The University of Pennsylvania studies the ancient species of fish, Tanyrhinichthys mcallisteri. With its appearance, it resembles a modern sturgeon. It had the same way of life as the sturgeon, although previously it was believed that its features are close to the pike. Nevertheless, the scientists consider the ancient fish as mysterious and strange. It lived almost 300 million years ago in the territory of modern New Mexico.
This species of ancient fish has a huge number of characteristics similar to sturgeon, up to the body structure. The scientist noted a common protruding nose and other anatomical features.
But at the same time, it is surprising that these two species - ancient fish and modern sturgeon, have completely different evolutionary development paths that do not intersect in any way. The scientists have found a reason why these similar individuals do not belong to the same species. According to them, ancient fish during their evolutionary development adapted to changing environmental conditions.
It was these changes that contributed to the development of external features common to modern sturgeon, that contributed to survival. It was previously believed that the ancient species is more similar to a pike. But this fact has been questioned.
Both the sturgeon and the species Tanyrhinichthys mcallisteri have completely different evolutionary paths. Despite external similar data, they do not belong to the same species and do not have common ancestors. The researchers believe that previously sturgeon was considered one of the most primitive species.
But in fact, they had a difficult path of development, being in certain conditions of adaptation to the external environment. According to the researchers, the ancient species indicates possible options in finding solutions to environmental problems.
The fish lived in complex ecological territories that were on the verge of serious environmental problems. More often, they came down to the climate change, to which the inhabitants of water resources were forced to adjust.