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Metaxytherium floridanum

Mammalia - Sirenia - Dugongidae

Taxonomy
Metaxytherium floridanum was named by Hay (1922). Its type specimen is USNM 7221, a maxilla, and it is a 3D body fossil. Its type locality is Prairie Pebble Phosphate Co., which is in a Serravallian lagoonal sandstone in the Peace River Formation of Florida.

It was recombined as Felsinotherium floridanum by Simpson (1932) and Sherman (1952).

Sister species lacking formal opinion data

View classification of included taxa

Synonyms
Synonymy list
YearName and author
1856Ischyrotherium antiquus Leidy p. 89
1856Manatus antiquus Leidy p. 164
1857Ischyrotherium antiquum Leidy p. 90
1860Manatus antiquus Leidy p. 117
1860Ischyrotherium antiquum Leidy p. 150
1869Ischyrosaurus antiquus Cope p. 39
1877Manatus antiquus Leidy p. 214
1889Manatus antiquus Leidy p. 27
1898Manatus antiquus Trouessart p. 1000
1902Trichechus antiquus Hay p. 583
1904Trichechus antiquus Trouessart p. 749
1922Metaxytherium floridanum Hay p. 1
1926Halitherium antiquum Allen
1930Halitherium antiquusm Hay p. 656
1930Metaxytherium floridanum Hay p. 656
1932Felsinotherium floridanum Simpson p. 447
1932Felsinotherium ossivallense Simpson p. 448 figs. Fig. 12
1952Felsinotherium floridanum Sherman p. 98
1971Metaxytherium ossivallense Reinhart
1974Metaxytherium floridanum Fondi and Pacini p. 45
1974Metaxytherium ossivallense Fondi and Pacini p. 45
1976Metaxytherium ossivalense Reinhart p. 199
1976Metaxytherium floridanum Reinhart p. 216
1988Metaxytherium floridanum Domning p. 399
1994Metaxytherium floridanum Domning p. 189
1996Metaxytherium floridanum Domning
2008Metaxytherium floridanum Domning
2014Metaxytherium floridanum Voss p. 91 figs. Figure 3
2018Metaxytherium floridanum Domning p. 250

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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()
RankNameAuthor
Therapsida()
infraorderCynodontia()
Epicynodontia
infraorderEucynodontia
Probainognathia
Mammaliamorpha
Mammaliaformes
classMammalia
subclassTribosphenida()
infraclassEutheria()
Placentalia
AfrotheriaStanhope et al. 1998
Tethytheria
orderSirenia()
familyDugongidae
genusMetaxytherium
speciesfloridanum

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
No diagnoses are available