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UK Wildlife

Exploring the fauna of Britain

Dasornis - a Giant fossil bird

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Being that I have a bsc in Palaeobiology + Evolution and an MSc in Micropalaeontology there has been a notable lack of anything relating to these on my blog. And today when I found a story on my 'beloved' London Clay, on which my undergraduate project was on, I thought it was time I rectified this.

The bird in question's fossil skull was found on the Isle of Sheppey, North Kent and was a relative of ducks and geese, which lived in the Eocene. Based on the fact it was found in the London Clay, around 50 million years ago that would make it Early Eocene (Ypresian) in age.

(picture of skull from here Credit: Fred Clouter)

This species (well technically genus) has been named Dasornis. It is remarkable for a number of reasons: the first is its sheer size, an estimated 5m from wing tip to wing tip, which would probably make it the largest flying bird of its time and a full 1m larger than the bird with the biggest wingspan today, the wandering albatross. The other interesting feature is one it has in common with other pelagornithids or 'bony toothed birds,' a set of 'psuedo-teeth' along its bill, which it used presumably for catching slippery prey like fish and squid

(Picture credit Ludger Bollen, from "Der Flug des Archaeopteryx", Quelle+Meyer Vlg.)


The paper: Mayr, G., 2008, A skull of the giant bony-toothed bird Dasornis (Aves: Pelagornithidae) from the Lower Eocene of the Isle of Sheppey”, Palaeontology, Vol. 51, Part 5, 2008, pp. 1107–1116

MothGarden spider

Comments

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I've always regretted that terratorns are extinct :wink:

Thanks for the info. By the way, have you graduated now?

By SittingFox, # 2. October 2008, 17:53:42

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terratorns were rather cool - probably the only vbirds with a bigger wingspan.

I managed to pass my degree - just got to find one of those job thingys now lol

By Ukwildlife, # 2. October 2008, 20:14:21

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Well, congrats! :yes: :hat:

Job thingies...hm...yeah, it's not easy but I'll sure you'll find something :up:

By SittingFox, # 2. October 2008, 20:57:42

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Anonymous writes:

"Based on the fact I was found in the London Clay, around 50 million years ago..."
:yikes: Do you still have all your own teeth? :D

By anonymous user, # 13. October 2008, 13:11:02

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