WoRMS Photogallery
Endothyranella armstrongi Plummer, 1930
Description Plummer, H. J. (1930). Calcareous foraminifera in the Brownwood shale near Bridgeport, Texas. University of Texas bulletin. 3019: 5-21., available online at https://repositories.lib.utexas.edu/bitstream/handle/2152/23276/UT-bulletin-no3019.pdfpage(s): p. 18, pI. 1, figs. 9-1 (holotype fig. 9).
9. Holotype; a, side view of mature test, b, peripheral view of same; c, apertural view of final chamber. 10. Paratype, showing curved linear portion of a test, a rare condition in this species, and due probably to deformation during growth. 11. Thin section, showing way in which chambers are added, the average three whorls in the coiled portion, and typical endothryine apertures. 12. Paratype, young test that shows the plane of the penultimate whorl not coincident with that of the final whorl; aperture typically endothryine. 13. Paratype, showing test in full coiled development; aperture endothryine. 14. Paratype, showing test in first stage of uncoiling; aperture high on septal face but not wholly terminal. 15. Paratype, showing mature test of average full development. PNG file - 650.98 kB - 823 x 740 pixels added on 2026-03-1313 viewsWoRMS taxa Endothyranella armstrongi Plummer, 1930 †checked Le Coze, François 2026-03-13
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