-
ground sloths that
lived from
approximately 23 mya—11,000
years ago.
Megatheriids appeared during the Late
Oligocene (Deseadan in the
SALMA classification)...
-
Gervais 1855 (megalonychid
ground sloths)
Family †Megatheriidae Gray 1821 (
megatheriid ground sloths)
Family †Nothrotheriidae
Ameghino 1920 (nothrotheriid ground...
- surface-level
deposits in the
Americas contained later mammals like the
megatheriid ground sloth Megatherium and the
mammutid proboscidean Mammut (later...
-
include therizinosaurs, the
pantodont Barylambda, homalodotheres, and
megatheriid ground sloths.
Anisodon shows ischial callosities on the pelvis, a characteristic...
-
Megalonyx jeffersonii was
appropriately named after Thomas Jefferson. The
megatheriid ground sloths are
relatives of the megalonychids;
these two families...
-
related to
mylodontid sloths. The
megalonychids plus
nothrotheriid and
megatheriid sloths,
together with
living three-toed sloths, make up the
sloth superfamily...
- of Panama. The
latter development,
about 3
million years ago,
allowed megatheriids and
nothrotheriids to also
invade North America as part of the Great...
-
Family †Megalonychidae:
megalonychid ground sloths Family †Megatheriidae:
megatheriid ground sloths Family †Nothrotheriidae:
nothrotheriid ground sloths and...
-
colonized the
Antilles previously, by the
early Miocene. In contrast,
megatheriid and
nothrotheriid ground sloths did not
migrate north until the formation...
- (9.0 ft).
While nothrotheriids were
small compared to some of
their megatheriid relatives,
their claws provided an
effective defense against predators...
