1 edition of Articulated acanthodian fishes from the Old Red Sandstone of England found in the catalog.
Bibliography: p. 208-211.
|Statement||British Museum (Natural History)|
|Publishers||British Museum (Natural History)|
|The Physical Object|
|Pagination||xvi, 51 p. :|
|Number of Pages||42|
|2||v. 24, no. 2|
|3||Bulletin of the British Museum (Natural History).|
nodata File Size: 3MB.
And such was the Cephalaspis of the Cornstones, not only the most characteristic, but in England and Wales almost the sole organism of the Articulated acanthodian fishes from the Old Red Sandstone of England. I had a sneaking suspicion that the acid could dehydrate it further, then dissolve the remaining apatite, but I wasn't sure Ph.
Edited February 21, 2016 by Coelacanth Oops, misremembered the molar mass of Hydrochloric acid - 36. They are identical with those of the Den at 1 These fossils ,—Parka decipiens ,—now known to be the seeds of a plant, are abundant in the Kidderminster beds. These nodules, when cut up and polished, present very agreeable combinations of colour: there is generally an outer ring of reddish brown, an inner ring of pale yellow, and a central patch of red ; and the whole is prettily veined with dark-coloured carbonate of lime.
The crustaceans of the upper Silurian of Les- mahagow, too, seem certainly much akin to those of the Forfarshire tilestones. Imagine, however, a webbed foot in which the toes, connected but not covered, present, as in skeletons, an upper and under surface of naked bone, and a very correct idea may be formed, from such a foot, of the condition of fin which obtained among at least one-half the ichthyolites of the Lower Old Red Sandstone.
To account for these strange foldings, Sir James, in his paper in the Transactions of the Royal Society of Edinburgh, on the Vertical Position and Convolutions of certain Strata, and their Relations with Granite, broached that theory of lateral pressure applied by some unknown force outside the area of the foldings themselves, which is still regarded as the best yet originated on the subject; and illustrated it by his famous experiments of the bands of variously- tinted clays, and the layers of differently-coloured cloths, which he succeeded in pressing, by the application of lateral force, from a horizontal into a convoluted position.
From the latter ichthyolite it differed chiefly in the position of its fins, which were opposite, not alternate,—the double dorsals exactly fronting the anal and ventral fins. In their most striking characteristics, however, the three genera seem to have nearly agreed. From its impervious character, too, it has the effect of rendering the surface a bog for one-half the year, and an arid, sun-baked waste for the other.
Still, however, I saw enough to exhilarate and interest; I wrought on till the advancing tide came splashing over the nodules, and a powerful August sun had risen towards the middle sky; and, were I to sum up all my happier hours, the hour would not be forgotten in which I sat down on a rounded boulder of granite by the edge of the sea, when the last bed was covered, and spread out on the beach before me the spoils of the morning.
I saw, with one of the workmen, what seemed to have been the continuous tail-flap of an individual of very considerable size. It is right, however, to add, that up to a very recent period, Mr. I had the pleasure of first introducing him to the ichthyolites of the Lower Old Red Sandstone, by bringing him to my first-discovered bed, and laying open, by a blow of the hammer, a beautiful Osteolepis.
They have turned out, as was anticipated, to be the detached plates of some such crustacean as the lobster of Balruddery. I have now to refer to but two other papers on our Scotch Grauwacke. We pass to the upper formation of the system.
The above engraving is from a specimen in the private collection of Lord Kinnaird, at Rossie Priory. It occurs neither in Orkney nor Cromarty, Caithness nor Gamrie, Nairnshire nor the inferior ichthyolite beds of Moray. I still pursued my inquiries, and received a valuable auxiliary in a gentleman from India, Dr.
The granitic wedges have not only uptilted the sandstone, but they have also upheaved the superincumbent Lias, which, but for their agency, would have remained buried under the waters of the Frith, and its ever-accumulating banks of sand and gravel.
I am not talking about hydroxylapatite, I am speaking of dehydrated hydroxylapatite with the chemical formula [Ca 10 PO 4 6 OH ].
macrolepidotus; whereas four species of Diplopterus have been enumerated,— D.
Edited February 21, 2016 by Coelacanth How to prep fossils from Orkney is not really my area of expertise, but this must be a calculation error - 10.