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Guide to Neidium sacoense

Reimer 1966

Neidium Sacoense Guide
Credit: David Burge
  1. Valve margins straight, except near apices
  2. Apices cuneate
  3. Longitudinal canals broad
  4. Proximal raphe ends variable

Valves are broad, with linear margins tapering to cuneate ends. Longitudinal canals are broad and positioned at the valve margins. Proximal raphe ends are variable, ranging from perpendicular to the raphe to recurved.