Samlinger Lokaliteter TidstavleFaunalister Blin


Metopaster sp.

 Faktiske data om fund 
Katalognummer:
502
Accessionsnummer:
DK 561
Samling:
Danekræsamlingen
Samler:
Statens Naturhistorisk Museum
Finder:
Lise Rodin
Bestemt af:
Lokalitet:
Helgenæs
Stratigrafi:
Periode:
Type:
Sediment:

Billede

Foto ©: Sten Lennart Jakobsen


 Beskrivelse:   af  John W. M. Jagt 
This is a sturdily built Metopaster, with particularly long and wide supero- and inferomarginals. Unfortunately, ultimate superomarginals are not preserved (at least not in the portion exposed), but apparently there were rather small and few in number. Dissolution of calcite and subsequent casting with silicone rubber is called for to get a better idea of the ossicle morphology of this specimen, and thus to allow a more detailed assessment of its taxonomic placement.

More or less completely preserved asteroids are rare finds, esp. in the bryozoan chalk of Danian age in Denmark. Erratic flint boulders represent a special category of finds that can elucidate species' skeletal construction and thus help in identify dissociated ossicles found elsewhere. As such, I highly recommend this specimen to be declared danekrae.

REFERENCES
Gale, A.S., 1987. Goniasteridae (Asteroidea, Echinodermata) from the Late Cretaceous of north-west Europe. 2. The Genera Calliderma, Crateraster, Nymphaster and Chomataster. -- Mesozoic Research, 1: 151-186.

Gale, A.S., 1989. Migration and evolution in Late Cretaceous Goniasteridae (Asteroidea, Echinodermata) from north-west Europe. -- Proceedings of the Geologists' Association, 100: 281-291.

Jagt, J.W.M., 2000. Late Cretaceous-Early Palaeogene echinoderms and the K/T boundary in the southeast Netherlands and northeast Belgium - Part 5. Asteroids. -- Scripta Geologica, 121: 377-503.

 Note Pighud - søstjerne - Metopaster sp.

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