Locomotory and morphological evolution of the earliest Silurian graptolite Demirastrites selected by hydrodynamics
Gao Shijia,
Jingqiang Tan,
Wenhui Wang
Abstract:Interpretation of the locomotion of biostratigraphically important graptolite taxa is rare, and rendered problematic due to a lack of close modern analogues and soft tissues. In this study, based on well‐preserved specimens of the early Silurian low‐helical spiral Demirastrites Eisel, we reconstructed three‐dimensional Demirastrites models and simulated their locomotion using computational fluid dynamics. Hydrodynamic properties (outer‐wall pressure fields and velocity fields) were obtained and used to test th… Show more
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