Amphistegina d’Orbigny 1826

Schönfeld, Joachim & Lübbers, Julia, 2020, Checklist, assemblage composition, and biogeographic assessment of Recent benthic foraminifera (Protista, Rhizaria) from São Vincente, Cape Verdes, Zootaxa 4731 (2), pp. 151-192 : 163

publication ID

https://doi.org/ 10.11646/zootaxa.4731.2.1

publication LSID

lsid:zoobank.org:pub:560FF002-DB8B-405A-8767-09628AEDBF04

DOI

https://doi.org/10.5281/zenodo.3648492

persistent identifier

https://treatment.plazi.org/id/DF72A832-FFCB-FFF1-FF2D-FF20FD5CFDDD

treatment provided by

Plazi

scientific name

Amphistegina d’Orbigny 1826
status

 

Genus Amphistegina d’Orbigny 1826 View in CoL

Amphistegina gibbosa d’Orbigny 1839b, p. 120 View in CoL , pl. 8, figs. 1–3 [Plate 4, Figs. 15–17, Plate 5, Figs. 1 View FIGURE 1 –3]. Crouch & Poag (1979), p. 91, pl. 1, figs 5, 8. Eichler et al. (2019), fig. 1. ” Amphistegina lessonii ” Bock (1971) View in CoL , p. 58, pl. 21, fig. 10. Note: Amphistegina lessonii d’Orbigny 1826 View in CoL occurs in the Pacific, and the slightly more compressed Amphistegina gibbosa d’Orbigny 1839b View in CoL is confined to the Atlantic ( Larsen 1977). Amphistegina lessonii View in CoL is sinistrally coiled and shows 8 chambers per whorl, while Amphistegina gibbosa View in CoL is dextrally coiled and has on average 15 chambers per whorl ( Crouch & Poag 1979). In fact, 17 of 26 well preserved Amphistegina View in CoL specimens of the dead assemblage from Sao Pedro are dextrally coiled and show 12 to 14 chambers. The Cape Verdean specimes show a high variability from plano-convex to biconvex shape, as it has been observed off Brazil ( Eichler et al. 2019). The thickness of most tests resembles the High Light morphotype of Hallock et al. (1986, there Figure 4).

Kingdom

Chromista

Phylum

Foraminifera

Class

Globothalamea

Order

Rotaliida

Family

Amphisteginidae

Loc

Amphistegina d’Orbigny 1826

Schönfeld, Joachim & Lübbers, Julia 2020
2020
Loc

Amphistegina lessonii ”

Bock 1971
1971
Loc

Amphistegina gibbosa d’Orbigny 1839b , p. 120

d'Orbigny 1839: 120
1839
Loc

Amphistegina gibbosa d’Orbigny 1839b

d'Orbigny 1839
1839
Loc

Amphistegina gibbosa

d'Orbigny 1839
1839
Loc

Amphistegina lessonii d’Orbigny 1826

d'Orbigny 1826
1826
Loc

Amphistegina lessonii

d'Orbigny 1826
1826
Loc

Amphistegina

d'Orbigny 1826
1826
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