Oldest known footprints in Grand Canyon found

[Thecosmilia Trichitoma]

Oldest known footprints in the Grand Canyon found

[Oxytropidoceras]

The abstracts related to this trackway are:

 

Rowland, Stephen M., 2018, Trackway of a Sideways-Walking Basal 

Tetrapod in the Pennsylvanian Manakacha Formation in Grand Canyon

 National Park. Abstracts of 78th Annual Meeting, Albuquerque 

Convention Center Albuquerque, New Mexico, U.S.A. October 

17–20, 2018. Society of Vertebrate Paleontology. p, 206 

http://vertpaleo.org/Annual-Meeting/Annual-Meeting-Home/SVP-2018-program-book-V4-FINAL-with-covers-9-24-18.aspx

 

and

 

Rowland, Stephen M., 2017, Trackway of a Sideways-Walking Pelycosaur

in the Carboniferous Manakacha Formation in Grand Canyon National Park.

Geological Society of America Abstracts with Programs. Vol. 49, No. 6, 

https://gsa.confex.com/gsa/2017AM/meetingapp.cgi/Paper/297334

https://www.researchgate.net/publication/321402522_TRACKWAY_OF_A_SIDEWAYS-WALKING_PELYCOSAUR_IN_THE_CARBONIFEROUS_MANAKACHA_FORMATION_IN_GRAND_CANYON_NATIONAL_PARK

 

Yours,

 

Paul H.