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Fractal-like geometry as an evolutionary response to predation?
Robert Lemanis1, Igor Zlotnikov1
1BCUBE - Center for Molecular Bioengineering, Technische Universität Dresden, Dresden 01307, Germany.
Science Advances
|July 26, 2023
Summary
Ammonoid shells evolved complex internal structures, exhibiting fractal-like patterns. These intricate septa significantly enhanced shell stability, offering better protection and structural support.
Area of Science:
- Paleontology
- Evolutionary Biology
- Biomechanical Engineering
Background:
- Fractal-like morphologies offer mechanical advantages in engineering.
- Ammonoid shell evolution shows a trend toward increased internal complexity (septa).
- The evolutionary drivers for this complexity remain historically debated.
Purpose of the Study:
- To investigate the correlation between fractal-like septal morphology and ammonoid shell structural stability.
- To elucidate the adaptive significance of evolving septal complexity in ammonoids.
Main Methods:
- Utilized linear and nonlinear computational mechanical simulations.
- Analyzed the relationship between septal geometric complexity and shell mechanical stability.
Main Results:
- A clear positive correlation was found between fractal-like morphology and structural stability.
- Increased septal complexity significantly enhanced the overall mechanical stability of the ammonoid shell.
Conclusions:
- The evolution of complex, fractal-like septa in ammonoids was likely driven by the need for superior structural support and protection.
- Understanding this trait is crucial for comprehending ammonoid evolution, ecological dynamics, and extinction events.
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