Crinoid Stem on matrix

[Las Vegas Bob]

 

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[old digger]

Nice specimen!

 

[Inyo]

Deleted by author.

 

[Las Vegas Bob]

If that was found in the Las Vegas area, I would say that it very much resembles large crinoids locally common in either the Mississippia Monte Cristo Limestone, or the upper Mississpian through early Permian Bird Spring Formation--although both geologic rock formations also occur on the eastern Mojave Desert, California, as well, one must observe.

Here are some crinoid ossicles I observed in the lower Mississippian Tin Mountain Limestone in Death Valley National Park several years ago:
Lower Mississippian Crinoid Ossicles

Very nice information thank you. Actually I collected this specimen from a road cut in Ohio when they were building a turnpike.

 

[Las Vegas Bob]

Nice specimen!

Thank you.