They are, in effect, living fossils whose origins go back 350 million years.

They are described as "living fossils" and relatively little is known about them.

This species, along with others in the family, have changed little over the past 200 million years, and thus represent "living fossils".

From this perspective, it is humans who are the living fossils.

Living fossils are not identical to their ancestors, of course.

Yes, and it was easy for our parents to buy the fealty of these living fossils from the family past.

Living fossils a link to the beginning of life.

This move means that the Argyropeza species are now considered to be living fossils.

Indeed the horseshoe crabs are often considered to be living fossils.

In the intervening 325 million years, phreatoicideans have changed little, and are thus considered living fossils.

Some of these are informally known as "living fossils".

Groups like this are often called living fossils.

The two species of living glypheids are considered "living fossils".

Turtles are first known from 215 million years ago, but for some reason they are not often mentioned as living fossils.

"They are considered to be living fossils," Ms. Jones said.

These tall trees are living fossils, dating back to early in the Mesozoic era.

Living fossils are surviving representatives of ancient groups of plants or animals.

Due to their structural conservatism, the velvet worms were thus considered "living fossils".

It is far from certain that the Ptilocolepinae are the living fossils such an arrangement would imply them to be.

These sponge reefs are considered to be "living fossils."

Their unusual appearance led Peissel to speculate that they could be "living fossils."

Some, such as the wrens and tuatara, are so unique that they have been called living fossils.

The few species which are extant are sometimes termed "living fossils".

The lack of major morphological change since 250 million years ago has led to Notostraca being described as living fossils.

Perhaps the blobs were remnants of living fossils more fearsome than the dinosaurs.

Because of that, it is sometimes called a living fossil.

The plants have often been considered to be a living fossil.

They are, in effect, living fossils whose origins go back 350 million years.

And in validation of his own status as a living fossil.

They are described as "living fossils" and relatively little is known about them.

From this perspective, it is humans who are the living fossils.

She's a living fossil, you know, unchanged in millions of years.

Living fossils are not identical to their ancestors, of course.

If he had been a living fossil long ago, he was far more of one now.

Some people have called the giant panda a living fossil.

The various species look very similar, and the genus is a good example of a living fossil.

This species, along with others in the family, have changed little over the past 200 million years, and thus represent "living fossils".

Yes, and it was easy for our parents to buy the fealty of these living fossils from the family past.

The ginkgo tree is what scientists call a living fossil.

The okapi is sometimes referred to as an example of a living fossil.

This tree is a "living fossil" dating back to the age of the dinosaurs.

It is a living fossil with no close relatives: its fossils date from 230 million years ago.

The giant panda has been referred to as a living fossil.

"Living fossil" is a turn of phrase, not a literal interpretation.

Living fossils a link to the beginning of life.

Its identification as a "living fossil" caused a scientific sensation.

Because of the great age of this species it is sometimes described as a living fossil.

Indeed the horseshoe crabs are often considered to be living fossils.

The endangered Purple frog was discovered in 2003 to be a living fossil.

Informal sources commonly refer to the plant as a "living fossil".