I am guessing these first two are of maybe some sort of plant. It reminds me of a Sphenophyllum from the Pennsylvanian Period in the United States.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhCOMAX2olHq43bGhxOHGIp2oH0sn6xzx7kx-UnBWhPoLyZLTzBUvQxWxMJAFQ0U6Y6s2e61qmMokb5-7hrcgm3Gcvj4HEOnZg_ahFuGqs3h_f1YXoTX1aR5f8im4189L3BRnDYySccXVPb/s400/australian-plant2.jpg)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjb59wZd3nbF31QfrRrlCnMgM8QhBnCcrw5pf5H9qVTcLwjgFmfCx9XPgQN-zk9yz2hzOCBxJVx56NDtqV8Orix_0YHUfOEbTKrrJ4BgWrPOD1nsEoxBxA0_MP5MR6AN0b3one0JXOfkZay/s400/australian-plant.jpg)
I am not sure what kind of fossil this is. It does not look like anything I find in my area. [UPDATE: I have been reading a booklet called Fossil Beds of the Falls of the Ohio from the Kentucky Geological Survey, 1993. On page 18 figure c, they have an image of a coral head that is in a shape similar to this fossil. It is described as "Ham-hock-shaped Favosites in bedrock in the wash area". The ones in these pictures look pretty worn but the large area was probably a lot of small corallites fanning radially out.