"This was an unusual type of discovery, " admitted Paul Morgan, the South East England and Europe director for the British Border Force.

BBC: Dog sniffs out illegal immigrants' coffin ruse

He admits that he was surprised by both the large number and unusual type of companies interested in the budding race league.

FORBES: Could Formula Racing Really Go Electric? We're About To Find Out

When the grueling 2013 Rolex 24 endurance race kicks off at Daytona International Speedway on Jan. 26, the field will include three Mazda6 race cars powered by an unusual type of renewable fuel.

FORBES: Mazda's Newest Race Cars Are Powered By Chicken Guts

But this type of compensation scheme for employees is unusual.

FORBES: Hire now, pay later

The type of resistance that Tamim Iqbal provides is unusual because he bats so positively.

BBC: Jonathan Agnew column

We tend not to see many of this type of Roman silver coins, so to have 59 is really quite unusual.

BBC: Roman gold coin revealed in 'lucky' Norfolk treasure find

In an unusual conference call with Apple investors on Thursday, Mr. Einhorn called on the technology company to issue a new type of preferred stock as a way of returning cash to yield-hungry investors.

WSJ: Judge Grants David Einhorn's Bid To Block Apple Proxy Vote