ARCHAEDISCIDA Poyarkov & Skvortsov, 1979
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publication ID |
https://doi.org/10.35463/j.apr.2024.02.07 |
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persistent identifier |
https://treatment.plazi.org/id/039C630F-1174-FFC1-FCEE-0B3CFDF1F2E6 |
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treatment provided by |
Felipe |
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scientific name |
ARCHAEDISCIDA Poyarkov & Skvortsov, 1979 |
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Order ARCHAEDISCIDA Poyarkov & Skvortsov, 1979 View in CoL
Proloculus followed by an undivided tubular chamber, diversely coiled: streptospiral, oscillating, sigmoidal, retrosigmoidal (i.e., eosigmoilinoid), planispiral, or helical. Involute or evolute. Only a superfamily, Tournayelloidea , is pseudoseptated. Umbilical pillars exist in helical forms (Lasiodiscina). Wall often bilayered with hyaline pseudofibrous and dark microgranular layers, or unilayered with one of these two layers. Aperture terminal simple; sutural apertures with appendices can exist (Lasiodiscina).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.