This animal would have been a key point in the history of evolution, since it is one of the first quadruped vertebrates. The life of living beings in its time was completely developed in the sea. In 2002 a 350 million year old fossil named Pederpes finneyae was found. And to finish, we will comment that its tail was shaped like a fin and was used to propel itself inside the water, as if it were a fish. It is suspected that he took the big step out to land life, so to speak, because the sea was full of other dangerous predators with which to compete for food; if he was not the food itself.
Ichthystega was living during the Paleozoic era (541 to 251.902 million years ago). With respect to its habitat, it is attributed to live near rivers, lakes and swamps. Despite the large amount of fossil evidence, none of them was sufficiently complete. ", "The Ichthyostega has a mixture of amphibious and fish-like features, including webbed feet and a fin on its tail! The polydactyly and paddle-like hindlimbs of Ichthyostega suggest both that pentadactyly was not primitive for tetrapods, and that basal forms like Ichthyostega were still predominantly aquatic. The Ichthyostega has lungs as well as gills! Ichtyostega is creatable in Jurassic World: The Game as a legendary amphibian. Though undoubtedly of amphibian build and habit, it is not considered a true member of the group in the narrow sense, as the first true amphibians appeared in the Carboniferous) period. In Late Devonian vertebrate speciation, descendants of pelagic lobe-finned fish — like Eusthenopteron — exhibited a sequence of adaptations: •Panderichthys, suited to muddy shallows; •Tiktaalik with limb-like fins that could take it onto land; • Early tetrapods in weed-filled swamps, such as;  •Acanthostega, which had feet with eight digits,  •Ichthyostega with limbs. Introduction. Descendants also included pelagic lobe-finned fish such as coelacanth species. ", "Although its head resembles that of a fish, the Ichthyostega's long body and legs allow it to walk on land!

https://fossil.fandom.com/wiki/Ichthyostega?oldid=31916.

The second event was due to a somewhat unusual condition, which was that there was a decrease in oxygen on land that gradually suffocated the life forms that inhabited the unstable globe of that era. It was a labyrinthodont that represents an intermediate form between fish and amphibians. Some researchers also point out that the ichthyostega had small specialized cavities that would serve as its ears.
Jurassic World: Fallen Kingdom Survival Guide, The Science Of Jurassic Park And The Lost World Or, How To Build A Dinosaur, https://jurassicpark.fandom.com/wiki/Ichthyostega/JW:_TG?oldid=231827. [2] The orientation of the zygapophyses in the 'lumbar' region suggest that some dorsoventral motion was possible, and that lateral flexion wasn't really possible. This animal had long, sharp teeth, which showed it was a carnivore. This event killed more than 82% of marine life. In that case, they would need strong forelimbs to pull at least their anterior part out of the water, and a stronger ribcage and spine to support them while sunbathing on their abdomen like modern crocodiles. Share your thoughts, experiences and the tales behind the art. In short, places where it could swim, both to find food and to live in relative tranquility.

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