Baptiste Suchéras-Marx

Chemical characterization of Nannoconus based on synchrotron micro X-ray fluorescence Open

Rajkumar Chowdhury, Baptiste Suchéras-Marx, Luís Carlos Colocho Hurtarte, Hiram Castillo-Michel, Alejandro Fernández‐Martínez , et al. · 2025

Nannoconus, an extinct group of calcareous nannoplankton, characterized by a skeleton formed of interlocking calcite lamellae, spanned around a central canal, was a major carbonate producer in the Early Cretaceous seas (~150-120 Ma). With …

A tour in Monts d'Or and Southern Beaujolais Open

Baptiste Suchéras-Marx, Emanuela Mattioli · 2025

INASSET 2025 Fieldtrip guide

The 3D submicron-scale skeletal reconstruction of Nannoconus (Cretaceous calcareous nannofossil) – Insights on biomineralization Open

Rajkumar Chowdhury, Redhouane Boudjehem, Baptiste Suchéras-Marx, Maxime Dupraz, Anicó Kulow , et al. · 2025

Nannoconus (~5–20 μm) was a major biocarbonate producer in the Early Cretaceous seas (~150–120 Ma). The heavy calcitic skeletons (~200–1400 picogram) of this nannoplankton have contributed massive carbonate accumulations for over ~30 milli…

The underground weathering of Toarcian black shales from SE France and its paleoenvironmental, taphonomical and biogeochemical consequences Open

Guillaume Suan, Thomas Marfil, Thierry Adatte, Bruno Rousselle, Baptiste Suchéras-Marx , et al. · 2025

International audience

Impact of Dust and Temperature on Primary Productivity in Late Miocene Oceans Open

Quentin Pillot, Anta‐Clarisse Sarr, Yannick Donnadieu, Anthony Gramoullé, Baptiste Suchéras-Marx · 2025

Most of the primary productivity in the ocean comes from phytoplankton, and is impacted, among other things, by the amount of nutrients available, as well as by temperature. The Late Miocene and Pliocene were marked by global aridification…

"Bio-molecule" based calcification in Nannoconus, an extinct group of planktonic algae approximately 150 million years old Open

Rajkumar Chowdhury, Fabienne Giraud, Alejandro Fernández‐Martínez, Julio Cesar da-Silva, Anicó Kulow , et al. · 2024

Calcareous nannofossils (1-30 μm) are biomineralized calcitic remains of marine planktonic algae and are abundant in the marine sedimentary archives. Among nannofossils, the Nannoconus group was the main planktonic carbonate bio-produ…

Impact of dust and temperature on primary productivity in Late Miocene oceans Open

Quentin Pillot, Anta‐Clarisse Sarr, Yannick Donnadieu, Anthony Gramoullé, Baptiste Suchéras-Marx · 2024

Most of the primary productivity in the ocean comes from phytoplankton, and is impacted, among other things, by the amount of nutrients available, as well as by temperature. The Late Miocene and Pliocene were marked by global aridification…

New insights into the early Bajocian (Middle Jurassic) carbon cycle perturbation Open

Baptiste Suchéras-Marx, Guillaume Suan, Fabienne Giraud, Emanuela Mattioli, Hassan Khozyem , et al. · 2023

Mesozoic strata record numerous negative and positive carbon isotope excursions (CIEs). The Middle Jurassic records a negative ~0.5 ‰ CIE at the Aalenian-Bajocian boundary followed by a positive ~1.5 ‰ CIE covering the entire early Bajocia…

Impact des poussières et de la température sur l'évolution de la productivité primaire dans les océans du Miocène Open

Quentin Pillot, Yannick Donnadieu, Anta‐Clarisse Sarr, Baptiste Suchéras-Marx · 2023

International audience

A Global Reassessment of the Spatial and Temporal Expression of the Late Miocene Biogenic Bloom Open

Quentin Pillot, Baptiste Suchéras-Marx, Anta‐Clarisse Sarr, Clara T Bolton, Yannick Donnadieu · 2023

The Late Miocene Biogenic Bloom (LMBB) is a late Miocene to early Pliocene oceanographic event characterized by high accumulation rates of opal from diatoms and calcite from calcareous nannofossils and planktic foraminifera. This multi‐mil…

Using extraterrestrial 3He as a new tool to reconstruct terrigenous fluxes and their impacts on primary production and carbon burial during OAE2 in the Vocontian Basin Open

Blandine Godet, Pierre‐Henri Blard, Guillaume Suan, Baptiste Suchéras-Marx, Laurent Riquier · 2023

International audience

The Late Miocene Biogenic Bloom : A globally distributed but not an ubiquitous event Open

Quentin Pillot, Baptiste Suchéras-Marx, Anta‐Clarisse Sarr, Clara T Bolton, Yannick Donnadieu · 2022

The Late Miocene Biogenic Bloom (LMBB) is a late Miocene to early Pliocene oceanographic event characterized by high accumulation rates of opal from diatoms and calcite from calcareous nannofossils and planktic foraminifera. This multi-mil…

Ventilation Changes Drive Orbital‐Scale Deoxygenation Trends in the Late Cretaceous Ocean Open

Anta‐Clarisse Sarr, Yannick Donnadieu, Marie Laugié, Jean‐Baptiste Ladant, Baptiste Suchéras-Marx , et al. · 2022

Mechanisms that drive cyclicity in marine sediment deposits during hothouse climate periods in response to Earth's orbit variations remain debated. Orbital cycles fingerprint in the oceanographic records results from the combined effect of…

Evolution of Ocean Circulation in the North Atlantic Ocean During the Miocene: Impact of the Greenland Ice Sheet and the Eastern Tethys Seaway Open

Quentin Pillot, Yannick Donnadieu, Anta‐Clarisse Sarr, Jean‐Baptiste Ladant, Baptiste Suchéras-Marx · 2022

The Modern Ocean is characterized by the formation of deep‐water in the North Atlantic Ocean (i.e., NADW). This feature has been attributed to the modern geography, in which the Atlantic Ocean is a large basin extending from northern polar…

Evolution of ocean circulation in the North Atlantic Ocean during the Miocene: impact of the Greenland ice sheet and the eastern Tethys seaway Open

Quentin Pillot, Yannick Donnadieu, Anta‐Clarisse Sarr, Jean‐Baptiste Ladant, Baptiste Suchéras-Marx · 2022

Earth and Space Science Open Archive This preprint has been submitted to and is under consideration at Paleoceanography and Paleoclimatology. ESSOAr is a venue for early communication or feedback before peer review. Data may be preliminary…

Extraterrestrial 3He shows that Mesozoic marl-limestone alternations are mainly driven by CaCO3 variations at the astronomical timescale Open

Pierre‐Henri Blard, Baptiste Suchéras-Marx, Guillaume Suan, Taous Mezine · 2022

IntroductionMarl-limestone alternations are well known rhythmical inter-bedded deposits that commonly occur in many hemipelagic to pelagic deposits of the Phanerozoic. It is quite we…

Toarcian marine vertebrate preservation in the Grands Causses Basin (France) Open

Brahimsamba Bomou, Guillaume Suan, Ján Schlögl, Anne‐Sabine Grosjean, Baptiste Suchéras-Marx , et al. · 2022

Several episodes of strong climate change and environmental perturbation marked the Early Jurassic, and culminated during the Toarcian Oceanic Anoxic Event (T-OAE), characterised by widespread deposition of organic-rich shales. Ex…

Spatial heterogeneity of the Late Miocene Biogenic Bloom Open

Quentin Pillot, Baptiste Suchéras-Marx, Anta‐Clarisse Sarr, Clara T Bolton, Jean‐Baptiste Ladant , et al. · 2022

The late Miocene and early Pliocene is marked by a major oceanographic and geological event called the Late Miocene Biogenic Bloom (LMBB). This event …

Cyclic evolution of phytoplankton forced by changes in tropical seasonality Open

Luc Beaufort, Clara T Bolton, Anta‐Clarisse Sarr, Baptiste Suchéras-Marx, Yair Rosenthal , et al. · 2021

Evidence of high Sr/Ca in a Middle Jurassic murolith coccolith species Open

Baptiste Suchéras-Marx, Fabienne Giraud, Alexandre Simionovici, Rémi Tucoulou, I. M. Daniel · 2021

Paleoceanographical reconstructions are often based on microfossil geochemical analyses. Coccoliths are the most ancient, abundant and continuous record of pelagic photic zone calcite producer organisms. Hence, they could be valuable subst…

Coccolith size rules – what controls the size of coccoliths during coccolithogenesis? Open

Baptiste Suchéras-Marx, Sophie Viseur, Charlotte E. Walker, Luc Beaufort, Ian Probert , et al. · 2021

Coccoliths are calcite platelets produced inside coccolithophore cells and extruded to form a covering on the cell surface called a coccosphere. The size of coccoliths is an important parameter often used to identify species, and observati…

Record of the Toarcian oceanic anoxic event in the Grands Causses Basin (southern France) and its implications for vertebrate preservation Open

Brahimsamba Bomou, Guillaume Suan, Ján Schlögl, Anne‐Sabine Grosjean, Baptiste Suchéras-Marx , et al. · 2021

Paleontological excavations realized by our group in Toarcian shales (Lower Jurassic) of the Grands Causses Basin in Roqueredonde (Hérault, France), yielded several specimens of marine vertebrates. The newly discovered sp…

Technical note: A universal method for measuring the thickness of microscopic calcite crystals, based on bidirectional circular polarization Open

Luc Beaufort, Yves Gally, Baptiste Suchéras-Marx, Patrick Ferrand, Julien Duboisset · 2021

Coccoliths are major contributors to the particulate inorganic carbon in the ocean that is a key part of the carbon cycle. The coccoliths are a few micrometres in length and weigh a few picogrammes. Their birefringence characteristics in p…

Stenopterygiids from the lower Toarcian of Beaujolais and a chemostratigraphic context for ichthyosaur preservation during the Toarcian Oceanic Anoxic Event Open

Jeremy E. Martin, Guillaume Suan, Baptiste Suchéras-Marx, Louis Rulleau, Ján Schlögl , et al. · 2021

Geochemical dataset used in the present study including bulk sediment inorganic and organic carbon isotope composition (δ¹³C) and radiogenic strontium isotope (⁸⁷Sr/⁸⁶Sr) values of belemnites

Stenopterygiids from the lower Toarcian of Beaujolais and a chemostratigraphic context for ichthyosaur preservation during the Toarcian Oceanic Anoxic Event Open

Jeremy E. Martin, Guillaume Suan, Baptiste Suchéras-Marx, Louis Rulleau, Ján Schlögl , et al. · 2021

We report new ichthyosaur material excavated in lower Toarcian levels of the LafargeHolcim Val d'Azergues quarry in Beaujolais, SE France. A partially articulated skull and a smaller, unprepared but likely subcomplete skeleton preserved in…

S1:The palaeoenvironmental context of Toarcian vertebrate-yielding shales of southern France (Hérault) Open

Brahimsamba Bomou, Guillaume Suan, Ján Schlögl, Anne‐Sabine Grosjean, Baptiste Suchéras-Marx , et al. · 2021

Table providing further data

The palaeoenvironmental context of Toarcian vertebrate-yielding shales of southern France (Hérault) Open

Brahimsamba Bomou, Guillaume Suan, Ján Schlögl, Anne‐Sabine Grosjean, Baptiste Suchéras-Marx , et al. · 2021

The Early Jurassic was marked by several episodes of rapid climate change and environmental perturbation. These changes culminated during the Toarcian Oceanic Anoxic Event (T-OAE), an episode of global warming that led to the widespread de…

Stenopterygiids from the lower Toarcian of Beaujolais and a chemostratigraphic context for ichthyosaur preservation during the Toarcian Oceanic Anoxic Event Open

Jeremy E. Martin, Guillaume Suan, Baptiste Suchéras-Marx, Louis Rulleau, Ján Schlögl , et al. · 2021

We report new ichthyosaur material excavated in lower Toarcian levels of the LafargeHolcim Val d'Azergues quarry in Beaujolais, SE France. A partially articulated skull and a smaller, unprepared but likely subcomplete skeleton preserved in…

Cyclic evolution of phytoplankton forced by changes in tropical seasonality Open

Luc Beaufort, Clara T Bolton, Anta‐Clarisse Sarr, Baptiste Suchéras-Marx, Yair Rosenthal , et al. · 2020

New results and challenges in Sr/Ca studies on Jurassic coccolithophorids Open

Baptiste Suchéras-Marx, Fabienne Giraud, Alexandre Simionovici, Rémi Tucoulou, I. M. Daniel · 2020

A recommendation of: Suchéras-Marx B, Giraud F, Simionovici A, Tucoulou R, and Daniel I (2020). Evidence of high Sr/Ca in a Middle Jurassic murolith coccolith species. PaleorXiv, dcfuq, version 7, peer-reviewed by PCI Pale…

Baptiste Suchéras-Marx YOU? Author Swipe