Trilobite - Nevada.

[Tidgy's Dad]

Hello, friends! 

Not too much to go on, so I'm not expecting a definite id, really, but if anyone does have any guesses, I'd be really grateful. 

I received this as part of a gift and it was simply labelled "Trilobite - Nevada". 

The only other information the sender could tell me was that it had been found by someone else in "a canyon", not much help. 

I can tell you that the trilobite is 3 cm long (what's left of it) and is preserved in a soft, very thinly layered pale grey shale. 

It's probably going to be Lower to Middle Cambrian, maybe an olenellid? 

Any help would be most appreciated.

Thank you! 

Cheers,

Adam

@piranha

 

[piranha]

Olenellus does not have a large pygidium. 

Instead the number of thoracic / pygidial rings and large pygidium match best with a corynexochid trilobite: Ogygopsis typicalis

 

 

figures from:

 

Robison, R.A., Babcock, L.E., & Gunther, V.G. 2015
Exceptional Cambrian fossils from Utah: A window into the age of trilobites.
Utah Geological Survey Miscellaneous Publication, 15-1:1-97

[Tidgy's Dad]

Looks a pretty good match. 

Thank you very much, Scott, that's very helpful and efficient (as always) of you. 

Much appreciated.