Prototherium

Prototherium Temporal range: Middle Eocene–Late Eocene PreꞒ Ꞓ O S D C P T J K Pg N
Mounted P. veronense skeleton
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Sirenia
Family:	Dugongidae
Subfamily:	†Halitheriinae
Genus:	Prototherium de Zigno, 1887
Species
Prototherium veronense (de Zigno, 1887) (type) Prototherium ausetanum Balaguer & Alba, 2016 Prototherium intermedium Bizzotto, 1983

Prototherium is a genus of extinct sirenian related to the dugong. It is known from middle (Bartonian) and upper Eocene deposits in Italy and Spain. Type species is P. veronenses (Zigno, 1887^[1])

Three species are now included in the genus, but their phylogenetic relations are not resolved and possibly one of them Prototherium intermedium Bizzotto 1983^[2] must be excluded. In the same way, relations between Prototherium and other genus are confused and need revision. A third species was described in Spain in 2016, P.ausetanum^[3].

Related species

• Metaxytherium
• Rytiodus

See also

• Evolution of sirenians

References

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Sirenian genera

• Kingdom: Animalia
• Phylum: Chordata
• Class: Mammalia
• Superorder: Afrotheria
• Clade: Paenungulata

Sirenia

†Eosiren †Eotheroides †Prototherium †Sobrarbesiren
†Prorastomidae	Pezosiren Prorastomus
†Protosirenidae	Ashokia Libysiren Protosiren
Trichechidae	†Miosireninae Anomotherium Miosiren Trichechinae †Potamosiren †Ribodon Trichechus
Dugongidae	†Anisosiren †Caribosiren †Halitherium †Indosiren †Lentiarenium †Kaupitherium †Metaxytherium †Paralitherium †Priscosiren †Prohalicore †Stegosiren †Sirenavus †Hydrodamalinae Dusisiren Hydrodamalis Dugonginae †Bharatisiren †Callistosiren †Crenatosiren †Corystosiren †Culebratherium †Dioplotherium †Domningia Dugong †Italosiren †Kutchisiren †Nanosiren †Norosiren †Rytiodus †Xenosiren

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