Brachiopods in Cienega Canyon

Brachiopods (Neospirfer) in limestone from the Bursum Formation near Cibola Spring on the Sevilleta National Wildlife Refuge. The Bursum formation here records the transition from a marine to a terrestrial depositional environment.

For more information, see:

Allen, B.D., Love, D.W., and McCraw, D.J., 2013, Uppermost Pennsylvanian Bursum Formation near Cibola Spring, Sevilleta National Wildlife Refuge, Socorro County, New Mexico: New Mexico Museum of Natural History and Science, Bulletin 89, p. 233-238.

Access to the Sevilleta National Wildlife Refuge is restricted.  A research permit was granted to work in this area.