But it is not that the auditory system has disappeared, the researchers say in a paper in Biology Letters.

The findings were published last week in Biology Letters.

Dunkleosteus was the most powerful of any fish, living or extinct, they report in Biology Letters.

The study was published online May 9 in Biology Letters.

The findings were published online in Biology Letters.

They could do this, the researchers suggest in a paper in Biology Letters, by using polarized light.

Biology Letters, published online on June 10, 2009.

Their findings, reported in Biology Letters, show that strandings peak every 11 to 13 years.

As reported in the journal Biology Letters, they found that breathing rate increased with smaller schools.

As reported in the journal Biology Letters, they found that the birds flew only for about 10 minutes per day.