-
Protosirenidae is an
extinct primitive family of the
order Sirenia.
Protosirenids are
thought to have been
amphibious quadrupeds,
meaning that they spent...
- manatee, and West
African manatee) with a
total of four species. The
Protosirenidae (Eocene sirenians) and
Prorastomidae (terrestrial sirenians) families...
- †Embrithopoda †Phenacolophidae †Arsinoitheriidae
order Sirenia †Prorastomidae †
Protosirenidae (Dugongidae?)
Dugongidae Trichechidae order Proboscidea †Phosphatheriidae...
- Eocene. The
earliest known sea cows, of the
families Prorastomidae and
Protosirenidae, are both
confined to the Eocene, and were
about the size of a pig,...
- †Eosiren †Eotheroides †Prototherium †Sobrarbesiren †Prorastomidae
Pezosiren Prorastomus †
Protosirenidae Ashokia Libysiren Protosiren Trichechidae Dugongidae...
- †Eosiren †Eotheroides †Prototherium †Sobrarbesiren †Prorastomidae
Pezosiren Prorastomus †
Protosirenidae Ashokia Libysiren Protosiren Trichechidae Dugongidae...
- †Eosiren †Eotheroides †Prototherium †Sobrarbesiren †Prorastomidae
Pezosiren Prorastomus †
Protosirenidae Ashokia Libysiren Protosiren Trichechidae Dugongidae...
- †Eosiren †Eotheroides †Prototherium †Sobrarbesiren †Prorastomidae
Pezosiren Prorastomus †
Protosirenidae Ashokia Libysiren Protosiren Trichechidae Dugongidae...
- †Eosiren †Eotheroides †Prototherium †Sobrarbesiren †Prorastomidae
Pezosiren Prorastomus †
Protosirenidae Ashokia Libysiren Protosiren Trichechidae Dugongidae...
- Eocene. The
earliest known sea cows, of the
families †Prorastomidae and †
Protosirenidae, were both
confined to the Eocene, and were pig-sized, four-legged,...
