium. Size: Dimensions of holotype: Maximum diameter: 7.26 µm, Maximum height: 6.11 µm; Diameter of the central area: 5.26 µm, Diameter of the proximal knob: 5.25 µm, Height of the proximal knob: 2.02 µm, Length of the quasi-arm: 1.00 µm, (measurements from bright field micrograph). Etymology: From the Latin vestigium, trace - refers to its vestigial arm Extra details from original publication Remarks:Olladiscoaster vestiguum differs from Olladiscoaster tokerae by having a large proximal knob and a more squarish appearance of its segments.
Occurrence: This species is recorded from ODP Leg 154, Hole 926A Cear? Rise, IODP Leg 354, Hole 1451B, Ninetyeast Ridge, Bengal Fan, Indian Ocean, USGS-NASA Langley core 134.4 m, Hampton, VA, USA and various commercial oil wells in the Gulf of Mexico.
Stratigraphic range: Middle Miocene (Zones NN5-NN6). Editors' Notes The species is variously refered to Olladiscoaster vestigium andOlladiscoaster vestiguum in the paper. The etymology makes it clear the correct spelling is vestigium.
References:
Varol, O. & Bowman, A. R. (2024). The new Middle Miocene genus Olladiscoaster, and related and associated discoasters. Grzybowski Foundation Special Publication. 28: 1-102. gs
Olladiscoaster vestigium: Catalog entry compiled by Jeremy Young. Viewed: 5-3-2026