First Discovery of Actinopterygian Teeth from the Late Triassic in Tibet
Author Information
Author(s): Fang Zichen, Cheng Long, Jiang Haishui, Wu Xianlang, Lai Xulong, Ogg James G.
Primary Institution: Hubei Key Laboratory of Paleontology and Geological Environment Evolution, Wuhan Center of China Geological Survey
Hypothesis
The study aims to report the discovery of actinopterygian teeth from the middle Norian strata in southern Tibet and infer their ecological role.
Conclusion
The discovery of actinopterygian teeth suggests the presence of large predatory fish in the Late Triassic Neo-Tethys marine ecosystem.
Supporting Evidence
- The teeth discovered are characteristic of the predatory fish Birgeria.
- The fossils indicate a middle Norian age based on associated conodonts.
- The presence of cutting edges on the teeth suggests a carnivorous diet.
- The findings fill a gap in the fossil record of actinopterygians in the Neo-Tethys.
- The study enhances understanding of marine ecosystems during the Late Triassic.
Takeaway
Scientists found some fish teeth in Tibet that show there were big fish swimming around a long time ago, helping us understand what lived in the ocean back then.
Methodology
The teeth were discovered in the Qulonggongba Formation and analyzed using Micro-CT examinations and histological sections.
Limitations
The fossil record of marine fish fauna in the Late Triassic is limited, which may affect the understanding of their distribution.
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website