Hyperammina subnodosa

Hyperammina subnodosa (Brady, 1884)

Archimerismus subnodosus (Brady). Jones 1994, p 33 pl 23 figs 11-14

 

Hyperammina subnodosa 1

  • Intact specimen, aperture to left
  • Collected: July 1987, S Barents Sea, 20 mwd, modern mud

Hyperammina subnodosa 2

  • Arrangement of agglutinated particles near the aperture
  • Rose Bengal stained
  • Collected: July 1987, S Barents Sea, 20 mwd, modern mud

Hyperammina subnodosa 3

  • Specimen with the apertural end cracked open (a) and the details of the outer (b) and inner (c) surface. The small round bodies and the gifs, particularly noticeable on the outer surface, are likely a secondary fungus overgrowth.
  • Collected: July 1987, S Barents Sea, 20 mwd, modern mud

Remarks:

A large agglutinating foraminifer common for the Barents-Kara shelf; abundant in organic-rich mud from any shelf depth where such sediment occurs (20 through 300m); often comprises the bulk of foraminiferal biomass; rare to absent in oligotrophic areas and in sands; has a low fossilization potential.

0