Iguanodon bernissartensis teeth and bones isotope and chemical analysis
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Ben Creisler
Oct 31, 2025, 12:29:04 AM (7 days ago) Oct 31
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Ben Creisler
A new paper:
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Sophie Decrée, Thierry Leduc, Pascal Godefroit, Etienne Deloule, Nolwenn Coint, Magdalena H. Huyskens, Eduardo T. Mansur, Vinciane Debaille & Jean-Marc Baele (2025)
Analysis of Iguanodon bernissartensis teeth and bones using in-situ trace element, oxygen and Sr analyses: Implication for paleoecology, paleoenvironment and diagenesis
Palaeogeography, Palaeoclimatology, Palaeoecology 113371
doi: https://doi.org/10.1016/j.palaeo.2025.113371
https://www.sciencedirect.com/science/article/abs/pii/S003101822500656X
Highlights
This study focuses on the Lower Cetaceous Iguanodon bernissartensis.
Isotope (Sr and O) and geochemical (REE) analyses have been performed on bones and teeth.
The in-vivo Sr and O isotope signatures suggest that Iguanodon bernissartensis was a non-migratory species.
The O isotope data further indicate that the seasonality was well marked at the time.
The data emphasize the role played by the brines (issued from deep-seated evaporites) during the diagenesis.
Abstract
Rare earth element (REE) content and Sr and O isotope composition of bones and teeth are widely used as proxies for palaeoecology, palaeoenvironments and taphonomy. However, the interpretation of these data is often hindered by the complexity of diagenetic processes and history. In this paper, we use in-situ analyses (trace elements and Sr isotopes using laser ablation inductively coupled plasma mass spectrometry (LA-ICPMS) and secondary ion mass spectrometry, SIMS) to investigate Lower Cretaceous (Late Barremian-Early Aptian) teeth and bones of Iguanodon bernissartensis to decipher the diagenetic processes, and to provide information about paleoenvironment and the non-migratory behaviour of iguanodons. Combined REE and isotope geochemistry highlights the importance of Fe-Mn oxyhydroxides in the uptake and release of REE by bones, and the change of diagenetic fluids over time. They also emphasize the role played by brines issued from the dissolution of deep-seated Visean evaporites, which brought considerable amount of S into the sinkhole lake where the iguanodons suddenly died in large numbers. Biological Sr and O isotope signatures obtained on the teeth suggest that Iguanodon bernissartensis was a non-migratory species, living and grazing in a restricted palaeogeographic area. O isotope data further indicates that the seasonality was marked, with cool/wet winters and warm to hot and dry summer.
Analysis of Iguanodon bernissartensis teeth and bones using in-situ trace element, oxygen and Sr analyses: Implication for paleoecology, paleoenvironment and diagenesis
Palaeogeography, Palaeoclimatology, Palaeoecology 113371
doi: https://doi.org/10.1016/j.palaeo.2025.113371
https://www.sciencedirect.com/science/article/abs/pii/S003101822500656X
Highlights
This study focuses on the Lower Cetaceous Iguanodon bernissartensis.
Isotope (Sr and O) and geochemical (REE) analyses have been performed on bones and teeth.
The in-vivo Sr and O isotope signatures suggest that Iguanodon bernissartensis was a non-migratory species.
The O isotope data further indicate that the seasonality was well marked at the time.
The data emphasize the role played by the brines (issued from deep-seated evaporites) during the diagenesis.
Abstract
Rare earth element (REE) content and Sr and O isotope composition of bones and teeth are widely used as proxies for palaeoecology, palaeoenvironments and taphonomy. However, the interpretation of these data is often hindered by the complexity of diagenetic processes and history. In this paper, we use in-situ analyses (trace elements and Sr isotopes using laser ablation inductively coupled plasma mass spectrometry (LA-ICPMS) and secondary ion mass spectrometry, SIMS) to investigate Lower Cretaceous (Late Barremian-Early Aptian) teeth and bones of Iguanodon bernissartensis to decipher the diagenetic processes, and to provide information about paleoenvironment and the non-migratory behaviour of iguanodons. Combined REE and isotope geochemistry highlights the importance of Fe-Mn oxyhydroxides in the uptake and release of REE by bones, and the change of diagenetic fluids over time. They also emphasize the role played by brines issued from the dissolution of deep-seated Visean evaporites, which brought considerable amount of S into the sinkhole lake where the iguanodons suddenly died in large numbers. Biological Sr and O isotope signatures obtained on the teeth suggest that Iguanodon bernissartensis was a non-migratory species, living and grazing in a restricted palaeogeographic area. O isotope data further indicates that the seasonality was marked, with cool/wet winters and warm to hot and dry summer.
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