Publication Date:
2021-07-21
Description:
Enamel as hardest biological tissue remains unaltered for millions of years and is therefore an excellent archive for studies on paleodiet, paleoecology, paleoclimate, paleoenvironment, biomechanical, and evolutionary studies. However, diagenetic alterations can influence such interpretations and therefore we analyzed the microstructure and composition (elemental and stable isotopic) of fossil and extant proboscidean teeth to study the extent of diagenesis in them. We report for the first time on the enamel microstructure data of the Indian elephantiformes Anancus, Stegodon, Elephas, and Palaeoloxodon besides analyzing Gomphotherium and Deinotherium from new formations. Furthermore, we compare their microstructure with those of the primitive African taxa of Moeritherium and Palaeomastodon. Our results from depth‐related elemental composition and oxygen isotope ratios of enamel phosphate and carbonate indicate no or only negligible modification. There is also a lack of age‐dependency of these minor alterations within the fossils collected from Siwaliks of the Himalayan Foreland Basin. Overall, our study indicates that diagenesis has not played any significant role on the samples studied here and are therefore well suited for chemical and paleontological studies and proxy for paleoclimate and paleoenvironment reconstruction.
Description:
Key Points:
Enamel of fossil elephants is well‐preserved from diagenesis.
Electron microscopy, X‐ray diffraction, isotope analysis and elemental analysis give the composition and ultrastructure of enamel.
Description:
Deutscher Akademischer Austauschdienst (DAAD)
http://dx.doi.org/10.13039/501100001655
Description:
Department of Science and Technology, Ministry of Science and Technology, India (DST)
http://dx.doi.org/10.13039/501100001409
Description:
Ministry of Earth Sciences (MoES)
http://dx.doi.org/10.13039/501100001851
Description:
DST, Science and Engineering Research Board (SERB)
http://dx.doi.org/10.13039/501100001843
Keywords:
560.4
;
diagenesis
;
enamel
;
microstructure
;
oxygen isotopes
;
Proboscidean
;
teeth
Type:
article
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