Sentences with phrase «other placental mammals»

More recent genetic analysis — not yet universally accepted — places bats in the superorder Laurasiatheria, with a diverse bunch of other placental mammals including whales, dogs and giraffes.

The team's results suggest that, even though there is no SRY gene in T. osimensis, the regulatory genes that normally turns on are present and operate as they do in other placental mammals.

Not exact matches

Marsupials have evolved in Australia several forms which occupy ecological niches held on other continents by placental mammals — wolf - like, squirrel - like, mole - like, woodchuck - like, etc..

Senior author, Professor Anjali Goswami (UCL Genetics, Evolution & Environment and UCL Earth Sciences), said: «Our findings refute those of other studies which overlooked the fossils of placental mammals present around the last mass extinction.

We plan on using it to study other large - scale evolutionary patterns such as how early placental mammals dispersed across the continents via land bridges that no longer exist today.»

There are three kinds of mammals: egg - laying monotremes such as the platypus, marsupials like kangaroos and opossums, and the majority — placental, or eutherian, mammals — including humans and about 4400 other mammal species.

A new digital reconstruction of the chromosomes of the ancestor of all placental mammals reveals that these tightly packed structures of DNA and proteins have become scrambled over time — a finding that may help pinpoint possible problem sites in our genomes that underlie cancer and other disease.

This means that in this feature it closely resembled monotremes (egg - laying mammals like the platypus), whereas other features brought it closer to marsupials and placental mammals.

250 - year - old statistical technique has prompted researchers to rewrite the evolutionary history of placental mammals, which include humans and all other mammals that give birth to live, fully developed young.

(The placental mammals are one of three major groups of mammals; the other two are the egg - laying monotremes and the pouched marsupials.)

Some suggest that rabbit - or ungulate - like placental mammals existed early in the Cretaceous period, whereas other researchers push for a more recent origin, circa 65 million years ago — around the time when dinosaurs disappeared.

By comparing 400 morphological features, such as the shapes and numbers of teeth, in the new fossil with those in 68 other specimens, the researchers have now placed the 73 - million - year - old creature in the Eutherian evolutionary tree, an umbrella group that includes placental mammals.

Krause believes the tooth adds significantly to the accumulating evidence that marsupials were already broadly distributed on Gondwana before lemurs and other modern placental mammals arrived on Madagascar about 88 million years ago.