Undichna britannica

Taxobox
color = #e0d0b0
name = "Undichna britannica"


image_width = 240px
image_caption =
fossil_range = Silurian – ?
regnum = Animalia
phylum = Chordata
subphylum = Vertebrata
infraphylum = Gnathostomata
genus = "Undichna"
(Ichnogenus)
species = "Undichna britannica"
(Ichnospecies)
binomial = "Undichna britannica"
binomial_authority = Higgs

"Undichna britannica" is a fish-fin, or fish-swimming fossil trackway left as a fossil impression on a substrate; this type of fossil is an ichnofossil, and in this case an ichnospecies.

The "U. britannica" fish-fin tracks, or trackways are often associated with current or wave ripple marks, probably shallow water, near-shoreline. Other deep water varieties may be less common, or associated with narrowed current flow between obstructions. The sinusoidal high points of the ripple marks may lend itself to the formation of the trackways.

ee also

*Trace fossil
*Fossil trackway

External links

* [http://www.newhay.ukfossils.co.uk/finds/DSCF0037.jpgPhoto-High Res--Ripple marks and "U. brittanica" traces] ; [http://www.newhay.ukfossils.co.uk/finds/DSCF0036.jpgPhoto-(no. 2 of 2)] ; [http://www.newhay.ukfossils.co.uk/Newhay-Fossils-Geology/fossil-photos.htm Article] – newhay.ukfossils.co.uk-"Newhay Quarry"-"Lancashire"
* [http://www.kgs.ku.edu/Current/1998/buatois/GIFS/Fig24.gifPhoto-(non-ripple mark associated)] ; [http://www.kgs.ku.edu/Current/1998/buatois/fig24.html Article] – (kgs.ku.edu) - "Kansas Geological Survey"