By the researchers' calculations, the glyptodonts diverged from these armadillos about 35 million years ago, from a common ancestor that weighed six kilograms.
He thought the extinct animal, later dubbed a glyptodont, must have looked like a supersized armadillo.
As a result, the identification of North American glyptodonts
relies mostly on characters of the carapace and osteoderms (Gillette and Ray, 1981).
Apart from long-extinct animals, like mammoths and glyptodonts
, there were also some familiar faces which survived the test of time - the muskoxen, cougar and bison.
The sweet spot of a biological hammer: the centre of percussion of glyptodont
(Mammalia: Xenarthra) tail clubs.
According to Dr Blanco, of the Faculty of Science in Montevideo, Uruguay, "We concluded several large species of glyptodonts
used the tail clubs mainly for powerful blows in ritualised fighting but the small species used the tail clubs also in other situations as defence against predators.
The thick armor and large size of adult glyptodonts
and pampatheres probably would have been a deterrent even for a pack of dire wolves.
New 4,300 YR 14C age of glyptodonts
at Lujan river (Buenos Aires, Argentina) and its implications.
What caused the virtually simultaneous demise of mammoths, mastodons and saber-toothed cats, not to mention native horses, ground sloths, native camels, armadillo-like glyptodonts
, giant peccaries, mountain deer, giant beavers, four-pronged antelopes, dire wolves, native lions and giant short-faced bears?
ABSTRACT: Two new glyptodonts
are described for Costa Rica.
6E-F) is the right dentary fragment of a glyptodont
with very damaged teeth.
2007: Late Pleistocene (Rancholabrean) Glyptodont
and Pampathere (Xenarthra, Cingulata) from Sonora, Mexico.