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Haplomastodon is a dubious extinct genus of proboscidean endemic to South America during the Pleistocene from 1.810 Ma—11,000 years ago, living for approximately 1.789 million years.[1] Haplomastodon is considered synonymous with Notiomastodon by some researchers.[2][3]

Haplomastodon
Temporal range: Mid-Late Pleistocene (Ensenadan-Lujanian)
~1.810–0.011 Ma
HaplomastodonPisa.JPG
Skull of H. chimborazi
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Proboscidea
Family: Gomphotheriidae
Genus: Haplomastodon
Hoffstetter 1950
Species

See text

Synonyms

Notiomastodon Mothé et al. 2013

It had two tusks on either side of a trunk like other members of Gomphotheriidae. Its apparent range was from Venezuela southward to Argentina where fossils were recovered in the Suelo Formation, a quarry dig in Corrientes Province.[4] Fossil remains described as Haplomastodon waringi have been found in Soatá in the department of Boyacá in Colombia.[5]

Contents

SpeciesEdit

  • H. guayasensis Hoffstetter 1952
  • H. chimborazi Proaño 1922
  • H. waringi Holland 1920

Taxonomical revisionEdit

Haplomastodon was named by Hoffstetter in 1950. It was assigned to Gomphotheriidae by Carroll (1988). Researchers from Rio de Janeiro University proposed in 2013 that all Haplomastodon species should be reassigned to one single species, Notiomastodon platensis.[2]

DistributionEdit

ReferencesEdit

  1. ^ Paleobiology database: Haplomastodon basic info
  2. ^ a b Mothé, Dimila; Avilla, Leonardo S.; Cozzuol, Mário; Winck, Gisele R. (25 October 2012). "Taxonomic revision of the Quaternary gomphotheres (Mammalia: Proboscidea: Gomphotheriidae) from the South American lowlands". Quaternary International. 276-277: 2–7. Retrieved 6 May 2017. 
  3. ^ Mothé, Dimila; dos Santos Avilla, Leonardo; Asevedo, Lidiane; Borges-Silva, Leon; Rosas, Mariane; Labarca Encina, Rafael; Souberlich, Ricardo; Soibelzon, Esteban; Roman Carrion, José Luis; Ríos, Sergio D.; Rincon, Ascanio D.; Cardoso de Oliveira, Gina; Pereira Lopes, Renato (30 September 2016). "Sixty years after 'The mastodonts of Brazil': The state of the art of South American proboscideans (Proboscidea, Gomphotheriidae)". Quaternary International. Retrieved 4 May 2017. 
  4. ^ Álvarez, B.B. (1974). "Los Mamíferos Fósiles del Cuaternario de Arroyo Toropi, Corrientes (Argentina)". Ameghiniana. 11 (3): 295–311. 
  5. ^ Soatá in the Paleobiology database

Further readingEdit

  • Ranzi, Alceu. Paleoecologia da Amazonia - Megafauna do Pleistoceno. Florianópolis,. Editora da UFSC, 2000.