ORIGINAL ARTICLES. 
—-4-—_— 
I. DESCRIPTION OF SOME REMAINS OF AN AIR-BREATHING VERTE- 
BRATE (ANTHRAKERPETON CRASSOSTEUM, Ow.) FROM THE CoOAL- 
SHALE OF GLAMORGANSHIRE. 
By Prof. Owsn, F.RB.S., &e. 
QIN CE the discovery of remains of air-breathing Vertebrates 
in the Coal-shales of Carluke,* several other evidences of 
a like grade of organization have been obtained from Scotch 
Carboniferous deposits ; but I had not, until the present year, 
seen any such fossils from English or Welsh formations of the 
same antiquity. The specimens figured in Plate I., however, 
give evidence of the fact. They were , discovered by J ohn Edward 
Lee, Esq., F.G.S., in the much disturbed coal-beds at Llan- 
trissent, Glamorganshire, which are referable to the lower part 
of the ‘ Middle,’ if not to the upper part of the ‘ Lower,’ Coal- 
measures. 
The specimens include an impression of part of the integument, 
with a few of the scutules, Pl. I. fig. 1; portions of long, slender, 
curved bones like ribs, fig. 2; part of the roof of the cranium, 
associated with a long, nearly straight, slender bone, and part of a 
similar bone, slightly bent, figs. 8 & 4; portions of two straight 
slender bones, fig. 5; portion of a symmetrical bone, probably from 
the naso-palatine chamber of the skull, fig. 6; portions of ribs, fig. 7; 
. ; parts near the articular ends of 
bones, figs. 8 & 9. There is, also, 
(®) what seems to be the base of a 
tooth, anchylosed to a rough rising 
-> of bone, according to the ‘acrodont’ 
Fig. 1. a, Base of tooth, anchylosed to alveo- type, broken away from the alveo- 
lar process; 0, c, magnified. co 
lar border of a jaw, ewt, fig. 1, a, b. 
The base of the tooth, fig. 1, ec, has a full oval, almost circular, trans- 
verse section, exposing a pulp-cavity, the diameter of which is half 
that of the fractured part of the tooth, surrounded by dense dentine, 
with a glossy fracture, without any distinct outer enamel or layer of 
other substance: there is no trace of linear impressions on its exterior, 
although the part preserved corresponds to the beginning of the base 
of the tooth, where the inflections of the cement, which give rise to 
the converging lines or labyrinthic windings, are seen in the teeth of 
some Labyrinthodonts, in which the upper two-thirds or half of the 
crown of the tooth may be entire. 
The portion of cranial bone is impressed with small circular pits 
which, toward one side of the bone, elongate and run into wavy grooves, 
* Parabatrachus Colei, Owen; ‘Quart. Journ. Geological Society,’ 1858, vol. xi., 
p. 67, pl. 2, fig. 1. ; 
