Water is pretty much the same in all times and places. Jurassic water would have been somewhat purer than today's, thanks to human pollution, but not significantly better than water in North America before Columbus. As for microbes and plant matter, those would have been slightly different, but the impact would be much the same: i.e., those animals that lived locally would have been adapted to them, those that had recently moved in would have have the reptilian equivalent of Montezuma's Revenge.
As for the fish, there are a couple of possibilities. One is that since there was more oxygen in the air, there might have been more dissolved in the water as well. However, water has a finite carrying capacity for atmospheric gases. Also, since the planet as a whole was warmer, the water might have had LESS oxygen than it does today.
in the Jurassic period the atmosphere was about 14.7. in the Jurassic period the atmosphere was about 14.7.
Warmer climate
it was the same but there was a groped land
Marine creatures like sharks existed in the Jurassic. Marine reptiles like icthyosaurs, plesiosaurs, and thalattosuchians also existed. Thalattosuchians are fully marine reptiles.
During the Jurassic period, precipitation levels varied by region. In general, there were wetter conditions in high latitudes and arid conditions in some continental interiors. The overall climate was warmer and more humid than today.
The biggest dinosaur in the Jurassic period were the gigantic sauropods like the famous Diplodocus.
During the Jurassic period, Earth's climate was generally warmer and more humid than today. Polar regions were ice-free, and forests covered much of the land. Dinosaurs flourished in this lush environment.
Like all dinosaurs, Stegosaurus lived in the Mesozoic era. It lived 150 million years ago. That was during the Jurassic period, the second period of the Mesozoic.
No, Stegosaurus was a herbivorous dinosaur. It primarily fed on plants like ferns, cycads, and conifers during the Late Jurassic period.
flat and even
There was a minor extinction event at the end of the Jurassic period. It was probably caused by global climate change. Dinosaurs like Allosaurus, Ceratosaurus, Camarasaurus, and Stegosaurus couldn't adapt to the change in temperature, so they all died out. The Cretaceous period then came after the Jurassic period had ended.
well when i was there ,it was a litt;le bit hot