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Katalognummer:
599
Accessionsnummer:
DK 670
Samling:
Danekræsamlingen
Samler:
Statens Naturhistorisk Museum
Finder:
Mette Hofstedt
Bestemt af:
Gilles Cuny
Lokalitet:
Trelde Næs, Fredericia
Stratigrafi:
Periode:
Silur
Type:
Sediment:

Billede

Foto ©: Sten Lennart Jakobsen


 Beskrivelse:   af  Gilles Cuny 
Acanthodian spine from the ?Silurian of Denmark

The present specimen consists of the distal half of a climatiid pectoral spine (see the statement below from Carole Burrow). It was found in an erratic block from Trelde Næs, on the southeast coast of Jutland. The block is probably Silurian in age. Although not unknown from outside Denmark, the peculiar ornamentation pattern of this spine, made of both costae and tubercles, is unknown from our collection at the Natural History Museum in Copenhagen. Moreover, as stated by Carole below, such ornamentation pattern has not been well figured in scientific paper in the past, and it is important that the Danish collection retains such an example.

Carole Burrow:
It's definitely acanthodian {if we're still 'allowed' to call climatiids acanthodians!). I have attached images of a couple of pectoral fin spines on articulated LORS {lochkovian) Climatius reticulatus specimens, so you can see that the distal half of these spines looks very similar to your Danish one {which I think is also the distal half of a spine). I would say that it is not an uncommon ornament combination on climatiid pectoral spines {e.g. probably also in Sabrinacanthus, see Miles 1973, pl. 17.2, & Ptomacanthus sp. indet. 1 in Miles 1973, text-fig 31), but it hasn't been figured well to date in institutional specimens {the attached images are of specimens still in private collections). A revision of Climatius reticulatus is in the pipeline for our LORS group.


 Note Fisk - Acanthode

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