GLYPTODONTIDE 203 
species are of medium size. Part of a caudal tube from Uruguay 
described as Eleutherocercus indicates, however, a much larger allied 
form, in which the tail appears to have had a number of stout bristles 
protruding from the joints between the scutes. Panochthus com- 
prises very large Glyptodonts, distinguished by the great thickness 
of the scutes of the carapace, which are ornamented with tubercles. 
The termination of the caudal sheath forms a tube bearing large 
radiated tubercles. Euryurus is distinguished by the radiate 
sculpture of the scutes of the carapace. Dedicurus, of which one 
species was about twelve feet in length, also has a rugose 
sculpture on the carapace ; but the termination of the caudal tube is 
expanded into a club-like shape, flattened from above downwards, 
ISCO OS, 
Fic. 69.—Glyptodon clavipes (Pleistocene, South America). From Owen. The tail is incorrectly 
restored, and it is probable that the figured portion belongs to Hoplophorus. The left lower 
corner shows an upper and a lower view of the skull, and the right a section of the caudal 
sheath. 
and covered with tubercles mingled with a few large radiate discs, 
which, as in Panoehthus, probably carried horny spines in the living 
condition. The typical genus Glyptwlon has each scute of the 
carapace ornamented with a rosette-like sculpture, the peripheral 
scutes being raised into conical prominences (Fig. 69). The caudal 
sheath, instead of being like the one represented in the figure, was 
entirely composed of a series of movable rings, ornamented with 
large tubercles. The manus had five digits, and the pes four; and 
there was an entepicondylar foramen to the humerus. A species of 
this genus, which attained very large dimensions, was made the 
type of Schistopleurum, on the supposition that the tail of Glyptodon 
was of the type represented in Fig. 69. The genus Thvracophorus, 
