When where bear trap invented?

What does paleo means? What extinct mega toothed shark lived in prehistoric times? Which african countries dont have fossil fuels? Where is petroleum found in Kansas? What giant did Odin slay? What predators ate the eohippus? In greek mythology Who is the fire-breathing beast with a lions head? Are morganucodon carniorous? Why did Crazy Horse not let people take pictures of him? What is name of Norse gods which included Njord and Freya? What did the scylla eat? Did queen pasiphae have a strange interest in bulls? Who are poseidens brothers? What did the stone age people grow? Where in the UK is oil found? What equipment did john Forrest take? What revolution was characterized by a shift from human and animal power to fossil fuels? Where to get the flute that puts the three headed dog to sleep on mythology island? What tools did exploers use? Why were goats and sheep domesticated the Stone Age?