Anyone familiar with Bear Mountain, New Mexico?

[Myrmica]

Is anyone familiar with the Paleozoic formations on Bear Mountain, just northwest of Silver City, New Mexico?  I have collected there a couple of times but am unsure as to which formation I was sampling. My first guess is that it is the Andrecito Member of the Lake Valley Limestone (Mississippian (Early Osage) but I know that there are also fossils found in the underlying Devonian Percha Shale, especially east of Silver City.  There are a variety of brachiopods, bryozoans, rugose corals, and some crinoid bits.  The photos show one of the larger brachiopods.  Do you recognize it?  Thanks.

 

[Fossildude19]

Looks like maybe an  Atrypid?  Atrypa or Pseudatrypa? 

[FossilDAWG]

I will have to find the reference, but this is one of the Devonian species from the Percha Shale.  I have collected it from Bear Mountain back in the early 1990s.  The Lake Valley Formation is exposed above the Percha but the brachiopods are fairly different.  I collected a couple of whole crinoids (stem, calyx, arms) from the Lake Valley in that area.

 

Don

[Myrmica]

Thanks Tim and Don.  This will help me to identify some of the other species that I found there.  Any ref's would be most appreciated.  Don, was the one that you were thinking of Stainbrook (1947)?  The next time that we are in that part of the world, I will definitely head over to the Lake Valley too; living in the Pacific northwest, there are few opportunities for finding a complete crinoid.

[Oxytropidoceras]

Geologic map that contains Bear Mountain.

 

Hildebrand, R.S., Ferguson, C.A. and Skotnicki, S., 2008. 

Preliminary geologic map of the Silver City quadrangle. 

grant County, New Mexico. Open-file geologic map 164

 

Pamphlet / Report - Researchgate

 

Open-file Geologic Map - 164 Geologic map of the Silver

City 7.5-minute quadrangle map, Grant County, New Mexico

 

PDF file of geologic map

 

More PDFs of papers by Dr. Robert Hildebrand

 

More PDFs of papers by Steve Skotnicki

 

Yours,

 

Paul H.

[Crusty_Crab]

Possibly an Orthid of the genus Schizophoria? For reference, this is Schizophoria iowensis (Hall, 1858) from the Late Devonian Lime Creek Formation of Iowa that I have:

Edited April 10, 2021 by Crusty_Crab
Misspelled iowensis

[Myrmica]

Thanks all for the excellent info!