Deuterammina eddystonensis Brönnimann and Whittaker, 1990

Camacho, S, Moura, D, Connor, S, Scott, DB & Boski, T, 2015, Taxonomy, ecology and biogeographical trends of dominant benthic foraminifera species from an Atlantic-Mediterranean estuary (the Guadiana, southeast Portugal), Palaeontologia Electronica 52 (4), pp. 1-37 : 19

Deuterammina eddystonensis Brönnimann and Whittaker, 1990

Figure 2.31-2.32

1990 Deuterammina eddystonensis Brönnimann and Whittaker : pl. 4, figs. 1-8; pl. 8, fig. 2.

2001 Deuterammina eddystonensis Brönnimann and Whittaker ; Debenay, Tsakiridis, Soulard and Grossel, p. 86, pl. 1, figs. 17, 18.

2004 Deuterammina eddystonensis Brönnimann and Whittaker ; Diz, Francés, Costas, Souto and Alejo, p. 270, pl. 1, fig. 7.

Morphological description. Wall is thin and agglutinated; the test is low trochospirally enrolled and slightly concavo-convex; chambers increasing in size as added; sutures are radial and the periphery is rounded.

Occurrence. Very rare species in the live fraction

(common in dead fraction).

Figures

FIGURE 2. Scanning electron micrographs of the foraminifera specimens. Scale bar equals 100 µm. 1-3- Three different specimens of Polysaccammina ipohalina Scott, 1976b, illustrating the differences in size and form. In all specimens it is possible to see attached organic matter; 4-5- Polysaccammina hyperhalina Medioli, Scott, and Petrucci, 1983. 4- complete specimen of P. hyperhalina; 5- aperture view; 6- specimen with several side branches; 7-10- different sized specimens of Ammovertellina sp.; 11-14- various specimens of Reophax nana Rhumbler, 1913; 15-17- Leptohalysis scottii (Chaster, 1892); 15 and 16- side view of two complete specimens; 17- detail on the agglutination of the last chamber; 18- complete specimen of Ammobaculites exiguus Cushman and Brönnimann, 1948b; 19- Ammobaculites sp. with the uncoiled portion broken; 20-22- Ammotium salsum (Cushman and Brönnimann, 1948a); 20- best specimen; 21- smaller specimen; 22- aperture detail; 23- Ammotium sp.; 24-26- different specimens of Miliammina fusca (Brady, 1870); 27-28- Miliammina obliqua Heron-Allen and Earland, 1930; 27- view of the interio-marginal arch of the aperture; 29-30- Arenoparrella mexicana (Kornfeld, 1931); 29- ventral side with view to main aperture and supplementary apertures; 30- dorsal side with view to supplementary apertures; 31-32- Deuterammina eddystonensis Brönnimann and Whittaker, 1990; 31- dorsal view; 32- ventral view; 33-35- Jadammina macrescens (Brady, 1870); 33- dorsal view; 34- ventral view; 35- dorsal view of a deformed test.