- species. The
Protosirenidae (Eocene
sirenians) and
Prorastomidae (terrestrial
sirenians)
families are extinct.
Sirenians are
classified in the
clade Paenungulata...
- time. The
first appearance of
sirenians in the
fossil record was
during the
early Eocene, and by the late Eocene,
sirenians had
significantly diversified...
- to
modern sirenians. Steller's sea cows are
reported to have
grown to 8 to 9 m (26 to 30 ft) long as adults, much
larger than
extant sirenians. In 1987...
- be the hippopotamuses.
Sirenians, the sea cows,
became aquatic around 40 million
years ago. The
first appearance of
sirenians in the
fossil record was...
- or over-large
pikas but are much more
closely related to
elephants and
sirenians.
Hyraxes have a life span of 9 to 14 years. Both
types of "rock" hyrax...
-
fossil record shows sirenians appearing in the Eocene, when they most
likely lived in the
Tethys Ocean. The two
extant families of
sirenians are
thought to...
-
adipose tissue under the skin of all cetaceans, pinnipeds, penguins, and
sirenians. It was
present in many
marine reptiles, such as
ichthyosaurs and plesiosaurs...
- m****
increase (BMI) is
known in a
variety of
other marine mammals like
sirenians and from some
other basilosaurids — namely,
members of the
subfamily Pachycetinae...
-
areas is
considered a
minor pest.
Along with
other hyrax species and the
sirenians, this
species is the most
closely related to the elephant. An unrelated...
-
Trichechidae is a
family of
sirenians that
includes all
living manatees and
several extinct genera.
Trichechidae †Miosireninae †Anomotherium †Anomotherium...
