Abstract
In the year 1876, Prof. H. G. Seeley published in the Journal of this Society a short account of a small Zeuglodon from the Barton Clay of Barton Cliff. This specimen, which was made the type of the species Zeuglodon Wanklyni, was discovered in 1872 and came into the possession of Dr. Arthur Wanklyn, by whom Prof. Seeley was requested to draw up some notes on this important find. Fortunately he did so, for at Dr. Wanklyn's death all trace of the specimen was lost, and it was no doubt on this account that the notes had to be published without illustrations. In 1881, Prof. J. W.,Iudd 2 gave an account of the discovery of a cetacean vertebra in the Brockenhurst Beds of Roydon (Hampshire) : this specimen was described by Prof. Seeley under the name Balænoptera Juddi , but he now, no doubt rightly, regards it as belonging to a Zeuglodon . Until quite lately no further remains of Zeuglodonts had been found in Britain, but some months ago Mr. H Eliot-Walton, who has done much collecting in the Hampshire cliffs, found a cervical vertebra of Zeuglodon , and it is to this specimen that the present note refers. The vertebra is a posterior cervical, probably the sixth. The centrum is roughly oval in outline, its greatest width, which is situated nearer the ventral than the dorsal surface, being greater than the height. The anterior face is almost flat, with a median depression, and marked by irregular ridges

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