JOURNAL 
OF THE 
ROYAL MICROSCOPICAL SOCIETY. 
NOVEMBER, 1878. 
I. — On the Fossils called Granicones'^ ; being a Contribution to 
the Histology of the Exo-sheleton in BeptiliaJ' 
By Professor Owen, C.B., F.R.S., F.R.M.S., &c. 
{Bead before the Royal Microscopical Society, October 9, 1878.) 
Plates XII. and XIII. 
The British Museum lately acquired, by purchase, the collection 
of fossils made by Samuel H. Beckles, Esq., F.R.S , F.Gr.S., in the 
‘‘ Feather-Bed Stratum,” Middle Purhecks, Dorsetshire. 
The mammalian remains had previously been submitted to me 
by their discoverer for determination and description, and they 
form the subject of the preliminary chapter of my work on ‘ Marsu- 
pial Fossils.’ * 
In working out the residuary slabs and pieces of matrix from 
the above-named formation, some interesting additional evidences 
of the Reptilia of the period were brought to light, and among 
them the bodies figured in Plate XII., Figs. 1~5, natural size, to 
EXPLANATION OF THE PLATES. 
Plate XII. 
Figs. 1-3. — Granicones of the larger size. 
Fig. 4. — A granicone showing an oblique base. 
„ 5. — „ with a beaded border at the base, the apex broken off. 
„ 6. — Transverse section of a granicone; nat. size in outline, and magnified 
2 diameters. 
„• 7. — The portion indicated by the circular line in Fig. 6 ; magnified about 
8 diameters. 
„ 8. — Portion of jaw and teeth in situ, Nuthetes desh'uctor ; nat. size. 
„ 9. — Detached teeth of the same species ; nat. size. 
„ 10. — Portion of section of a granicone ; magnified about 333 diameters. 
Plate XIII. 
Fig. 1. — Outline of a scute of Theriosuchus pusiilus ; nat. size. 
„ 2. — Two scutes of do. ; magnified 2 diameters. 
„ 3. — A section of scute ; magnified about 33 diameters. 
„ 4. — A section of scute ; magnified about 333 diameters. 
* ‘ Researches on the Fossil Remains of the Extinct Mammals of Australia, 
v/ith a Notice of the Extinct Marsupials of England,’ 4to, 1877, vol. i. pp. 21-104. 
VOL. I. S 
