"Recherches sur les ossemens fossiles, ou l'on rétablit les caractères de plusieurs animaux dont les révolutions du globe ont détruit les espèces". "Sur différentes dents du genre des mastodontes, mais d'espèces moindres que celle de l'Ohio, trouvées en plusieurs lieux des deux continents". "Advances in proboscidean taxonomy & classification, anatomy & physiology, and ecology & behavior". ^ Shoshani, Jeheskel Tassy, Pascal (2005). Unlike close relative Cuvieronius its tusks were not twisted, however their length and shape are observed as greatly variable depending on the individual. It had two tusks on either side of its trunk, like other members of Gomphotheriidae. Notiomastodon platensis is known from MECN 82, a 35-year-old male that would be approximately 2.52 metres (8.3 ft) tall, with an estimated weight of 4.4 tonnes (4.3 long tons 4.9 short tons). However some authors think that this is inconclusive, as they think the North American Stegomastodon material is too scarce and fragmentary to make a definitive statement. This article treats Notiomastodon separately because in phylogenetic analyses, Notiomastodon/Stegomastodon platensis specimens are not sister taxa, which would make the genus Polyphyletic. The species genus is currently under dispute, whether it should belong to Notiomasodon or Stegomastodon as regardless of genus, the species is considered synonymous with Haplomastodon by most authors, as the specimens were not considered morphologically distinct from this species. For centuries, the taxonomy of gompotheres, including Notiomastodon had been subject to debate, with many genus and species names for similar South American Gompotheres. It was assigned to Gomphotheriidae by Carroll (1988). Notiomastodon was named by Cabrera (1929). Today, neither tooth is considered diagnostic to any specific taxon. Due to the Principle of Priority, this means that " Mastodon andium" was invalid, as " Mastotherium hyodon" was named first from the same specimen. In 1824, Cuvier gave the specific names of "Mastodon andium" to the “mastodonte des cordillères” specimen, and " Mastodon humboldtii" to the “ mastodonte humboldien”. It was Fischer in 1814 who gave the “mastodonte des cordillères” specimen the first specific name " Mastotherium hyodon". Proboscideans in South America were first described by Georges Cuvier in 1806 but failed to given them specific names beyond "Mastodon". Notiomastodon is an extinct proboscidean genus of gomphothere (a distant relative to modern Elephants) endemic to South America from the Pleistocene to the Holocene living for approximately 1.794 million years.
Nowadays, appear to be only 2 proboscidean species recognized in South America Cuvieronius hyodon and Notiomastodon platensis.") Today is considered junior synonym of Notiomastodon.
This skeleton was referred to Haplomastodon genus in the past. ^("Here it is Notiomastodon based on a subadult fairly complete skeleton (some parts came from other individuals).įully grown individuals may attained 2.9 m at the shoulders and 7 tonnes in body mass. Temporal range: Middle Pleistocene-Early Holocene (possible Early Pleistocene record) ~1.2–0.006 Ma
0 kommentar(er)
