Cenomanian Cephalopods of Bellezma-Aures mountains, NE Algeria: Taxonomy and biostratigraphy

Aouissi, Riadh; Salmi-Laouar, Sihem; Qot, Gamal M. El; Ferré, Bruno

doi:10.1016/j.annpal.2020.102409

Cited by 10 publications

(5 citation statements)

References 31 publications

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“…The Cenomanian paleogeographical and paleoenvironmental reconstruction model adopted by Slami et al (2018) and Aouissi (2020) for this region shows that the marine transgression was interrupted by a regressive phase during the middle Cenomanian. The paleogeographic scheme of the Eastern Saharan Atlas domain indicates that the Batna Mountains are located around the ramp-basin transition (Herkat, 2004).…”

Section: Geological Settingmentioning

confidence: 96%

“…This formation has been recognized and studied in several sections (Hamla, Thénièt El Manchar, Metrassi and Bouarif) with varying thickness (Figure 2). Previous works (Slami et al, 2018;Aouissi et al, , 2020 on the Marnes de Smail Formation divided it into four informal units, from base to top: (i) Unit A (marls with ammonites and exogyrine oysters) corresponding to the Mantelliceras mantelli (Sowerby)/Sharpeicera laticlavium (Sharpe) and Mantelliceras dixoni (Spath) zones; (ii) Unit B (marls with Aspidiscus cristatus) dated by the Cunningtoniceras inerme (Pervinquière), Acanthoceras rhotmagense (Brongniart) and Acanthoceras amphibolum (Morrow) zones; (iii) Unit C (Marls with oysters), and (iv) Unit D (limestones and marls with Caprinula or Pycnodonte).…”

Section: Geological Settingmentioning

confidence: 99%

“…The area was marked by carbonate sedimentation during the whole Cenomanian (Herkat, 2004). The environment triggered the proliferation of a diverse invertebrate macrofauna, among which the bivalves dominated the benthic communities (Fournel, 1849;Coquand, 1862;Péron, 1883;Guiraud, 1973;Aouissi et al, 2018Aouissi et al, , 2020Slami et al, 2018;Bensekhria et al, 2019;Salmi-Laouar et al, 2019). The Cenomanian age of all these bivalve assemblages is indicated by the associated ammonite faunas (Aouissi et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

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Cenomanian bivalves from Batna Mountains (Saharan Atlas, NE Algeria)

Aouissi¹,

Salmi-Laouar²,

Qot³

et al. 2022

Rev. bras. paleontol.

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In the Batna Mountains, the Cenomanian Marnes de Smail Formation yield fossiliferous deposits mostly dominated by bivalves. Thirty-five bivalve species were identified, belonging to nine orders, 19 families and 26 genera. Five of them are mentioned for the first time from the Cenomanian of the study area (i.e., Nucula ? cf. margaritifera Douvillé, Barbatia (Barbatia) aegyptiaca Fourtau, Cucullaea trigona Seguenza, Arctica inornata d’Orbigny, and A. cordata Sharpe). Their distribution provided interesting insights on the marine paleoenvironment of the Cenomanian times. The paleobiogeographic distribution of the studied bivalves corresponds to the Tethys Realm. Keywords: Bivalvia, Cretaceous, Cenomanian, Algeria, Batna, Tethys

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Section: Geological Settingmentioning

confidence: 96%

Section: Geological Settingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Cenomanian bivalves from Batna Mountains (Saharan Atlas, NE Algeria)

Aouissi¹,

Salmi-Laouar²,

Qot³

et al. 2022

Rev. bras. paleontol.

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“…The stratigraphic distribution of this scleractinian established by these authors extends the Cunningtoniceras inerme Zone from the base of the middle Cenomanian, to the Acanthoceras jukesbrownei and the Acanthoceras amphibolum Zone, at the top of the middle Cenomanian (Table 2). The abundance distribution of this taxon corresponds to the Acanthoceras rhotomagense Zone, from the middle part of the middle Cenomanian (Aouissi et al, 2020).…”

Section: Zonation Based On Ammonites and Coralsmentioning

confidence: 99%

“…According to Aouissi et al (2018Aouissi et al ( , 2020 and Salmi-Laouar et al (2019), in the Batna province, most of the specimens of Aspidiscus cristatus were collected in the middle part of the "Marnes de Smail" Formation. The stratigraphic distribution of this scleractinian established by these authors extends the Cunningtoniceras inerme Zone from the base of the middle Cenomanian, to the Acanthoceras jukesbrownei and the Acanthoceras amphibolum Zone, at the top of the middle Cenomanian (Table 2).…”

Section: Zonation Based On Ammonites and Coralsmentioning

confidence: 99%

Quantitative analysis and paleoenvironmental reconstruction of the middle Cenomanian deposits from southern Bellezma-Batna Mountains (northeastern Algeria)

Benmansour,

Kherchouche,

Bouteraa

et al. 2023

Rev. bras. paleontol.

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The middle Cenomanian deposits of the southern part of the Bellezma-Batna Mountains, northeastern Algeria, have been investigated to evaluate the response of Foraminifera to variations of paleo-bathymetry, oxygen, and salinity. The Djebel Azeb section, with a thickness of 40 m, is composed of a clay-marl mass interspersed with lumachellic limestone layers. It makes up the middle part of the ‘’Marnes de Smail’’ Formation. The Turrilites acutus Subzone of the upper part of the Acanthoceras rhotomagense Zone corresponds to the Aspidiscus cristatus Total Range Zone, and the Rotalipora cushmani Zone was recognized based on the study of ammonites, scleractinian and planktic foraminifera in this section. The statistical analysis of the foraminifera yielded only one assemblage of planktic foraminifera with globular chambers and trochospiral test belonging to the Cenomanian–Turonian; no association is typically restricted to the middle Cenomanian. The benthic foraminifera are poorly represented, belonging to the orders Textulariina, Lituolina, Trochamminina, Verneuilinina, Loftusiina, Orbitolinina, Miliolina, and Rotaliina. These foraminifera assemblages indicate that the bottom-water conditions during the middle Cenomanian were characterized by periodic changes in the oxygen and salinity. All planktic foraminifera species are opportunists related to poorly oxygenated, eutrophic conditions interspersed by a short interval of well-oxygenated environment with Planolites. The maximum abundance of Whiteinella and Muricohedbergella and the minimum amount of Planoheterohelix species within the Cenomanian of Djebel Azeb reflect dwindling palaeosalinity during this time, except for a slight increase in the middle of the section. Keywords: Foraminifera, corals, biostratigraphy, oxygen, salinity, Cretaceous.

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