Towards a standard Tithonian to Valanginian calpionellid zonation of the Tethyan Realm

Lakova, Iskra; Petrova, Silviya

doi:10.2478/agp-2013-0008

Cited by 48 publications

(32 citation statements)

References 35 publications

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“…While S. tenella characterizes all the stratigraphic distribution of the “pelagic” crinoids (latest early Kimmeridgian–late Tithonian), S. vernioryi is only recorded from the lower to middle Tithonian in the Central and Northern Apennines (Manni & Nicosia, ). Moreover, chitinoidellids are absent in our thin‐section; according to Andreini, Caracuel, and Parisi () and Lakova and Petrova (), the chitinous forms appear all over the Tethys in the latest early Tithonian. These data, coupled with the presence of Globuligerina oxfordiana that characterizes the Bajocian and Kimmeridgian facies of the UMS basin, allow to constrain the age of the teeth to the late early Kimmeridgian–earliest early Tithonian (Figure ).…”

Section: Geological Settingsupporting

confidence: 55%

Hybodont dentition from the Upper Jurassic of Monte Nerone Pelagic Carbonate Platform (Umbria‐Marche Apennine, Italy) and its ecological implications

et al. 2018

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Here we describe a number of articulated teeth of a hybodont shark from Upper Jurassic deposits of the Monte Nerone Pelagic Carbonate Platform, in the Umbria‐Marche‐Sabina Palaeogeographic Domain (Northern Apennines, Central Italy). The material has been referred to as Asteracanthus cf. A. magnus, a quite well‐known taxon already reported from Middle to Upper Jurassic deposits of Europe. Teeth indicate an extreme crushing feeding behaviour, suggesting as putative prey both infaunal and epifaunal hard‐shelled invertebrates dwelling the sea‐floor, such as large bivalves, brachiopods, gastropods as well as vagile crustaceans. The finding represents, to date, the first formal report of hybodont shark in the Umbria‐Marche‐Sabina Domain, throwing further light on the ecology within Pelagic Carbonate Platform settings, and on the occurrence of Asteracanthus in the Late Jurassic of the Western Tethys.

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Section: Geological Settingsupporting

confidence: 55%

Hybodont dentition from the Upper Jurassic of Monte Nerone Pelagic Carbonate Platform (Umbria‐Marche Apennine, Italy) and its ecological implications

et al. 2018

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“…This association characterizes the Remaniella Subzone and corresponds to the upper part of B zone of Remane (1963Remane ( , 1971. According to Oloriz et al (1995), Pop (1994Pop ( , 1996, Andreini et al (2007) and Lakova and Petrova (2013), it correlates to the Remaniella ferasini Subzone (see Rehakova and Michalik 1997).…”

Section: Remaniella Subzonementioning

confidence: 99%

“…The calpionellid zonation used in this work is that established by Rehakova and Michalik (1997); Remane et al (1986); Pop (1994Pop ( , 1997 and Lakova and Petrova (2013) (Text-fig. 7).…”

Section: Calpionellid Biostratigraphymentioning

confidence: 99%

The lower and middle Berriasian in Central Tunisia: Integrated ammonite and calpionellid biostratigraphy of the Sidi Kralif Formation

Maâlaoui¹,

Zargouni²

2016

Acta Geologica Polonica

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:Maalaoui, K. and Zargouni, F. 2016. The lower and middle Berriasian in Central Tunisia: Integrated ammonite and calpionellid biostratigraphy of the Sidi Kralif Formation. Acta Geologica Polonica, 66 (1), 43-58. Warszawa.The lower and middle Berriasian sedimentary succession of the Sidi Kralif Formation has been a subject of biostratigraphic study in two key sections in Central Tunisia. Our contribution is an attempt to better define the basal Berriasian interval, between the Berriasella jacobi Zone and the Subthurmannia occitanica Zone. Zonal schemes are established using ammonites and calpionellids, and these permit correlation with other regions of Mediterranean Tethys and beyond. The use of biomarkers afforded by microfossil groups has allowed characterization and direct correlation with four widely accepted calpionellid sub-zones, namely Calpionella alpina, Remaniella, Calpionella elliptica and Tintinopsella longa. The two ammonite zones of Berriasella jacobi and of Subthurmannia occitanica are recognised on the basis of their index species. The parallel ammonite and calpionellid zonations are useful as a tool for correlation and calibration in time and space, thus allowing a better definition of a J/K boundary. The presence of four Berriasian calpionellid bioevents is recognised: (1) the 'explosion' of Calpionella alpina, (2) the first occurrence of Remaniella, (3) the first occurrence of Calpionella elliptica and (4) the first occurrence of Tintinopsella longa. The last is here documented as coeval with the presence of Subthurmannia occitanica, which marks the lower/middle Berriasian boundary.

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“…Calpionella Zone, Alpina Subzone (sensu Pop 1974;Remane et al 1986;Reháková & Michalík 1997;Lakova et al1999;Boughdiri et al 2006;Andreini et al 2007;Lakova & Petrova 2013). Biomicrite wackestone is composed of radiolarian, radiolarian-calpionellid and calpionellid microfacies (29 beds between 298-339; Fig.…”

Section: Crassicollaria Zone Intermedia Subzonementioning

confidence: 99%

Stratigraphy, plankton communities, and magnetic proxies at the Jurassic/Cretaceous boundary in the Pieniny Klippen Belt (Western Carpathians, Slovakia)

Michalı́k¹,

Reháková²,

Grabowski³

et al. 2016

Geologica Carpathica

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Abstract:A well preserved Upper Tithonian-Lower Berriasian Strapkova sequence of hemipelagic limestones improves our understanding of environmental changes occurring at the Jurassic/Cretaceous boundary in the Western Carpathians. Three dinoflagellate and four calpionellid zones have been recognized in the section. The onset of the Alpina Subzone of the standard Calpionella Zone, used as a marker of the Jurassic/Cretaceous boundary is defined by morphological change of Calpionella alpina tests. Calpionellids and calcified radiolarians numerically dominate in microplankton assemblages. The first occurrence of Nannoconus wintereri indicates the beginning of the nannofossil zone NJT 17b Subzone. The FO of Nannoconus steinmannii minor was documented in the lowermost part of the Alpina Subzone. This co-occurrence of calpionellid and nannoplankton events along the J/K boundary transition is typical of other Tethyan sections. Correlation of calcareous microplankton, of stable isotopes (C, O), and TOC/CaCO 3 data distribution was used in the characterization of the J/K boundary interval. δ 13 C values (from +1.09 to 1.44 ‰ VPDB) do not show any temporal trends and thus show a relatively balanced carbon-cycle regime in sea water across the Jurassic/ Cretaceous boundary. The presence of radiolarian laminites, interpreted as contourites, and relatively high levels of bioturbation in the Berriasian prove oxygenation events of bottom waters. The lower part of the Crassicolaria Zone (up to the middle part of the Intermedia Subzone) correlates with the M19r magnetozone. The M19n magnetozone includes not only the upper part of the Crassicollaria Zone and lower part of the Alpina Subzone but also the FO of Nannoconus wintereri and Nannoconus steinmannii minor. The reverse Brodno magnetosubzone (M19n1r) was identified in the uppermost part of M19n. The top of M18r and M18n magnetozones are located in the upper part of the Alpina Subzone and in the middle part of the Ferasini Subzone, respectively. The Ferasini/Elliptica subzonal boundary is located in the lowermost part of the M17r magnetozone. A little bit higher in the M17r magnetozone the FO of Nannoconus steinman nii steinmannii was identified.

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Towards a standard Tithonian to Valanginian calpionellid zonation of the Tethyan Realm

Cited by 48 publications

References 35 publications

Hybodont dentition from the Upper Jurassic of Monte Nerone Pelagic Carbonate Platform (Umbria‐Marche Apennine, Italy) and its ecological implications

Hybodont dentition from the Upper Jurassic of Monte Nerone Pelagic Carbonate Platform (Umbria‐Marche Apennine, Italy) and its ecological implications

The lower and middle Berriasian in Central Tunisia: Integrated ammonite and calpionellid biostratigraphy of the Sidi Kralif Formation

Stratigraphy, plankton communities, and magnetic proxies at the Jurassic/Cretaceous boundary in the Pieniny Klippen Belt (Western Carpathians, Slovakia)

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