It is at the Lewis and Clark camp at 1805 AD. It is just to the right. Climb the hollow tree and grab the stone bowl from the beaver (squirrel?) in the tree. Jump at him before he pops up. Take the stone bowl to the far left side of the Great Wall of China (1593 AD).
You can't do that. All the required items are able to be grabbed.
There is no bike. What some players describe as a bike is the "early motorcar" outside Thomas Edison's house on Time Tangled Island (1877 AD). Starting it up gets you to the tree and hence the roof.
The button to start the horseless carriage on Time Tangled Island is on the rear. Push it and the car will drive across to the right. You can climb the tree to the roof, where the Sun Stone piece is in the second chimney.
Drive the motor car over to the tree by clicking on the back of it, and climb the tree to the roof of the house.
You click on the engine which drives you by the tree. Climb up the branches of the tree to the roof and on thee left chimney is thesun stone piece.
To get the Chinese bowl off the animal's head in the tree on Time Tangled Island, you need to climb the tree and jump onto the branches to reach the animal. Click on the bowl to remove it, and then carefully make your way back down the tree to proceed with the quest.
It is in the Thomas Jefferson era in the tree.
The beaver appears at 1805 AD and has the Stone Bowl for the Great Wall of China (1593 AD). He is at the top of the tall tree. Jump just before he pops out of the top and you will catch him.
Go to 1805 AD on your time machine. Next, jump to the top of the tree on which "Clark was here" has been written. When the beaver pops out of the top of the tree, click on the grey object on its head. If successful, you will receive the clay bowl.
The squirrel (probably actually a beaver) pops up out of the tree, but ducks when you try to grab him. Wait a few seconds after he goes down into the tree, then jump to catch him as he pops up again.
The stone bowl for the guard (at far left on the Great Wall of China) is at 1805 AD, in the top of a tree. When you arrive at 1805 AD (8 o'clock on the time device), climb the tree and jump at the beaver before he comes up.
The stone bowl for the sentry at the Great Wall of China is atop a tree at the Lewis and Clark camp (1805 AD, 8 o'clock on the time device). Jump at the squirrel before he comes out.