#FossilFridays, the lower jaws of the early #Paleocene #mesonychian #mammal #Dissacus navajovius as found eroding out of the #Nacimiento Formation, San Juan Basin, New Mexico #sanjuanbasin #newmexico
#fossilfridays #paleocene #mesonychian #mammal #dissacus #nacimiento #sanjuanbasin #newmexico