Discoaster catillomicros

de Kaenel & Bergen in de Kaenel et al., 2017 Jan 30, 2025

Set number: 3861

  • Discoaster catillomicros VR 17999 1
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    10µm
Discoaster catillomicros, Middle Miocene, IODP Expedition 354, Hole U1451B, Bengal Fan, Indian Ocean

Set number: 3862

  • Discoaster catillomicros 29561 1
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    10µm
Discoaster catillomicros, Middle Miocene, Mississippi Canyon, Gulf of Mexico

Set number: 3860

  • Discoaster catillomicros VR 18703 1
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    10µm
Discoaster catillomicros, Late Miocene, ODP Leg 154, Hole 926A, Ceará Rise, western equatorial Atlantic.

In the mobile mount.

Set number: 3859

  • Discoaster catillomicros VR 18644 1
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    10µm
Discoaster catillomicros, Late Miocene, ODP Leg 154, Hole 926A, Ceará Rise, western equatorial Atlantic.

In the mobile mount.
Final Epithet
Discoaster catillomicros de Kaenel & Bergen in de Kaenel et al., 2017
Basionym

Discoaster catillomicros de Kaenel & Bergen in de Kaenel et al., 2017

Description

Emended description: Relatively small six-segmented species have very short arms (much less than one-third of the central area diameter), a large central area ornamented with prominent sutural ridges created by deep cavities on the distal side and a proximal platform constructed by the ridges on the bulging central area. The inner-arm areas are very shallow but very wide. Careful focus is required to identify the proximal platform.

Remarks

Discoaster catillomicros differs from Discoaster pugliesei and Discoaster stellimicros by having very shallow but very wide inter-arm areas, whereas Discoaster pugliesei has round, almost enclosed inter-arm areas and Discoaster stellimicros half moon-shape deeper inner-arm areas. The presence of distinct sutural ridges and deep cavities differentiate Discoaster catillomicros from Discoaster micros.

References

De Kaenel, E., Bergen, J. A., Browning, E., Blair, S. A. & Boesiger, T.M. 2017. Uppermost Oligocene to Middle Miocene Discoaster and Catinaster taxonomy and stratigraphy in the circum North Atlantic Basin, Gulf of Mexico and ODP Leg 154. Journal of Nannoplankton Research, 37 (2-3): 215–244.

Taxonomy
Discoaster
Biostratigraphy
  • Phanerozoic
    • Cenozoic
      • Neogene
        • Miocene
          • Late Miocene
            • Tortonian
          • Middle Miocene
            • Serravalian
Stratigraphic Range
Serravalian - Tortonian
Zone(s)
NN6 - NN8
Age (Ma)
13.40 - 11.58
Holotype
Discoaster catillomicros VR 17988

Discoaster catillomicros de Kaenel & Bergen in de Kaenel et al., 2017

Middle Miocene

South Trinidad