An Ammonite Preserved in the Upper Pliocene Lower Tejo River Deposits of Quinta Do Conde (Southwest Portugal)
Abstract
:1. Introduction
2. Geological Setting
3. Material and Methods
4. Description of the Fossil
5. Discussion About the Origin and Formation of the Ammonite Cast
5.1. Possible Mesozoic Formations from Where the Ammonite May Have Come from
5.2. How the Ammonite Cast May Have Been Formed
6. Conclusions
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Name | S | +/- | Al | +/- | Si | +/- | Fe | +/- | K | +/- | Ca | +/- | Sr | +/- | Fe2O3 | SiO2 | P2O5 | Al2O3 | CaO |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Nodule_1 | 0 | 0 | 17.8346 | 0.0608 | 26.1486 | 0.0045 | 0.743 | 0.007 | 0 | 0 | 0.1186 | 0.0013 | 0 | 0 | 1.0626 | 55.9319 | 0.1592 | 33.6895 | 0.166 |
Nodule_2 | 0 | 0 | 17.266 | 0.0636 | 26.6677 | 0.0048 | 0.8939 | 0.0081 | 0 | 0 | 0.1228 | 0.0014 | 0 | 0 | 1.2783 | 57.0423 | 0.1447 | 32.6156 | 0.1718 |
Ammonite_1 | 36.7252 | 0.0244 | 0.1656 | 0.0274 | 0.7792 | 0 | 0.1866 | 0.0058 | 0 | 0 | 36.9837 | 0.0232 | 0.1083 | 0.0008 | 0.2668 | 1.6668 | 0 | 0.3128 | 51.7402 |
Ammonite_2 | 37.0899 | 0.0245 | 0.1171 | 0.0281 | 0.6126 | 0 | 0.2059 | 0.0062 | 0 | 0 | 37.4641 | 0.0235 | 0.1426 | 0.0009 | 0.2944 | 1.3104 | 0 | 0.2212 | 52.4123 |
MF_1 | 2.5633 | 0.0074 | 3.6851 | 0.0312 | 29.8655 | 0.0359 | 10.8191 | 0.025 | 1.5871 | 0.0042 | 1.0264 | 0.0029 | 0.0037 | 0.0002 | 15.4714 | 63.8822 | 0.0331 | 6.9611 | 1.4359 |
MF_2 | 3.394 | 0.0074 | 1.6783 | 0.0229 | 24.8346 | 0.03 | 16.1569 | 0.0285 | 0.5919 | 0.0027 | 1.5142 | 0.0032 | 0.0039 | 0.0002 | 23.1043 | 53.1212 | 0.1161 | 3.1704 | 2.1183 |
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Neto de Carvalho, C.; Barroso, M.; Soares, S. An Ammonite Preserved in the Upper Pliocene Lower Tejo River Deposits of Quinta Do Conde (Southwest Portugal). Foss. Stud. 2025, 3, 8. https://doi.org/10.3390/fossils3020008
Neto de Carvalho C, Barroso M, Soares S. An Ammonite Preserved in the Upper Pliocene Lower Tejo River Deposits of Quinta Do Conde (Southwest Portugal). Fossil Studies. 2025; 3(2):8. https://doi.org/10.3390/fossils3020008
Chicago/Turabian StyleNeto de Carvalho, Carlos, Miguel Barroso, and Sofia Soares. 2025. "An Ammonite Preserved in the Upper Pliocene Lower Tejo River Deposits of Quinta Do Conde (Southwest Portugal)" Fossil Studies 3, no. 2: 8. https://doi.org/10.3390/fossils3020008
APA StyleNeto de Carvalho, C., Barroso, M., & Soares, S. (2025). An Ammonite Preserved in the Upper Pliocene Lower Tejo River Deposits of Quinta Do Conde (Southwest Portugal). Fossil Studies, 3(2), 8. https://doi.org/10.3390/fossils3020008