The Triassic Period. At the start of the Triassic period, 250 million years ago, the earth was just recovering from the Permian/Triassic Extinction, which witnessed the demise of over two-thirds of all land-dwelling species and a whopping 95 percent of ocean-dwelling species.
Causes. Pertussis, a respiratory illness commonly known as whooping cough, is a very contagious disease caused by a type of bacteria called Bordetella pertussis.These bacteria attach to the cilia (tiny, hair-like extensions) that line part of the upper respiratory system.auses. Pertussis, a respiratory illness commonly known as whooping cough, is a very contagious disease caused by a type of bacteria called Bordetella pertussis.
No, it is not caused by a virus. It is a bacterial infection cased  by Bordetella Pertussis and gives rise to bouts of coughing spell. No, the disease commonly known as whoop â¦ ing cough is caused by Bordetella Pertussis, a type of bacteria.This is not a viral illness.hooping cough(or pertussis) is caused by a bacteria called Bordetella pertussis. When an infected person coughes or sneezes, the bacteria moves through the air. This is the r â¦ eason Pertussis is an extremely contagious disease. + 28 others found this useful.