Orbulina (orb-you-line-a) - light microscopic image of a living planktonic foraminifer showing the large, spherical calcitic shell that encloses a smaller more dense spiral shell attached laterally on the inside. Numerous spines radiate out from the surface of the shell and contain dinoflagellate algal symbionts that are enclosed by the foraminferal cytoplasm that streams outward along the spines.
A living planktonic foraminifer with a multi-chambered, calcitic shell and numerous radiating spines that are attached to the surface of the shell. Algal symbionts, enclosed by the foraminferal cytoplasm that streams out of the shell, appear as golden-yellow spherules scattered along the surface of the spines.
Orbulina (orb-you-line-a) universa, a large planktonic foraminiferan, with algae distributed along the radiating pseudopodia. This is a juvenile form, with numerous symbiotic algae. This is an example of one of the four types of large amoebae which is common in the marine water column. Dark ground image by Dave Caron.
Orbulina universa, a colonial pelagic foraminifera, this is a adult form in which the juvenile chambers are enclosed within a single large chamber. This is an example of one of the four types of large amoebae which is common in the marine water column. Dark ground image by Dave Caron.
Description: Globigerina (planktonic foraminifera) ab. 500 µm. Date: 20 May 2011, 22:51:01. Source: Own work. Author: Hannes Grobe. Other versions: : This file has been extracted from another file: Foram-globigerina hg.jpg : .
Description: Globigerina (planktonic foraminifera) ab. 500 µm. Date: 20 May 2011, 22:51:01. Source: Own work. Author: Hannes Grobe. Other versions: This file has an extracted image: File:Detail, Foram-globigerina hg (cropped).jpg..
Description: English: Test of the foraminifer Globigerina bulloides with defensive spines, drawn by paleontologist H. B. Brady in 1884. Date: 15 October 2014, 06:37:27. Source: http://www.marinespecies.org/photogallery.php?album=772&pic=36019. Author: Henry Bowman Brady.