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Populus sonorensis Axelrod 1939

PaleoDB taxon number: 370011

Full reference: D. I. Axelrod. 1939. A Miocene flora from the western border of the Mohave desert. Carnegie Institution of Washington Publications 516:1-129

Belongs to Populus according to D. I. Axelrod 1939

Sister taxa: Populus alexanderi, Populus douglasae, Populus hyperborea, Populus kansaseana, Populus lesquereuxi, Populus pliotremuloides, Populus prefremontii, Populus tidwellii

Type specimen: UCMP 1420, 1421. Its type locality is Cache Peak (P-3643), which is in a Hemingfordian/Barstovian terrestrial horizon in the Bopesta Formation of California.