7. Tooth of Mastodonsaurus giganteus Jaeger, from the Triassic of Germany. Introduced for comparison with the tooth from the Kansas Carboniferous. × 1.
| Measurements of the Types of Ichthyerpeton squamosum Moodie. | |
| mm. | |
| Length of animal as estimated from two impressions | 3 ft. |
| Length of longest impression | 21 in. |
| Length of specimen containing tail impression | 9 in. |
| Width of tail impression: Maximum | 50 mm. |
| Minimum | 6 mm. |
| Width of a single scale | 1 mm. |
| Distance from base of tail to tip | 125 mm. |
| Length of specimen as preserved | 225 mm. |
| Width of chevron rod space | 30 mm. |
| Length of rib | 25 mm. |
| 8 chevrons in a distance of | 3 mm. |
Cope, Proc. Amer. Phil. Soc., 1885, p. 405.
Type: Cercariomorphus parvisquamis Cope.
The type specimen of this genus is supplemented by a portion of the body of another specimen which adds a little to our knowledge of the animal's form, but nothing as to structure. Cope's original description is as follows:
"Represented by a fusiform body which terminates in a long, slender, cylindrical tail, and which is covered with small subquadrate scales quincuncially arranged. No fins or limbs are preserved, and the form of the head can not be made out. Probably a portion of the skull is preserved. There are some scattered bodies in the body portion, which look like deeply concave vertebræ with the zygapophyses of batrachians. There are some linear impressions at one point, which resemble the bristle-like rods on many Stegocephali. They are so few as to be of little importance. The scales are like those of fishes. There are traces of segmentation in the axis of the long tail.
"The position of this curious form is quite uncertain. It is quite different from anything observed hitherto in the American Coal Measures."
Cercariomorphus parvisquamis Cope.