Rossanella, Rigaud & Blau, 2016

Rigaud, Sylvain & Blau, Joachim, 2016, New robertinid foraminifers from the Early Jurassic of Adnet, Austria and their evolutionary importance, Acta Palaeontologica Polonica 61 (4), pp. 721-734 : 727

publication ID

https://doi.org/ 10.4202/app.00250.2016

publication LSID

lsid:zoobank.org:pub:F0E47468-2371-4F3F-974B-930C1E7D3C0B

persistent identifier

https://treatment.plazi.org/id/0B7387AC-FF9D-FF91-C709-FEF8FC22435B

treatment provided by

Felipe

scientific name

Rossanella
status

 

Genus Rossanella View in CoL nov.

Etymology: In honor of Rossana Martini (Department of Earth Sciences, University of Geneva, Switzerland) for her contributions to foraminiferal studies and biostratigraphy.

Type species: Rossanella martinii gen. et sp. nov.; monotypic, see below.

Diagnosis.—Involute Conorboididae with an inner-chamber, scroll-shaped structure fused to the aperture floor and an arch-like, interiomarginal aperture.

Remarks.—Morphologically, Rossanella gen.nov. appearsas an intermediate form between Triassic Praereinholdella and Jurassic–Cretaceous Conorboides . Contrary to Rossanella gen. nov., Praereinholdella does not possess inner-chamber structures whereas Conorboides presents a slightly more complex apertural system (e.g., low interiomarginal slit partially covered by a flap in Conorboides ).

The new genus shows strong morphological similarities with the?calcitic genus Placentulina Kasimova, 1978 , but differs in its less conic shape and arch-like aperture.

Stratigraphic and geographic range.—Uppermost Hettangian–lowermost Sinemurian (Lower Jurassic) of Adnet ( Austria).

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