Abstract
ALL who are interested in the invertebrata of the Trias will be pleased to see the supplement recently issued to “Die Cephalopoden der Hallstætter Kalke,”by Dr. Edmund Mojsisovics (Abhandlungen der k.k. Geologischen Reichsanstalt, Band vi., 1902). The first volume of this detailed and beautifully illustrated memoir, published in 1873 and 1875, contained 174 pages of text and 70 finely executed lithographic plates. The second volume appeared in 1893, and extended to 835 pages and 130 plates. The part now published is a supplement to the first volume, and continues the paging from 175 to 356, while the plates are numbered from 1 to 23 as supplementary. It is somewhat difficult for geologists familiar only with the English Trias to realise the richness of the fauna described in this memoir, which, for the sufficient illustration of the Cephalopoda alone, needs 223 large quarto plates. The author speaks In the preface of the somewhat primitive nomenclature of the earlier parts of the first volume, but the most forward student will have nothing to complain of in this direction in the present supplement, unless it be the use of such impossible names as Pompeckjites. Some interesting remarks are made on the subdivisions now adopted for the “Hallstatter Kalke,”and a table of these is given on p. 345. Among the forms of Cephalopods here described, none perhaps are more remarkable than the primitive types included in the Belemnitidæ. In transitional deposits such as the Trias one expects to find the lingering of antique forms and the foreshadowing of types yet to come; but it is a little startling to find the Carboniferous genus Pleuronautilus so nearly associated with such forms as Rhaco-phyllites, which so strongly reminds us of the Liassic Phylloceras heterophyllus. The author is to be congratulated on the successful completion of this monumental work, which has engaged his attention for so many years, and, by this supplement, is brought fully abreast of the present time.
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Triassic Cephalopods . Nature 68, 115 (1903). https://doi.org/10.1038/068115a0
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DOI: https://doi.org/10.1038/068115a0