| Next in point of altitude, is the series of dark, carbonaceous, shelly slate rock. |
| This type of testing does not identify small sub-surface cracks emanating from the shelly damage. |
| Most animals, including all the shelly Cambrian ones, grow from three-layered embryos. |
| The rail fractured as a result of the downward progression of microcracks emanating from shelly damage. |
| The trilobite eye is in continuity with the rest of its shelly armor. |
| The overlying limestones and tuffs were deposited in shallow water as indicated by the rich shelly fauna. |
