Samlinger Lokaliteter TidstavleFaunalister Blin


Aves phylum

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 Faktiske data om fund 
Katalognummer:
777
Accessionsnummer:
DK 788
Samling:
Danekræsamlingen
Samler:
Statens Naturhistorisk Museum
Finder:
Holger Wunsch
Bestemt af:
Estelle Bourdon
Lokalitet:
Skarrehage, Mors
Stratigrafi:
Periode:
Tidlig Eocæn
Type:
Konkretion
Sediment:

Billede

Foto ©: Sten Lennart Jakobsen


Billede

Foto ©: Sten Lennart Jakobsen


 Beskrivelse:   af  Estelle Bourdon 
DK 788 - Fossil bird - skull in concretion (part and counterpart)

The specimen consists of a well-preserved skull (braincase plus part of beak) enclosed in a calcareous concretion. The specimen has been broken in the median plane, so that the part and counterpart include the right and left side of the skull, respectively. The braincase is preserved in three dimensions and undistorted. The cranial cavity is visible on either side and preserved in exquisite detail, including the forebrain cavity, cerebellar cavity, and bony labyrinth. The frontal bone is visible, as well as the interorbital septum. The caudal part of the beak is preserved in anatomical connection with the braincase. The narial openings seem to be large. Some palate bones might be preserved, but they are concealed by sediment. The skull belonged to a medium-sized bird slightly larger than a blackbird. Further preparation is needed on this specimen. Another option would be to investigate the specimen with X-ray micro CT. The very good preservation of the braincase would allow a reconstruction of the brain of this extinct bird. Further study on this specimen will undoubtedly shed new light on the early evolution of modern birds. Overall, I think that this specimen is remarkable and ought to be declared Danekræ.

 Note Fuglekranium

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