Can you help me ID these fossils?

[Fossilicious]

I visited the Oak Springs Trilobite Area in Caliente Nevada (Lincoln County) and came across these two fossils. My phone seems to be struggling capturing all the details so I apologize in advance for the poor photos.

 

The first I believe to be some kind of marsupial? It's approximately 9 centimeters long, likely missing the tail. I'm not 100% on height as it's definitely missing part of the legs.

 

 

 

This second one I thought could be a tooth or maybe a coral, however I don't really know. The formation is rather peculiar but for all I know it could just be a rock. 

 

Front

 

Back

 

Bottom

 

Top

 

Side a

 

Side b

 

Some extra shots to give a better perspective on the shape:

 

 

[Isotelus2883]

The first may be a arthropod trace. The second is a rock. I think the rocks you were hunting in were not fossiliferous, as the trail ends some ways away.

[Ludwigia]

As far as I understand it, the stones from that site are of Paleozoic age, much too old to be finding marsupials, which first appeared in the American fossil record in the middle of the Cretaceous Period.

[Fossildude19]

Second item is not a tooth - no enamel.  No coral anatomy to be a coral.

Looks like a nodule or concretion, to me.

As previously mentioned, the area sediments are much too old to have vertebrate fossils.