Saturday, 15 November 2008
Tuesday, 17 June 2008
The artwork was first completed on a computer and the printout was reduced by photography with a 35mm camera using litho-film. The 19mm round film was gummed to a slide using uv cured glass bond after treatment . The coverslip was also stuck with glass bond.
The main species are included from the harbours` southern shore.
Friday, 18 April 2008
This photo shows the shallowness of this part of the fleet. The image was taken at low tide.
Please click on the image for a larger version. The Light coloured deposits can be seen on the aerial maps of the area as seen on the web. Live Maps may be used by either searching or clicking. See link below.
The red dots outline the very rich and extensive deposition sites. The species found are very similar to those of the estuarine sites of Dorset like Poole Harbour, but the arenaceous types are less numerous than at Poole.
The Village of East Fleet with its literary connections and ancient churches is an enchanting place. There are fossil types here but floatation has been used to reject them.
This is a photo of the water surface during the last stage of floatation, using material from East Fleet. It is a rich collection.
Friday, 11 April 2008
Monday, 7 April 2008
Saturday, 5 April 2008
In the open sea, the deposition sites in sheltered bays are pretty obvious ( see early blogs)but within the estuarine conditions of Poole Harbour do these exist? These gastropod shells seem to collect along with shelly mud in the middle tide marks of the harbour and the sievings (0.1mm-0.9mm)from this material are quite rich in arenaceous as well as other foraminifera. I have washed and sieved out the shells so that identification is possible. They are somewhat larger than 10mm. Click on the image for an enlarged version.
Thursday, 20 March 2008
After really long term searching I am more certain that species, which consistently turns up daily in floatings from
Swanage is part of our recent foram fauna of the Dorset Coast.
It is not listed by Murray in his 1971 Atlas nor by J.R. Haynes in his 1973 work on Cardigan Bay. The identification came
from the Robert Wynn-Jones Brady Plates revival of 1994 where there is an original image from the Brady Books on Plate 75 fig 21a &b and 22. There is no mention of the British Channel but later I found it in Cushmans Atlantic 1923 at least. Plate 42 fig14. Its a very poor drawing indeed but his text is helpful.
Generic Synonyms from Cushman.
Uvigerina, several refs to Sagrina as well as 3 references to Siphogenerina.
Up to 1mm long. ---It begins life as a biserial test but half way becomes mono.-The costae are continuous not being broken at the sutures. There is a description of the flaring lip which I would call slightly reflexed. It is certainly distinctive enough not to be confused by S dimorpha although this near species has been recorded in the British Isles and Norway in a very positive manner.