More than 100 genera have been described, and well known forms include Arkarua, Charnia, Dickinsonia, Ediacaria, Marywadea, Onega, Pteridinium, and Yorgia.

The segments of Dickinsonia have been described as " pneus ", chambers filled with a liquid at higher than ambient pressure, analogous to a quilted air mattress.

This Dickinsonia represented by only several very big specimens ( up to more than 1 m in length ), and has not a distinct determination.

The White Sea fossils are often associated with the Ediacaran " animals " Tribrachidium and Dickinsonia ; meandering trace fossil trails, possibly made by Kimberella ; and algae.

Dickinsonia costata, an Ediacaran organism of unknown affinity, with a quilted appearance.

There is no convincing fossil record of the placozoa, although the Ediacaran biota ( Precambrian, ) organism Dickinsonia appears to be closely allied with this phylum.

There are no identified related forms, although there is some vague resemblance to other Ediacaran forms such as Dickinsonia and Spriggina that share some of its enigmatic characteristics, such as the " staggered " or " glide symmetry " of its units.

It has also been claimed that Ediacaran fossils were lichens ; although this claim initially met with scepticism for all Ediacaran fossils, additional evidence has been marshalled for a lichen interpretation of Dickinsonia.

Dickinsonia is an iconic fossil of the Ediacaran biota.

Dickinsonia is known from unskeletonised impressions in late Ediacaran quartz sandstones in Ediacara and elsewhere in the Flinders Ranges of South Australia, as well as, Podolia of Ukraine, and the White Sea area and Central Urals of Russia, and has an estimated time range of 560-555 Myr .< ref name = Grazhdankin2004 >

Dickinsonia is a " resistant " fossil – that is to say, it is preserved as a ( usually concave ) cast on the underside of overlying bedding planes — unlike most Ediacaran fronds.

Eumetazoa ( Greek: εὖ, well + μετά, after + ζῷον, animal ) is a clade comprising all major animal groups except sponges, placozoa, and several other obscure or extinct life forms, such as Dickinsonia.

Dickinsonia is found in sedimentary beds 8 mm thick ; allowing for compaction, this allows these specimens a maximum height of 1 cm.

Schematic reconstructions of Dickinsonia costata, D. lissa, D. tenuis, D. menneri, D. sp.

The innards of Dickinsonia are thought to contain spindle-like fibres 0. 5 – 1 mm in diameter.

Arcing trackways of Dickinsonia fossils, termed Epibaion, have been found, but their interpretation too is insecure.

The structure of some Dickinsonia specimens has been interpreted as a putative " digestive – distributive " system.

Some spectacular fossils which can be attributed to Dickinsonia appear to preserve internal anatomy, believed to represent a tract that both digested food and distributed it throughout the organism.

Where Dickinsonia is found to be folded or bent, it is not deformed in a brittle manner, as a " death mask " would be ; indeed, it is not very flexible at all.

Dickinsonia is generally regarded as a member of the Vendazoa — a group of organisms that thrived just before most of the modern multicellular animal phyla appeared in the fossil record.

Other vendazoa such as Yorgia and Marywadea somewhat resemble Dickinsonia, and may be related.

The affinities of Dickinsonia are uncertain.

But her prettiness was what he had noticed first, and all the other things had come afterward: cruelty, meanness, self-will.

There was an artificial lake just out of sight in the first stand of trees, fed by a half dozen springs that popped out of the ground above the hillside orchard.

The first part of the road was steep, but it leveled off after the second bend and curled gradually into the valley.

No one was behind it, but in the rear wall of the office I noticed, for the first time, a door which had been left partially open.

The herd was watered and then thrown onto a broad grass flat which was to be the first night's bedground.

Once again, Tom Horn was the first and most likely suspect, and he was brought in for questioning immediately.

For Matilda, it was the first she had known in many a night.

Even the knowledge that she was losing another boy, as a mother always does when a marriage is made, did not prevent her from having the first carefree, dreamless sleep that she had known since they dropped down the canyon and into Bear Valley, way, way back there when they were crossing those other mountains.

Stevens was grunting over the last empty pocket when Russ abruptly rose and lunged toward Carmer's hat, which had tumbled half-a-dozen feet away when he first fell.

The Indian's arm whipped sidewise -- there was a flash of amber and froth, the crash of the bottle shattering against the side of the first car.

It was her first smile.

At first, I thought he was out of his head, talking wildly like this.

Hell, I gave him the first decent job he ever had, six, seven -- how many years ago was it, Rob ''??

Miss Langford ( her first name was Evelyn ) was an attractive girl.

School began in August, the hottest part of the year, and for the first few days Miss Langford was very lenient with the children, letting them play a lot and the new ones sort of get acquainted with one another.

It was just as well that the ignorant Dandy enjoyed himself to the hilt that first evening, for the room was to become his prison cell.

`` Bastards '', he would say, `` all I did was put a beat to that Vivaldi stuff, and the first chair clobbered me ''!!

In 1961 the first important legislative victory of the Kennedy Administration came when the principle of national responsibility for local economic distress won out over a `` state's-responsibility '' proposal -- provision was made for payment for unemployment relief by nation-wide taxation rather than by a levy only on those states afflicted with manpower surplus.

The first systematic thinking about this Pandora's box within Pandora's boxes was done four years ago by Fred Ikle, a frail, meek-mannered Swiss-born sociologist.

The smell at first was more surprising than unpleasant.

His collaboration with Washington, begun when he was the general's aide during the Revolution, was resumed when he entered the first Cabinet as Secretary of the Treasury.