Samlinger Lokaliteter TidstavleFaunalister Blin


Aves phylum

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Katalognummer:
758
Accessionsnummer:
DK 773
Samling:
Danekræsamlingen
Samler:
Statens Naturhistorisk Museum
Finder:
Mette Hofstedt
Bestemt af:
Estelle Bourdon
Lokalitet:
Trelde Næs, Fredericia
Stratigrafi:
Lillebælt Ler Formationen
Periode:
Eocæn [Ypresien/Lutetien]
Type:
Konkretion
Sediment:
Mangancarbonat

Billede

Foto ©: Sten Lennart Jakobsen


 Beskrivelse:   af  Estelle Bourdon 
DK 773 Hjernekasse af mindre fugl i konkretion

Fossil bird - braincase in concretion.
The specimen consists of a well-preserved braincase enclosed in a small calcareous concretion. The braincase is nearly complete, preserved in three dimensions and undistorted. It is exposed in dorsal and caudal views, and the ventral part of the braincase is concealed by sediment. The braincase was from a small bird the size of a bee-eater, and obviously belongs to a species which is distinct from skull DK 771. Few details are currently visible on the braincase, but there is no doubt that further preparation will expose some exquisite morphological details. 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 evolution of modern birds in the early Cenozoic. Overall, I think that this specimen is remarkable and is ought to be declared Danekræ.

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