Horizon and locality: Coal formation at the South Joggins, Nova Scotia.
As compared with the H. lyelli the present species is smaller in size, more elongated in form, had the teeth less numerous (about 22 in the mandible), and shorter and more obtuse in form. There are 6 to 7 in I mm.
This species is much more rare than H. lyelli, but quantities of minute bones, probably belonging to it, occur in the coprolitic matter. In one specimen 38 vertebræ of this species were found partially associated, indicating along, slender body. The body is covered with scales and ventral scutellæ are present. Dawson questions whether this species may not be the young of H. lyelli.
MOODIE
Hylonomus latidens Dawson. Skull, portion of skeleton, foot, scapula, sternal bones, humerus, and rib, believed to belong to this species. Erect tree, Coal formation. Nova Scotia. Nearly natural size. Photograph by Dawson, published through the courtesy of Dr. Arthur Willey. Original in the Peter Redpath Museum of McGill University.
| mm. | |
| Length of skull | 8 |
| Length of mandible | 5 |
| Length of rib | 5.5 |
| Length of femur | 6 |
| Length of humerus | 5 |