|
|
|
|
|
|
CLADOSELACHE:
Cladoselache hunted in the warm seas of North America 375 million years ago and is one of the best known paleo-sharks. It is thought to have grown to around 3 feet long. It had a very weak jaw joint compared to present-day sharks, but it compensated with strong jaw-closing muscles.
This shark had a deep, forked tail and was probably a fast swimmer. Its fast swimming came in handy when it was being chased by another predator... the giant 15 foot armored fish known as Dunkleosteus.
FOSSIL EVIDENCE:
Devonian Period, Cladoselache fossil found in Ohio.
INIOPTERYX:
Iniopteryx lived in North America approximately 300 million years ago. This shark was a plump, mid-sized fish. Iniopteryx was a bottom-dweller and had specialized spines that allowed it to live on the bottom successfully.
FOSSIL EVIDENCE:
Pennsylvanian era, Iniopteryx fossil found in Indiana.
|
|
