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pro vyhledávání: '"681"'
Autor:
F. L. Kitchin
Publikováno v:
Geological Magazine. 70:378-381
A new ammonite from the Penarth Group, South Wales and the base of the Jurassic System in SW Britain
Autor:
Peter Hodges
Publikováno v:
Geological Magazine. 158:1109-1114
Two ammonites have been found in porcelaneous limestones of the White Lias Formation traditionally considered to be of Rhaetian (Late Triassic) age at Lavernock Point, south Wales (ST 181 681). These ammonites, named here Neophyllites lavernockensis.
Autor:
F. A. Bather
Publikováno v:
Geological Magazine. 3:71-75
In June, 1895, Mr. G. H. Morton, F.G.S., of Liverpool, submitted to me three specimens of Crinoidea, registered No. 681 in his collection. One of these specimens was a stem-fragment, impossible to determine; but the other two appeared of such interes
Autor:
W. Whitaker
Publikováno v:
Geological Magazine. 2:360-366
Over the area in question the total thickness of the Chalk (where it can be measured from top to bottom, or nearly so) varies from 623 feet at Streatham to 1146 feet at Norwich, and in the latter case the topmost beds are absent; so that the full thi