Please help identify potential fossil probably from Southern Nevada. Pelvic bone?

[maximiliano]

This specimen is about 60 pounds and 19 x 17 x 6 inches.  It has what look like tubular areas on one side, and is smooth on the other sides.  Although at first glance it may look like a rock, please see other specimens from Nevada that look similar with white mineralization, etc.  It is smooth on all sides except where broken.  It flares up and down in opposite directions on each end.  

 

Possible Suspects:

7 Dinosaurs That Lived in Nevada (And Where to See Fossils Today)

One opinion:

Looks like a chunk of Morrison dinosaur pelvis..particularly ilium. The busy side is the inner surface where the sacrum fits on, big hole for femur head. Size-wise,

Allosaurus, Stegosaurus"
Wish the photos were in color, but one looks like the same dark stone with white mineral streaks:

https://www.researchgate.net/figure/Right-lateral-view-of-pubic-foot-of-Allosaurus-AMNH-813-Ventral-view-of-pubic_fig1_268274412

 

 

[Lone Hunter]

I think the picture you looked at was deceiving as far as color,  I think you are correct that you have a black rock with mineral streaks and a geologically made hole.

[Fossildude19]

Not seeing any bone texture. Looks geologic to me, as well.

 

@jpc

[hadrosauridae]

100% not a fossil.  This looks like a metamorphic rock, probably granite, heavily fractured and infilled by quartz intrusion.  A good indicator to examine for gold or other metal deposits, but not a fossil.

[jpc]

I had to look at this on several times.  Initial reaction... all the white streaks tell me this is metamorphic.  second glance:  But it looks very iliod (I just made that word up).  But then upon closer examination, too many things amiss with it to be an ilium.  An excellent pseudofossil.  

 

For one thing, the part where the femur would fit has an extra deep hole in it, in your red circle.  Additionally, an ilium would get very thin immediately above the rim of the acetabulum (femur attachment hole).  So between the camera and the 5 6 7 of the horizontal tape measure, this thing is way too thick.