A remarkable fossil discovery in modern-day Germany has provided a unique glimpse into the soft-tissue anatomy of plesiosaurs, long-necked marine reptiles thought to be mostly skeletal remnants. The exceptionally preserved specimen of Plesiopterys wildi, known as MH 7, offers significant insights into the biomechanics and evolutionary development of these ancient predators.
The fossil, found in 1940 but only prepared in 2020, includes patches of skin, scales, and even keratin, revolutionizing our understanding of plesiosaur evolution. Microscopic analysis revealed two types of keratin: beta-keratin on the scaly flippers and alpha-keratin on the smoother tail skin, suggesting functional differences across the body surface.
The discovery suggests that Plesiopterys wildi had visual camouflage or social signaling traits, contradicting the long-standing assumption that marine reptiles were monochrome. The flippers’ structure also implies a high degree of maneuverability and agility, with scales and keratin lining them for precise propulsion.
Furthermore, the fossilized evidence of a fleshy tail fin adds another dimension to our understanding of Plesiopterys wildi. This flexible structure likely acted as a rudder or auxiliary propulsor, allowing the animal to make sharp turns or achieve bursts of speed. This new insight reveals that plesiosaurs may have employed a niche strategy, relying on agility and subtle control rather than raw power.
The study highlights the significance of this discovery, providing a refined understanding of Plesiopterys wildi’s place in plesiosaur evolution and suggesting parallel evolution among geographically isolated groups. The findings cast new light on the adaptability and evolutionary strategies of these enigmatic creatures.
Source: https://indiandefencereview.com/183-million-year-fossil-intact-skin-scales