Bone Histology and Growth of the Earliest Ceratopsian Yinlong downsi
Author Information
Author(s): Han Fenglu, Zhao Qi, Hu Jinfeng, Xu Xing
Primary Institution: China University of Geosciences (Wuhan)
Hypothesis
What can the bone histology of Yinlong downsi tell us about its growth and development compared to other ceratopsians?
Conclusion
Yinlong downsi reached sexual maturity at about 6 years old, which is earlier than some ceratopsians but later than others, indicating a complex evolution of growth rates in ceratopsians.
Supporting Evidence
- Yinlong downsi is the earliest known ceratopsian recorded globally.
- The study identified four ontogenetic stages in the growth of Yinlong.
- Yinlong's growth rate is similar to that of other small-sized dinosaurs.
- The bone histology suggests a moderate growth rate for Yinlong.
Takeaway
This study looks at how the bones of a dinosaur called Yinlong grew, showing that it grew up faster than some of its relatives but slower than others.
Methodology
The study involved histological analysis of ten specimens of Yinlong downsi, examining their bone microstructure to determine growth patterns.
Limitations
The study is limited by the availability of specimens and the potential for misidentification of postcranial bones.
Digital Object Identifier (DOI)
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