Exploring the paleoceanographic changes registered by planktonic foraminifera across the Cenomanian-Turonian boundary interval and Oceanic Anoxic Event 2 at southern high latitudes in the Mentelle Basin (SE Indian Ocean)

Petrizzo, Maria Rose; Watkins, David; MacLeod, Kenneth G.; Hasegawa, Takashi; Huber, Brian T.; Batenburg, Sietske J.; Kato, Tomonori

doi:10.1016/j.gloplacha.2021.103595

Cited by 22 publications

(53 citation statements)

References 166 publications

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“…These observations together with the paleotemperature values inferred from δ 18 O foraminiferal data, might indicate a reduced vertical temperature gradient between mixed layer and thermocline waters. The occurrence of common microhedbergellids (Figure 4), interpreted as opportunistic species because of their small size and high reproductive potential, further suggests a paleoceanographic regime affected by episodes of enhanced eutrophy, in agreement with data from across the Cenomanian-Turonian boundary interval at Site U1516 which is located only few kilometers distant from Site U1513 (Figure 1b; Petrizzo et al, 2021).…”

Section: Planktonic Foraminiferal Patternssupporting

confidence: 83%

“…Applying this model, we propose that W. brittonensis and D. hagni in the Turonian interval (Figure 10b; Table 2) were summer mixed-layer dwellers as interpreted for nearby Site U1516 in the Mentelle Basin (Petrizzo et al, 2020(Petrizzo et al, , 2021. These taxa exhibit relatively high variability in δ Huber et al, 1995Huber et al, , 2018Petrizzo et al, 2020;Figure 1a).…”

Section: Turonianmentioning

confidence: 91%

“…The planktonic foraminiferal biozonation for southern mid-to high latitudes by Petrizzo et al (2020) is applied and correlated with calcareous nannofossil CC zones of Perch-Nielsen (1985) to provide an integrated calcareous plankton biozonation scheme at about 60°S paleolatitude. Lowest and highest occurrences of calcareous plankton events, including those that mark zonal boundaries, are shown in Table 1 and Figure 2. The lowest occurrence (LO) of Quadrum gartneri at 227.80 m CCSF defines the base of Zone CC11 and is a consistently reliable datum for approximating the base of the Turonian Stage as it occurs slightly above the stage criterion in the Global Stratotype Section and Point (GSSP) type section (Kennedy et al, 2000(Kennedy et al, , 2005 and in many other localities worldwide (e.g., Dickson et al, 2017;Gale et al, 2020Gale et al, , 2019Gradstein et al, 2012;Linnert et al, 2011Linnert et al, , 2010Petrizzo et al, 2021;Tsikos et al, 2004;von Salis, 1998). Nannofossil assemblages in the interval below are assigned to Zone CC10b, yield Eprolithus moratus at 236.65 m CCSF and are cosmopolitan in nature with only very rare specimens of species considered to be high latitude taxa.…”

Section: Calcareous Plankton Bioevents and Integrated Biostratigraphymentioning

confidence: 99%

“…The lowest occurrence (LO) of Quadrum gartneri at 227.80 m CCSF defines the base of Zone CC11 and is a consistently reliable datum for approximating the base of the Turonian Stage as it occurs slightly above the stage criterion in the Global Stratotype Section and Point (GSSP) type section (Kennedy et al., 2000 , 2005 ) and in many other localities worldwide (e.g., Corbett et al., 2014 ; Dickson et al., 2017 ; Gale et al., 2020 , 2019 ; Gradstein et al., 2012 ; Linnert et al., 2011 , 2010 ; Petrizzo et al., 2021 ; Tsikos et al., 2004 ; von Salis, 1998 ). Nannofossil assemblages in the interval below are assigned to Zone CC10b, yield Eprolithus moratus at 236.65 m CCSF and are cosmopolitan in nature with only very rare specimens of species considered to be high latitude taxa.…”

Section: Calcareous Plankton Bioevents and Integrated Biostratigraphymentioning

confidence: 99%

“…The planktonic foraminifera Rotalipora cushmani and Helvetoglobotruncana helvetica whose highest occurrence (HO) and LO, respectively, are used to constrain and approximate the position of the Cenomanian/Turonian boundary at low to mid‐latitudes (e.g., Caron et al., 2006 ; Desmares et al., 2007 ; Elderbak & Leckie, 2016 ; Eldrett et al., 2015 ; Falzoni et al., 2018 , 2016 ; Falzoni & Petrizzo, 2020 ; Gradstein et al., 2012 ; Keller et al., 2001 ; Kennedy et al., 2005 , 2000 ; Paul et al., 1999 ). These species are absent from the Mentelle Basin sediments both at Site U1513 and nearby Site U1516 (Petrizzo et al., 2021 ). The planktonic foraminifera assemblages from the base of the studied stratigraphic interval (U1513A‐43X and U1513D‐17R) to the LO of Falsotruncana maslakovae at 193.62 m CCSF are characterized by low diversity and are dominated by whiteinellids ( Whiteinella baltica and Whiteinella brittonensis ), muricohedbergellids, and a few keeled species of Marginotruncana and Dicarinella .…”

Section: Calcareous Plankton Bioevents and Integrated Biostratigraphymentioning

confidence: 99%

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Late Cretaceous Paleoceanographic Evolution and the Onset of Cooling in the Santonian at Southern High Latitudes (IODP Site U1513, SE Indian Ocean)

Petrizzo

MacLeod

Watkins

et al. 2022

Paleoceanog and Paleoclimatol

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The latest Cenomanian to Santonian sedimentary record recovered at IODP Expedition 369 Site U1513 in the Mentelle Basin (SE Indian Ocean, paleolatitude 60°S at 85 Ma) is studied to interpret the paleoceanographic evolution in the Southern Hemisphere. The planktonic foraminiferal assemblage changes, the depth ecology preferences of different species, and the surface and seafloor temperature inferred from the stable isotopic values measured on foraminiferal tests provide meaningful information to the understanding of the Late Cretaceous climate. The hothouse climate during the Turonian‐Santonian, characterized by weak latitudinal temperature gradients and high atmospheric CO2 concentrations, is followed by a progressive cooling during the Campanian. At Site U1513 the beginning of this climatic transition is nicely recorded within the Santonian, as indicated by an ∼1‰ increase in δ18O values of planktonic foraminifera suggesting a decline in surface water paleotemperatures of 4°C. The onset of cooling is mirrored by changes in the planktonic foraminiferal assemblages including extinctions among surface and deep dwellers, appearances and diversification of newly evolving taxa, and changes from predominantly epifaunal oxic to infaunal dysoxic/suboxic taxa among co‐occurring benthic foraminifera. Overall, the data presented here document an interval in the Santonian during which the rate of southern high latitude cooling increased. Both surface and bottom waters were affected, although the cooling signal is more evident in the data for surface waters. This pattern of cooling ascribes the deterioration of the Late Cretaceous climate to decreased CO2 in the atmosphere and changes in the oceanic circulation correlated with enhanced meridional circulation.

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Section: Planktonic Foraminiferal Patternssupporting

confidence: 83%

Section: Turonianmentioning

confidence: 91%

Section: Calcareous Plankton Bioevents and Integrated Biostratigraphymentioning

confidence: 99%

Section: Calcareous Plankton Bioevents and Integrated Biostratigraphymentioning

confidence: 99%

Section: Calcareous Plankton Bioevents and Integrated Biostratigraphymentioning

confidence: 99%

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Late Cretaceous Paleoceanographic Evolution and the Onset of Cooling in the Santonian at Southern High Latitudes (IODP Site U1513, SE Indian Ocean)

Petrizzo

MacLeod

Watkins

et al. 2022

Paleoceanog and Paleoclimatol

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Elemgasem nubilus: a new brachyrostran abelisaurid (Theropoda, Ceratosauria) from the Portezuelo Formation (Upper Cretaceous) of Patagonia, Argentina

Baiano

Pol

Bellardini

et al. 2022

Papers in Palaeontology

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Abelisaurids are medium-large-sized theropod dinosaurs that were predominant in the carnivorous fauna during the Late Cretaceous of Gondwana. These predators are abundant in the Cretaceous fossil strata of Patagonia, which yield the best record for this group. In the Late Cretaceous, abelisaurids appear in almost all regions of Gondwana and in all stages, except for the Coniacian, in which they are globally unknown. Here we describe a new abelisaurid, Elemgasem nubilus gen. et sp. nov., from the Portezuelo Formation (Turonian-Coniacian), Patagonia, Argentina. The palaeohistology of the appendicular bones of Elemgasem shows that the holotype was a subadult individual, but had achieved sexual maturity. This taxon is based on several axial and appendicular elements, and is diagnosed by the presence of a marked pattern of rugosity on the lateral surface of the fibula and a dorsoventrally deep lateral wall of the calcaneum. Moreover, the posterior caudal vertebrae have a morphology slightly different from any other abelisaurid. Elemgasem nubilus is recovered as an unstable taxon within Brachyrostra, given that it was recovered as sister taxon of Furileusauria or in several positions within this clade. Despite the problematic phylogenetic relationships of Elemgasem nubilus, it is important because it is the first abelisaurid from the Turonian-Coniacian interval and it increases the diversity of this theropod family at a time of marked turnover in the tetrapod fauna of South America, global climate change, and mass extinction events recorded worldwide in the marine realm.

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Cretaceous southern high latitude benthic foraminiferal assemblages during OAE 2 at IODP Site U1516, Mentelle Basin, Indian Ocean

Wolfgring

Amaglio

Petrizzo

2023

Cretaceous Research

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Exploring the paleoceanographic changes registered by planktonic foraminifera across the Cenomanian-Turonian boundary interval and Oceanic Anoxic Event 2 at southern high latitudes in the Mentelle Basin (SE Indian Ocean)

Cited by 22 publications

References 166 publications

Late Cretaceous Paleoceanographic Evolution and the Onset of Cooling in the Santonian at Southern High Latitudes (IODP Site U1513, SE Indian Ocean)

Late Cretaceous Paleoceanographic Evolution and the Onset of Cooling in the Santonian at Southern High Latitudes (IODP Site U1513, SE Indian Ocean)

Elemgasem nubilus: a new brachyrostran abelisaurid (Theropoda, Ceratosauria) from the Portezuelo Formation (Upper Cretaceous) of Patagonia, Argentina

Cretaceous southern high latitude benthic foraminiferal assemblages during OAE 2 at IODP Site U1516, Mentelle Basin, Indian Ocean

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