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2008-09-27 Trovato fossile di “Super-Papera” – Dasornis (GBR)

Fossil of 15ft duck in clay

DISCOVERY

The skull of a giant duck which had sharp teeth, a 15ft wingspan has been found in southern England.

The fossil of the Dasornis, which cruised seas covering the South East 50 million years ago, was buried in clay at the Isle of Sheppey, Kent.

Their wingspan – the length of a family car – meant they could cover huge distances. Latest research suggests the closest living relative of the bird is the humble duck.

Expert Gerald Mayr told journal Palaeontology the skull is “one of the best found”. It is now on show in Germany.

http://www.mirror.co.uk/news/top-stories/2008/09/27/fossil-of-15ft-duck-in-clay-115875-20755334/

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IT IS A PLANE? NO, IT’S A 16FT GOOSE…

IT WAS the Mother Goose of all time – a bird with a 16ft wing span which soared over southern England 50million years ago.

The bird had a 16 foot wing span and soared over the wetlands of prehistoric southern England

The bird had a 16 foot wing span and soared over the wetlands of prehistoric southern England Scientists discovered this Dasornis fossil skull buried in clay on the Isle of Sheppey Now a well-preserved fossil skull of the giant bird, a dasornis, has been found on the Isle of Sheppey off the north Kent coast, scientists announced yesterday.Dasornis was in many ways similar to the modern albatross, but its closest cousins are ducks and geese. Scientists discovered this Dasornis fossil skull buried in clay on the Isle of Sheppey

Dr Gerald Mayr, who described the discovery in the journal Palaeontology, said: “Imagine a bird like an ocean-going goose, almost the size of a small plane.

“These were pretty bizarre animals, but perhaps the strangest thing about them is that they had sharp, tooth-like projections along the cutting edges of the beak.

“No living birds have true teeth because their distant ancestors did away with them more than 100million years ago, probably to save weight and make flying easier.

“But the bony-toothed birds, like dasornis, are unique among birds in that they re-invented tooth-like structures.”

He added: “These birds probably skimmed across the surface of the sea, snapping up fish and squid.

“With only an ordinary beak, these would have been difficult to keep hold of, and the pseudo-teeth evolved to prevent meals slipping away.”

http://www.express.co.uk/posts/view/63421/It-is-a-plane-No-it-s-a-16ft-goose

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A SKULL OF THE GIANT BONY-TOOTHED BIRD DASORNIS (AVES: PELAGORNITHIDAE) FROM THE LOWER EOCENE OF THE ISLE OF SHEPPEY
Plane-sized bird
Sydney Morning Herald – 1 ora fa
A STUDY has revealed a bird that swooped over waters covering what is now south-east England had wings that spanned five metres tip to tip and bony teeth to
Bird the size of plane found near London
ABC Online – 17 ore fa
Scientists have revealed the existence of a huge bird with bony teeth and wings spanning five metres, that once swooped over the wetlands of southern
When giant prehistoric geese roamed the earth
MSNBC – 18 ore fa
By Andrea Thompson Scientists have found a new huge and well-preserved fossil of a goose and duck relative that swam around what is now England 50 million
Lord of the skies was a giant goose with a beak full of crocodile
Times Online – 19 ore fa
A giant geese-like bird that was the size of a light aircraft and had a beak like a crocodile’s jaws has been found to have soared above Britain 50 million
Mother Of A Goose! Giant Ocean-going Geese With Bony-teeth Once
Science Daily (press release) – 20 ore fa
ScienceDaily (Sep. 26, 2008) — A 50 million year old skull reveals that huge birds with a 5 metre wingspan once skimmed across the waters that covered what
Mega-bird had a five-metre wingspan… and teeth
AFP – 21 ore fa
PARIS (AFP) — A bird that swooped over the waters covering what is now southeast England had wings that spanned five metres (16.25 feet) tip to tip and had
Giant prehistoric geese the size of small plane
Telegraph.co.uk – 21 ore fa
By Richard Alleyne Giant prehistoric geese the size of small aircraft once flew over Britain, scientists have discovered. Dasornis, which had a 16 ft
Fossil of 15ft duck in clay
Mirror.co.uk – 11 ore fa
The skull of a giant duck which had sharp teeth, a 15ft wingspan has been found in southern England. The fossil of the Dasornis, which cruised seas covering
Don’t ruck with this duck
The Sun – 15 ore fa
GIANT ducks sporting teeth and a 15ft wingspan once flew over Britain, experts said yesterday. One of the best-ever fossilised skulls of the creatures
One more terror for ancient ocean fish: monster ducks
World Science – 18 ore fa
As if the little fish of the ancient seas didn’t have enough terrifying predators to deal with, they also had to contend with duck-like birds,
Big bird: Experts unveil skull of giant duck with teeth and the
Daily Mail – 21 ore fa
By Daily Mail Reporter Instead of the fluffy little creatures seen today, these big birds boasted ‘teeth’, a 16ft wingspan and once flew over Britain.

 

GERALD MAYR
Forschungsinstitut Senckenberg, Sektion Ornithologie, Senckenberganlage 25, D-60325 Frankfurt am Main, Germany; e-mail: Gerald.Mayr@senckenberg.de
Copyright © The Palaeontological Association, 2008
KEYWORDS
Fossil birds • bony-toothed birds • Dasornis emuinus • taxonomy • evolution • Eocene

ABSTRACT

Abstract: The first substantial skull of a very large Paleogene bony-toothed bird (Pelagornithidae) is described from the Lower Eocene London Clay of the Isle of Sheppey in England. The specimen is assigned to Dasornis emuinus (Bowerbank), based on a taxonomic revision of the large London Clay Pelagornithidae. Very large bony-toothed birds from the London Clay were known previously from fragmentary remains of non-comparable skeletal elements only, and Dasornis londinensis Owen, Argillornis emuinus (Bowerbank), A. longipennis Owen, and Neptuniavis miranda Harrison and Walker are considered junior synonyms of D. emuinus. The new specimen allows a definitive assignment of Dasornis to the Pelagornithidae and documents that this taxon closely resembles other bony-toothed birds in cranial morphology. It is hypothesized that giant size (i.e. a wingspan above 4 m) evolved only once within Pelagornithidae and that Dasornis emuinus is the sister taxon of the giant Neogene bony-toothed birds, which share a derived wing morphology.

Abstract References  |  Full Text: HTML, PDF (528k) | Related Articles | Citation Tracking

 

settembre 27, 2008 - Posted by | - Uccelli / Birds, 6 Eocene, Articolo sc. di riferimento, Europa, FREE ACCESS, P - Ritrovamenti fossili, Paleontology / Paleontologia | , , , , , , , , , , , , , ,

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