Grand Canyon National Park GRCA Fossil SPIRIFER SP. HOR: SUPAI FORMATION, THREE FOOT LEDGE OF CRYSTALLINE LIMESTONE, 80 FEET ABOVE BASE OF FORMATION. 105 X 65 X 20 MM. OLD CAT. NO. FS-63. NPS

---

Size: 1709px × 1170px
Photo credit: © Natural History Archive / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: america, american, arizona, articulata, canyon, cl, coconino, conservation, country, county, fossil, geology, grand, history, land, lands, mohave, national, natural, nature, np, park, parks, preserve, public, service, sp, spirifer, spiriferidae, usa, widlife, wilderness