Anatomy of Haplomastodon chimborazi (Mammalia, Proboscidea) from the late Pleistocene of Ecuador and its bearing on the phylogeny and systematics of South American gomphotheres Author Ferretti, Marco P. text Geodiversitas 2010 2010-12-31 32 4 663 721 http://www.bioone.org/doi/abs/10.5252/g2010n4a3 journal article 10.5252/g2010n4a3 1638-9395 4688555 Genus Haplomastodon Hoffstetter, 1950 TYPE SPECIES . — Masthodon chimborazi Proaño, 1922 by monotypy. DIAGNOSIS. — As for the only species H. chimborazi , see Revised diagnosis below.