Calcicalathina sp.1

Jan 22, 2026

Set number: 2872

  • Calcicalathina pseudoalta 1051 1
  • Calcicalathina pseudoalta 1052 2
    10µm
Calcicalathina sp.1, Late Aptian, Eastern Gulf of Mexico

Set number: 2873

  • Calcicalathina pseudoalta 1079 1
  • Calcicalathina pseudoalta 1080 2
    10µm
Calcicalathina sp.1, Late Aptian, Eastern Gulf of Mexico

Set number: 2874

  • Calcicalathina pseudoalta 1066 1
  • Calcicalathina pseudoalta 1067 2
    10µm
Calcicalathina sp.1, Late Aptian, Eastern Gulf of Mexico
Final Epithet
Calcicalathina sp.1
Basionym

Calcicalathina sp.1

Dimensions Of Holotype

The wall remains in constant extinction, its optic axis (c‑axis) oriented perpendicular to the microscope stage, whereas the central area exhibits weak birefringence with 1st‑order greyish‑white interference colours.

Description

Small species of Calcicalathina characterised by a narrow wall and a granulated central area, with no distal process present.

Taxonomy
Calcicalathina
Biostratigraphy
  • Phanerozoic
    • Mesozoic
      • Cretaceous
        • Early Cretaceous
          • Middle Cretaceous
            • Albian
              • Early Albian
            • Aptian
              • Early Aptian
Stratigraphic Range
Early Aptian - Early Albian
Age (Ma)
119.55 - 110.22