1.   Instead a crack split the segments on the trilobite thorax, and the trilobite then wriggled out as best it could, sometimes getting entangled in the process.

2.   Three-inch-wide cracks split streets, and fallen electric poles block them.

3.   The rock foundation had worn away and cracks had split all four main walls.

4.   There were more intensive bursts of firing, when the crack of shells split the air every few seconds.