Permian-Triassic boundary at El Antimonio, Sonora, Mexico
Newly discovered fossils indicate the Permian-Triassic boundary is in the lower Antimonio Formation. A brachiopod-dominated assemblage collected 40 m above the Monos-Antimonio Formations contact indicates a middle Permian (Guadalupian) age, and ammonites and conodonts found 380 to 530 m above the b...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Universidad Nacional Autónoma de México
2018-12-01
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| Series: | Revista Mexicana de Ciencias Geológicas |
| Subjects: | |
| Online Access: | https://rmcg.unam.mx/index.php/rmcg/article/view/1116 |
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| Summary: | Newly discovered fossils indicate the Permian-Triassic boundary is in the lower Antimonio Formation. A brachiopod-dominated assemblage collected 40 m above the Monos-Antimonio Formations contact indicates a middle Permian (Guadalupian) age, and ammonites and conodonts found 380 to 530 m above the base of the Antimonio Formation indicate an Early Triassic (Spathian) age… in order to continue, download the full paper in PDF.
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| ISSN: | 1026-8774 2007-2902 |