Fish first appeared in the Ordovician Period.
No. Trilobytes are the oldest fossils ever found. They are the reason the theory of evolution is still only a theory. They were complex organisms with all the basic organs, complex eyes and a respitory sytem. If evolution is true, why for over two centuries have no fossils been found leading up to their evolutionary "place."
Agnatha, also known as jawless fish, are the oldest vertebrate fossils with no jaws. This group includes ancient species like the ostracoderms and the agnathan fish.
Fish fossils are formed when a dead fish is buried in sediment that eventually hardens into rock. Over time, the organic material in the fish decays, leaving behind a cavity that gets filled in with minerals. These minerals create a cast of the fish's body, which becomes a fossil.
It would tell you that an ocean once existed there and then withdrew.
During the Ordovician period, important fossils likely to be found include various marine organisms such as trilobites, brachiopods, and graptolites. Additionally, early coral reefs and primitive fish fossils, like those of ostracoderms, may also be present. The diversity of life during this time reflects a significant evolutionary expansion in marine ecosystems. Fossils from this period often provide insights into early vertebrate evolution and the development of complex marine habitats.
Cambrian
No. Trilobytes are the oldest fossils ever found. They are the reason the theory of evolution is still only a theory. They were complex organisms with all the basic organs, complex eyes and a respitory sytem. If evolution is true, why for over two centuries have no fossils been found leading up to their evolutionary "place."
fish fossils and little animal fossils and also shells
fish
fish fossils and little animal fossils and also shells
Yes, hundreds of species of fish can be found in the fossil record.
Agnatha, also known as jawless fish, are the oldest vertebrate fossils with no jaws. This group includes ancient species like the ostracoderms and the agnathan fish.
Tiktaalik fossils were found in the Arctic because the region was warm and had a more temperate climate during the time when the fish lived. The movement of tectonic plates over millions of years shifted the location of the Arctic from a tropical area to a colder climate. This is why fossils of Tiktaalik, which originated in a warm marine environment, are now discovered in the Arctic region.
tuna and salmon
fish with no jaw........novanet
Fish fossils are formed when a dead fish is buried in sediment that eventually hardens into rock. Over time, the organic material in the fish decays, leaving behind a cavity that gets filled in with minerals. These minerals create a cast of the fish's body, which becomes a fossil.
In a place where there used to be a body of water