Pages

.

Showing posts with label millions. Show all posts
Showing posts with label millions. Show all posts

Large Ancient Platypus With Teeth

We see the platypus as a quiet curious animal always on the go, but millions of years ago it was twice as big and had vicious teeth. It hunted turtles crayfish and frogs. Paleontologists have called it Platypus Godzilla because it would have been quite vicious.

The modern platypus, Obdurodon tharalkooschild, is only half a meter long. Its quiet, secretive life could indicate that it is heading for extinction. Identifying platypus fossils is easy if teeth are found, because they are so different from other species.

Platypus teeth are blunt. The animals must have "bruised" their prey to death. Fossils of the ancient platypus were not ancestors of modern platypus. They were a side branch "experimenting' with being a larger size.

Just why platypus millions of years old had functioning teeth while modern ones have virtually lost theirs is not known. Despite being good a hunter Godzilla did itself go extinct. Modern tharalkoo live in a narrow niche. If there is drastic change in the environment they will perish.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Conservation by Ty Buchanan
     Australian Blog                         
ALL BLOG ARTICLES· ──► (BLOG HOME PAGE)
Share Article
reade more... Résuméabuiyad

New Classification System for Bird Species

Birds are the most diverse creatures on Earth.  Not only have they changed into different species on large continents, they have also adapted specifically to environments on islands.

A new classification system is in the form of a circle with increasing diversity as one moves out in time from the center.  different types of birds are correctly located on the figure covering a period of 50 million years.

There is not one specific ancestor.  "Base" species take the form  of a circle of time moving out from the center and new kinds of birds branch off directly to the outer edge.  Fast evolving birds are in red; slower ones are drawn in blue.

Significantly birds such as woodpeckers often split into new species, while hornbills, for example, did not.  There was more diversification in the Western Hemisphere.  Furthermore, species did not proliferate in the tropics because the climate remained stable there over a long period.
. . . . . . . . . . . . . . . . . . . .
Biology
TwitThis
reade more... Résuméabuiyad