Abstract
PARTS 1 to 3 of this Catalogue by Foord and Crick, dealing with the Nautiloids and Palaeozoic Am-monoids, were published in 1887, 1891 and 1897 respectively. The new part, although of larger size, includes only about half of the Triassic Ammonoids, namely, the Pronoritida, Xenodiscida, Meekoceratida, and part of the Ceratitida, nearly all occurring in the Lower and Middle Trias. The remaining groups, of Middle and Upper Triassic age, will be dealt with in the succeeding volume. Since the last part was published, our knowledge of Palaeozoic Ammonoids has increased considerably, so that the author can now affirm that true Ammonites were already prolific in the Upper Palaeozoic, and that the Permian System, contrary to the views of some British geologists, has fully justified its existence.
Catalogue of the Fossil Cephalopoda in the British Museum (Natural History)
Part 4: The Ammonoidea of the Trias. By Dr. L. F. Spath. Pp. xvi + 521 + 18 plates. (London: British Museum (Natural History), 1934.) n.p.
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Catalogue of the Fossil Cephalopoda in the British Museum (Natural History). Nature 136, 778 (1935). https://doi.org/10.1038/136778a0
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DOI: https://doi.org/10.1038/136778a0