New mastodon remains were collected in the Carchi Province, northern Ecuador. The levels from which the fauna was collected are referred to the Late Pleistocene (Late Lujanian Mammal Age). On the basis of this fossil material, we conclude that probably only one species of Haplomastodon was present in Ecuador, most of tropical South America, and temperate southwestern Brazil. At the present state of knowledge we feel it convenient to classify the different Haplomastodon demes of this faunal province as Haplomastodon ex gr. waringi (Holland, 1920). © 1993.
Ficcarelli, G., Borselli, V., Espinosa, M. M., & Torre, D. (1993). New Haplomastodon findsfrom the Late Pleistocene of northern Ecuador. Geobios, 26(2), 231–240. https://doi.org/10.1016/S0016-6995(93)80017-L