Search Results for: Sharks
. more modern teleost fish begin to appear. ammonoidea , belemnites , rudist bivalves , echinoids and sponges all common. many new types of dinosaurs (e.g. tyrannosaurs , titanosaurs , hadrosaurs , and ceratopsids ) evolve on land, as do eusuchia ( modern crocodilians ); and mosasaurs and modern sharks
late mississippian periods. ± kasimovian ± moscovian ± bashkirian ± * mississippian serpukhovian large primitive trees , first land vertebrates , and amphibious sea-scorpions live amid coal -forming coastal swamps . lobe-finned rhizodonts are dominant big fresh-water predators. in the oceans, early sharks...
https://en.wikipedia.org/wiki/Geologic_time_scale