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Show 660 DR. C. W. ANDREWS ON AN ICHTHYOSAURUS JAW. [June 19, 5° West longitude, a bird flew on board, and being absolutely exhausted was unresistingly picked up, and is alive and well up to date. " The strange thing about it is, that the point in question is about 400 miles from Ascension, 500 from St. Helena, 700 from the Gold Coast." The Secretary exhibited a cast of a portion of the jaw of an Ichthyosaurus (taken from a specimen obtained at Flinders Biver in Queensland) transmitted to the Society by Mr. J. Lane Huxley, of the Land's Department, Brisbane, Queensland, and read the following note upon it prepared by Dr. C. W . Andrews, F.Z.S.: - '; The specimen sent is a cast of a fragment of the snout of an Ichthyosaur related to Ichthyosaurus campylodon. Fragment of Jaw of Ichthyosaurus. Lower Cretaceous, Flinders River, Queensland. " It is probably referable to the species Ichthgosaurus australis, described by McCoy in ' Annals and Magazine of Natural History,' 1876, vols. xix. & xx., and tbe specimens noticed by him are from the same locality, viz. Flinders Biver, Queensland. The horizon from which they came is, as stated by McCoy, the Lower Cretaceous, although, for some reason or other, Moore states (see Quart. Journ. Geol. Soc. 1870) that McCoy regards it as Liassic. " Another species, Ichthyosaurus marathonensis, from the same horizon and a neighbouring locality, has been described by B. Ethe-ridge, Jun. (Proc. Linn. Soc. N. S. W . 1888, iii. [2]), but he admits that it is not improbably identical with Ichthgosaurus australis. Plesiosaurus is also recorded from the same horizon and locality. " In the present specimen the bases of about seven teeth in the upper jaw, and the crow-ns of four or five in the lower, are preserved on the right side; while on the left only traces of teeth are present. " The teeth appear to have tbe subquadrate base and coarsely ridged crown of the Campglodon group of Ichthgosaurus." |
