Marco Viaretti

ORCID: 0000-0003-1539-8157
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About
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Research Areas
  • Paleontology and Stratigraphy of Fossils
  • Geological and Geochemical Analysis
  • Subterranean biodiversity and taxonomy
  • Venomous Animal Envenomation and Studies
  • Geochemistry and Elemental Analysis
  • Turtle Biology and Conservation
  • Paleontology and Evolutionary Biology
  • Geochemistry and Geologic Mapping
  • Geology and Paleoclimatology Research
  • Evolution and Paleontology Studies
  • Methane Hydrates and Related Phenomena
  • Hydrocarbon exploration and reservoir analysis
  • Marine Biology and Ecology Research
  • Atmospheric and Environmental Gas Dynamics

University of Milan
2020-2025

Atmospheric CO2 is thought to play a fundamental role in Earth’s climate regulation. Yet, for much of deep geological past, atmospheric has been poorly constrained, hindering our understanding transitions between cool and warm climates. Beginning ~370 million years ago the Late Devonian ending ~260 Permian, Palaeozoic Ice Age was last major glaciation preceding current Cenozoic possibly most intense witnessed by complex lifeforms. From onset main phase mid-Mississippian ~330 ago,...

10.5194/egusphere-egu25-16102 preprint EN 2025-03-15

The late Sakmarian (Early Permian) is a key time-interval to unravel deep time climate changes at the transition from icehouse greenhouse conditions. Very recent data (Jurikova et al., 2025) showed that demise of Late Palaeozoic Ice Age (LPIA) was caused by an increase in atmospheric CO2 linked volcanic activity, peaking Sakmarian. To understand how this impacted seasonal scale and it affected marine ecosystems, we performed sclerochemical analysis on carefully screened shell brachiopod...

10.5194/egusphere-egu25-17778 preprint EN 2025-03-15

Abstract Brachiopods have been employed for environmental and climatic reconstructions in the near geological past. Traditionally, one datapoint is obtained per shell, providing time‐averaged bulk signals. However, brachiopods also potential to provide time‐resolved information on (sub)annual timescales, but this has understudied due difficulties accounting brachiopod shell growth. We investigated distribution of δ 18 O, 13 C Element/Ca along growth profiles three Recent terebratulides from...

10.1002/lol2.70004 article EN cc-by Limnology and Oceanography Letters 2025-04-15

Abstract The first Mesozoic scorpion from Italy, Protobuthus ziliolii sp. nov., is here described and named thanks to a single specimen. This new species comes the Besano Formation (Middle Triassic) of Monte San Giorgio, UNESCO World Heritage Locality (WHL). Taphonomical analysis allows interpretation specimen as full-body fossil, rather than an exuvia. Different analytical techniques, such optical, UV, SEM microscopy, reveal different characters, not visible together with method. assigned...

10.1007/s12542-023-00659-5 article EN cc-by PalZ 2023-07-14

Permian brachiopods from Oman are well-known as valuable tools for correlation and palaeobiogeographical palaeoclimatic reconstructions. Here, we describe a new brachiopod fauna the Qarari Unit of allochthonous Batain Group in northeast Oman. Brachiopods were collected four localities: Wadi Khawr al Jaramah (WKJ), Jebel (JQ1), X (JX3) Shiya (SH11). The age fossiliferous localities is wellconstrained to late Kungurian-early Roadian by conodonts fusulines, agreement with suggested ranges.The...

10.54103/2039-4942/17732 article EN cc-by-sa RIVISTA ITALIANA DI PALEONTOLOGIA E STRATIGRAFIA 2022-10-19

The Late Permian was a time interval characterized by extreme environmental perturbations, culminating with the Siberian Traps-related gas emissions and subsequent global warming ocean acidification, which produced most severe mass extinction of Phanerozoic (Dal Corso et al., 2022). Evidence these perturbations are recorded in fossil archives, as pristine brachiopod shells (Garbelli 2017). Here, we show shell microstructural variations stable isotopes profiles specimens Araxilevis...

10.5194/egusphere-egu23-4839 preprint EN 2023-02-22
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