XXIV 
GLYPTOLAEMUS KINNAIRDI 
Memoirs of the Geological Survey of the United Kingdom. Figures and 
Descriptions illustrative of British Organic Remains. 1861, Decade X., 
pp. 41-46. 
PLATES I, AND II. [PLATES 33 AND 34]. 
(Genus GLYPTOL-EMUS. Huxtey. (Sub-kingdom Vertebrata. Class Pisces. 
Order Ganoidei. Suborder Crossopterygide. Family Glyptodipterini.) Body elongated, 
tapering to a point posteriorly, Cranium depressed. Dorsal fins, two, distinct, situated in 
the posterior two-fifths of the length of the body. Ventral fins under the first dorsal, and like 
the pectorals lobate. The rhomboid scales and the cranial and facial bones ornamented with 
raised ridges. Teeth of two sizes, composed of (probably) dendrodentine. Tail diphy- 
cercal.] 
Glyptolemus Kinnaird’. Sp, UNICA. 
SPECIMENS of this genus were first described, and their distinctive 
characters pointed out by me, in a notice inserted in Dr. Anderson’s 
work upon “ Dura Den,” which was accompanied by excellent, though 
small, illustrative figures, drawn by Mr. Dinkel. 
Since 1859, thanks to Dr. Anderson’s zeal and activity, a number 
of additional specimens, several of great beauty and interest, have 
passed into the collection of the Museum of Practical Geology, so that 
I am now in a position to give a tolerably complete account of the 
structure of these ancient fishes. The singularly beautiful and accurate 
figures in Plates I. and II. [Plates 33 and 34] will enable the reader, 
step by step, to verify for himself the most important points of my 
description. 
The body is, as I have said, elongated, and when viewed side-ways, 
fusiform, tapering to a point at each extremity (Plate I. [Plate 33] fig. 1) 
but when viewed from above or below, though the caudal extremity 
is still seen to end in a point, the anterior part of the body rapidly 
widens (Plate I. [Plate 33] fig. 3), and ends in a depressed, broad, and 
shovel-shaped head, with a semi-elliptical contour, rounded at the snout. 
The length of the whole body is about four and a half times as 
