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Notiomastodon platensis

Mammalia - Proboscidea - Gomphotheriidae

Taxonomy
Mastodon platensis was named by Ameghino (1888). It is the type species of Notiomastodon.

It was recombined as Stegomastodon platensis by Zurita et al. (2004); it was recombined as Notiomastodon platensis by Ferreti (2008) and Mothé et al. (2012).

Synonyms
Synonymy list
YearName and author
1888Mastodon platensis Ameghino
1888Mastodon superbus Ameghino
1888Mastodon bonaerensis Moreno
1920Stegomastodon waringi Holand
1920Haplomastodon waringi Holland
1922Haplomastodon chimborazi Proaño
1930Stegomastodon superbus Cabrera
1952Haplomastodon chimborazi Hoffstetter p. 192
1952Haplomastodon (Aleamastodon) guayasensis Hoffstetter p. 208 figs. Fig. 47,48,50,52-58. Pl. VII, fig. 6-9
1956Haplomastodon waringi Paula Couto p. 106
1995Stegomastodon waringi Alberdi and Prado
2004Stegomastodon platensis Zurita et al.
2008Notiomastodon platensis Ferreti
2012Notiomastodon platensis Mothé et al.

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Synapsida()
Therapsida()
infraorderCynodontia()
RankNameAuthor
Epicynodontia
infraorderEucynodontia
Probainognathia
Mammaliamorpha
Mammaliaformes
classMammalia
subclassTribosphenida()
infraclassEutheria()
Placentalia
AfrotheriaStanhope et al. 1998
Tethytheria
orderProboscidea()
suborderElephantiformesTassy 1988
ElephantimorphaTassy and Shoshani 1997
ElephantidaTassy and Shoshani 1997
superfamilyGomphotherioideaHay 1922
familyGomphotheriidaeHay 1922
subfamilyCuvieroniinaeCabrera 1929
genusNotiomastodonCabrera 1929
speciesplatensis(Ameghino 1888)

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Diagnosis
ReferenceDiagnosis
D. Mothé et al. 2012A species of gomphothere that differs from the species of Rhynchotherium
and Gomphotherium in having no lower tusks. It differs from the species of Cuvieronius by the absence of spiraled torsion and spiral enamel band in upper tusks. It differs from the species of Rhynchotherium, Gomphotherium, and Cuvieronius by having a brachycephalic skull with a high parieto-occipital region (“elephantoid” condition, also cited by Ferretti, 2008), and molar teeth
more complex and with larger number of cones. It differs from Stegomastodon texanus and the species of Sinomastodon by the loss of the supraorbitals foramen. Differs from S. texanus by possessing a higher land more anteriorly oriented ascending ramus and the posterior opening of the mandibular canal (mandibular foramen), placed more dorsal on the medial side of the ascending ramus.